/* ==========================================
   CompTIA Security+ Study Platform - Styles
   ========================================== */

/* CSS Variables - Blue Theme */
:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #38bdf8;
    --secondary: #06b6d4;
    --secondary-dark: #0891b2;
    --danger: #ef4444;
    --warning: #f59e0b;
    --success: #22c55e;

    --bg-dark: #0a1628;
    --bg-card: #0f2847;
    --bg-card-hover: #1e3a5f;
    --bg-sidebar: #0c1e36;

    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-reading: #e2e8f0;

    --border-color: #1e4976;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.35);
    --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.4);

    --transition: all 0.3s ease;

    --sidebar-width: 280px;
}

/* Reset */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Base */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* ==========================================
   Top Navigation Bar
   ========================================== */
.top-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(90deg, var(--bg-sidebar) 0%, #0c4a6e 50%, #082f49 100%);
    display: flex;
    align-items: center;
    padding: 0 24px;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    gap: 24px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    background: none;
    border: none;
    cursor: pointer;
}

.navbar-brand .logo-icon {
    font-size: 1.8rem;
}

.navbar-brand .logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(135deg, #fff 0%, #38bdf8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.navbar-brand .version-badge {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.navbar-nav {
    display: flex;
    gap: 8px;
    flex: 1;
    justify-content: center;
}

.navbar-nav .nav-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid transparent;
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.navbar-nav .nav-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateY(-2px);
}

.navbar-nav .nav-btn.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.4);
}

.navbar-nav .nav-icon {
    font-size: 1.1rem;
}

.navbar-search {
    position: relative;
    flex-shrink: 0;
    width: 250px;
}

.navbar-search #global-search {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 8px 14px;
    border-radius: 20px;
    color: #fff;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.navbar-search #global-search:focus {
    background: rgba(0, 0, 0, 0.5);
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}

.navbar-search .search-results-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 1001;
    max-height: 300px;
    overflow-y: auto;
    display: none;
}

.navbar-search .search-results-dropdown.active {
    display: block;
}

/* App Container */
.app-container {
    display: flex;
    min-height: 100vh;
    padding-top: 60px;
    /* Compensar altura del navbar */
}

/* ==========================================
   Sidebar (Solo Lecciones)
   ========================================== */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--bg-sidebar) 0%, #082f49 100%);
    padding: 20px;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px;
    /* Debajo del navbar */
    left: 0;
    height: calc(100vh - 60px);
    /* Restar altura del navbar */
    overflow-y: auto;
    z-index: 100;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 2rem;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, #fff 0%, #7dd3fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.version-badge {
    background: rgba(14, 165, 233, 0.3);
    color: var(--primary-light);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Main Navigation */
.main-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 32px;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: transparent;
    border: none;
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.nav-btn.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-glow);
}

.nav-icon {
    font-size: 1.25rem;
}

/* Lesson Selector */
.lesson-selector {
    flex: 1;
    margin-bottom: 24px;
}

.lesson-selector h3 {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.lesson-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.lesson-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.85rem;
}

.lesson-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.lesson-item.active {
    background: rgba(14, 165, 233, 0.2);
    border-left: 3px solid var(--primary);
}

.lesson-item.completed {
    opacity: 0.8;
}

.lesson-item .lesson-icon {
    font-size: 1.1rem;
}

.lesson-item .lesson-status {
    margin-left: auto;
    font-size: 0.9rem;
}

/* Sidebar Footer */
.sidebar-footer {
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.progress-summary {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.mini-progress {
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.mini-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    transition: width 0.5s ease;
}

.backup-controls {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.backup-controls .icon-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    font-size: 1.1rem;
}

.backup-controls .icon-btn:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

/* ==========================================
   Main Content
   ========================================== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 32px;
    min-height: 100vh;
}

.view {
    display: none;
    animation: fadeIn 0.3s ease;
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.view-header {
    margin-bottom: 32px;
}

.view-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.view-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ==========================================
   Dashboard
   ========================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.stat-icon {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Dashboard Sections */
.dashboard-sections {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.quick-actions,
.recent-activity {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    border: 1px solid var(--border-color);
}

.quick-actions h2,
.recent-activity h2 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px;
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid rgba(14, 165, 233, 0.2);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.85rem;
    text-align: center;
}

.action-btn:hover {
    background: rgba(14, 165, 233, 0.2);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.action-icon {
    font-size: 1.5rem;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius-sm);
}

.no-activity {
    color: var(--text-muted);
    text-align: center;
    padding: 20px;
}

/* ==========================================
   Dashboard Hero Section
   ========================================== */
.dashboard-hero {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 40px;
    align-items: center;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.15) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: var(--border-radius-lg);
    padding: 32px 40px;
    margin-bottom: 32px;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.hero-welcome h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #fff 0%, #38bdf8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-welcome p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 8px;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 30px;
}

.progress-circle-container {
    width: 120px;
    height: 120px;
}

.circular-chart {
    display: block;
    max-width: 100%;
    max-height: 100%;
}

.circle-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.1);
    stroke-width: 3;
}

.circle {
    fill: none;
    stroke: var(--primary);
    stroke-width: 3;
    stroke-linecap: round;
    transition: stroke-dasharray 0.5s ease;
}

.percentage {
    fill: #fff;
    font-size: 0.5rem;
    font-weight: 700;
    text-anchor: middle;
}

.mini-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.mini-stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.mini-stat-val {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-light);
}

.mini-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================
   Badges / Achievements Section
   ========================================== */
.badges-section {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.badges-section h2 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.badges-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.badge-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 2px solid transparent;
    opacity: 0.4;
    filter: grayscale(100%);
    transition: all 0.3s ease;
    position: relative;
    cursor: default;
}

.badge-item.unlocked {
    opacity: 1;
    filter: none;
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
    box-shadow: 0 0 20px rgba(14, 165, 233, 0.3);
}

.badge-item .badge-icon {
    font-size: 1.8rem;
}

.badge-item .badge-tooltip {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-card);
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    border: 1px solid var(--border-color);
    z-index: 10;
}

.badge-item:hover .badge-tooltip {
    opacity: 1;
}

/* ==========================================
   Study Path Hero - ELEMENTO CENTRAL Y PRIMORDIAL
   ========================================== */
.study-path-hero {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.12) 0%, rgba(139, 92, 246, 0.08) 50%, rgba(6, 182, 212, 0.1) 100%);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    margin-bottom: 24px;
    border: 2px solid rgba(14, 165, 233, 0.3);
    box-shadow: 0 8px 40px rgba(14, 165, 233, 0.15), inset 0 0 60px rgba(14, 165, 233, 0.03);
    position: relative;
    overflow: hidden;
}

.study-path-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(14, 165, 233, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.study-path-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 20px;
    position: relative;
    z-index: 1;
}

.study-path-title h2 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #fff 0%, #38bdf8 50%, #06b6d4 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.5px;
}

.study-path-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.5;
}

.study-path-global-progress {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.global-progress-circle {
    width: 100px;
    height: 100px;
}

.circular-chart-lg {
    display: block;
    width: 100%;
    height: 100%;
}

.circular-chart-lg .circle-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.1);
    stroke-width: 3;
}

.circular-chart-lg .path-progress {
    fill: none;
    stroke: url(#pathGradient);
    stroke-width: 3;
    stroke-linecap: round;
    transition: stroke-dasharray 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    stroke: #22c55e;
}

.circular-chart-lg .percentage {
    fill: #fff;
    font-size: 0.5rem;
    font-weight: 700;
    text-anchor: middle;
}

.global-progress-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

/* Legacy study-path class for backwards compatibility */
.study-path {
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(15, 40, 71, 0.95) 100%);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    margin-top: 24px;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.study-path h2 {
    font-size: 1.5rem;
    margin-bottom: 28px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* ==========================================
   Exam Readiness Panel - Premium Design
   ========================================== */
.exam-readiness-panel {
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(15, 40, 71, 0.95) 100%);
    border-radius: var(--border-radius-lg);
    padding: 28px;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.readiness-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 16px;
}

.readiness-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.readiness-score-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 20px;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.2) 0%, rgba(16, 185, 129, 0.15) 100%);
    border-radius: 12px;
    border: 1px solid rgba(34, 197, 94, 0.4);
}

.readiness-score-badge.low {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2) 0%, rgba(220, 38, 38, 0.15) 100%);
    border-color: rgba(239, 68, 68, 0.4);
}

.readiness-score-badge.medium {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(217, 119, 6, 0.15) 100%);
    border-color: rgba(245, 158, 11, 0.4);
}

.readiness-score {
    font-size: 1.75rem;
    font-weight: 800;
    color: #22c55e;
}

.readiness-score-badge.low .readiness-score {
    color: #ef4444;
}

.readiness-score-badge.medium .readiness-score {
    color: #f59e0b;
}

.readiness-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.readiness-status {
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    border-left: 3px solid var(--primary);
}

.readiness-status.ready {
    border-left-color: #22c55e;
    background: rgba(34, 197, 94, 0.08);
}

.readiness-status.not-ready {
    border-left-color: #f59e0b;
    background: rgba(245, 158, 11, 0.08);
}

.domains-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.domain-item {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all 0.3s ease;
}

.domain-item:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-2px);
}

.domain-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.domain-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.domain-icon {
    font-size: 1.5rem;
}

.domain-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.domain-weight {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.08);
    padding: 4px 8px;
    border-radius: 4px;
}

.domain-progress-bar {
    height: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 8px;
}

.domain-progress-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 10px currentColor;
}

.domain-progress-text {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.domain-score {
    font-weight: 700;
}

.readiness-recommendations {
    background: rgba(14, 165, 233, 0.08);
    border-radius: 10px;
    padding: 16px;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.readiness-recommendations h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.recommendation-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.recommendation-item:hover {
    background: rgba(14, 165, 233, 0.15);
}

.recommendation-item:last-child {
    margin-bottom: 0;
}

.recommendation-icon {
    font-size: 1.25rem;
}

.recommendation-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.recommendation-priority {
    margin-left: auto;
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
}

.recommendation-priority.high {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.recommendation-priority.medium {
    background: rgba(245, 158, 11, 0.2);
    color: #f59e0b;
}

.recommendation-priority.low {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.roadmap-timeline {
    display: flex;
    flex-direction: column;
    gap: 28px;
    position: relative;
}

/* Línea conectora vertical decorativa - DESHABILITADA */
/* Se eliminó porque quedaba mal visualmente detrás de las fases */

.phase {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.08) 0%, rgba(6, 182, 212, 0.05) 100%);
    border-radius: 16px;
    padding: 24px;
    border-left: 5px solid var(--primary);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 1;
    backdrop-filter: blur(4px);
}

.phase:hover {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.12) 0%, rgba(6, 182, 212, 0.08) 100%);
    transform: translateX(4px);
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.15);
}

.phase.locked {
    border-left-color: rgba(148, 163, 184, 0.4);
    background: rgba(15, 23, 42, 0.5);
}

.phase.locked:hover {
    transform: none;
    box-shadow: none;
}

.phase.locked .phase-header {
    opacity: 0.6;
}

/* Collapsible phases */
.phase.collapsed {
    padding: 16px 20px;
}

.phase.collapsed .phase-header {
    margin-bottom: 0;
}

.phase.active-phase {
    border-left-width: 6px;
    box-shadow: 0 0 25px rgba(14, 165, 233, 0.2);
}

.phase-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 16px;
    cursor: pointer;
    user-select: none;
    transition: all 0.2s ease;
}

.phase-header:hover {
    opacity: 0.9;
}

.phase-toggle-icon {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-right: 8px;
    transition: transform 0.3s ease;
}

.phase-status-icon {
    font-size: 1.2rem;
    margin-left: 8px;
}

.phase-info h3 {
    font-size: 1.15rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

.phase-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.phase-progress {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
    min-width: 140px;
}

.phase-progress-text {
    font-size: 1.1rem;
    font-weight: 700;
    background: linear-gradient(135deg, #22c55e 0%, #10b981 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(34, 197, 94, 0.3);
}

.phase-progress-bar {
    width: 140px;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.phase-progress-bar .fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 10px currentColor;
}

.phase-steps-count {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Phase title row with domain badge */
.phase-title-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 4px;
}

.domain-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    white-space: nowrap;
}

.estimated-time {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 6px;
    display: inline-block;
}

/* Step meta section */
.step-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 6px;
    margin-left: auto;
    flex-shrink: 0;
}

.step-type-badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
}

.step-type-badge[data-type="lesson"] {
    background: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
}

.step-type-badge[data-type="quiz"] {
    background: rgba(34, 197, 94, 0.2);
    color: #4ade80;
}

.step-type-badge[data-type="case"] {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
}

.step-type-badge[data-type="pbq"] {
    background: rgba(139, 92, 246, 0.2);
    color: #a78bfa;
}

.step-type-badge[data-type="flashcards"] {
    background: rgba(236, 72, 153, 0.2);
    color: #f472b6;
}

.step-type-badge[data-type="exam"] {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

.step-type-badge[data-type="simulation"] {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.3) 0%, rgba(239, 68, 68, 0.3) 100%);
    color: #c4b5fd;
}

.step-type-badge[data-type="review"] {
    background: rgba(6, 182, 212, 0.2);
    color: #22d3ee;
}

.step-type-badge[data-type="milestone"] {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.3) 0%, rgba(245, 158, 11, 0.3) 100%);
    color: #fcd34d;
}

.step-status-icon {
    font-size: 1.25rem;
}

.phase-steps {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.step {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

/* Efecto de brillo al hover */
.step::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transition: left 0.5s ease;
}

.step:hover:not(.locked)::before {
    left: 100%;
}

.step:hover:not(.locked) {
    background: rgba(14, 165, 233, 0.12);
    border-color: var(--primary);
    transform: translateX(8px);
    box-shadow: 0 4px 16px rgba(14, 165, 233, 0.2);
}

.step.completed {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.12) 0%, rgba(16, 185, 129, 0.08) 100%);
    border-color: rgba(34, 197, 94, 0.4);
}

.step.completed:hover {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.18) 0%, rgba(16, 185, 129, 0.12) 100%);
    border-color: rgba(34, 197, 94, 0.6);
}

.step.active {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.18) 0%, rgba(6, 182, 212, 0.12) 100%);
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(14, 165, 233, 0.25), inset 0 0 30px rgba(14, 165, 233, 0.05);
    animation: pulseActive 2s ease-in-out infinite;
}

@keyframes pulseActive {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(14, 165, 233, 0.25), inset 0 0 30px rgba(14, 165, 233, 0.05);
    }

    50% {
        box-shadow: 0 0 30px rgba(14, 165, 233, 0.4), inset 0 0 40px rgba(14, 165, 233, 0.08);
    }
}

.step.locked {
    opacity: 0.55;
    cursor: not-allowed;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(100, 116, 139, 0.15);
    filter: grayscale(70%);
}

.step.locked:hover {
    transform: none;
    box-shadow: none;
}

.step.locked .step-title {
    color: var(--text-muted);
}

.step.locked .step-desc {
    color: rgba(148, 163, 184, 0.7);
}

.step-icon {
    font-size: 2rem;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.step:hover:not(.locked) .step-icon {
    transform: scale(1.1);
    background: rgba(14, 165, 233, 0.2);
}

.step.completed .step-icon {
    background: rgba(34, 197, 94, 0.2);
}

.step.active .step-icon {
    background: rgba(14, 165, 233, 0.25);
    box-shadow: 0 0 15px rgba(14, 165, 233, 0.3);
}

.step-content {
    flex: 1;
    min-width: 0;
}

.step-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    letter-spacing: 0.2px;
}

.step-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.step-status {
    font-size: 1.4rem;
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
    transition: all 0.3s ease;
}

.step.completed .step-status {
    background: rgba(34, 197, 94, 0.2);
    box-shadow: 0 0 12px rgba(34, 197, 94, 0.3);
}

.step.active .step-status {
    background: rgba(14, 165, 233, 0.2);
    animation: pulseStatus 1.5s ease-in-out infinite;
}

@keyframes pulseStatus {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

.step.locked .step-status {
    background: rgba(100, 116, 139, 0.15);
    opacity: 0.6;
}

/* Estilos específicos por tipo de paso */
.step[data-type="lesson"] .step-icon {
    background: rgba(59, 130, 246, 0.15);
}

.step[data-type="case"] .step-icon {
    background: rgba(245, 158, 11, 0.15);
}

.step[data-type="pbq"] .step-icon {
    background: rgba(168, 85, 247, 0.15);
}

.step[data-type="exam"] .step-icon {
    background: rgba(239, 68, 68, 0.15);
}

.step[data-type="flashcards"] .step-icon {
    background: rgba(20, 184, 166, 0.15);
}

.step[data-type="simulation"] .step-icon {
    background: rgba(234, 179, 8, 0.2);
}

/* ==========================================
   Study Mode
   ========================================== */
.lesson-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
    padding: 16px 20px;
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    justify-content: center;
}

.lesson-tab {
    padding: 10px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.8rem;
    text-align: center;
    font-weight: 500;
    white-space: nowrap;
}

.lesson-tab:hover {
    border-color: var(--primary);
    background: rgba(14, 165, 233, 0.15);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.lesson-tab.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-color: var(--primary-light);
    color: white;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.4);
}

.study-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 960px;
    margin: 0 auto;
    width: 100%;
}

.study-section {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, #0369a1 100%);
    cursor: pointer;
    transition: var(--transition);
}

.section-header:hover {
    filter: brightness(1.1);
}

.section-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.section-arrow {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.section-header.open .section-arrow {
    transform: rotate(180deg);
}

.section-content {
    display: none;
    padding: 28px 32px;
    background: var(--bg-card);
}

.section-content.open {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.concept-card {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.06) 0%, rgba(6, 182, 212, 0.03) 100%);
    padding: 24px 28px;
    margin-bottom: 24px;
    border-left: 4px solid var(--primary);
    border-radius: var(--border-radius);
    border: 1px solid rgba(14, 165, 233, 0.15);
}

.concept-card h4 {
    color: var(--primary-light);
    margin-bottom: 12px;
    font-size: 1.15rem;
    font-weight: 600;
}

.concept-card p {
    color: var(--text-reading);
    line-height: 1.85;
    font-size: 1.02rem;
    max-width: 70ch;
    letter-spacing: 0.01em;
}

.study-bullet-list {
    margin-left: 20px;
    line-height: 1.8;
}

.definition-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 16px;
}

@media (max-width: 768px) {
    .definition-list {
        grid-template-columns: 1fr;
    }
}

.definition-item {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.06) 0%, rgba(6, 182, 212, 0.03) 100%);
    padding: 20px 22px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(14, 165, 233, 0.15);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.definition-item:hover {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.10) 0%, rgba(6, 182, 212, 0.06) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
}

.definition-item strong {
    color: var(--primary-light);
    display: block;
    margin-bottom: 8px;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.definition-item p,
.definition-item span {
    color: var(--text-reading);
    font-size: 0.95rem;
    line-height: 1.7;
    flex: 1;
    letter-spacing: 0.01em;
}

/* ==========================================
   Exam Mode
   ========================================== */
.exam-setup {
    max-width: 650px;
    margin: 0 auto;
    background: linear-gradient(145deg, var(--bg-card) 0%, rgba(15, 40, 71, 0.95) 100%);
    padding: 40px 48px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: hidden;
}

.exam-setup::before {
    content: '📝';
    position: absolute;
    top: -30px;
    right: -30px;
    font-size: 120px;
    opacity: 0.05;
    pointer-events: none;
}

.exam-setup h2 {
    margin-bottom: 32px;
    text-align: center;
    font-size: 1.5rem;
    background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.exam-options {
    display: flex;
    flex-direction: column;
    gap: 28px;
    margin-bottom: 36px;
}

.option-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.option-group label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.radio-option,
.checkbox-option {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.04);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
}

.radio-option:hover,
.checkbox-option:hover {
    background: rgba(14, 165, 233, 0.1);
    border-color: rgba(14, 165, 233, 0.3);
    transform: translateX(4px);
}

.radio-option:has(input:checked),
.checkbox-option:has(input:checked) {
    background: rgba(14, 165, 233, 0.15);
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(14, 165, 233, 0.15);
}

.radio-option input,
.checkbox-option input {
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
    cursor: pointer;
}

select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
}

select:focus {
    outline: none;
    border-color: var(--primary);
}

/* Exam Active */
.exam-active {
    max-width: 800px;
    margin: 0 auto;
}

.exam-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding: 16px 20px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.exam-info {
    display: flex;
    gap: 20px;
    font-size: 0.95rem;
}

.exam-progress {
    display: flex;
    align-items: center;
    gap: 16px;
}

.exam-progress-bar {
    width: 150px;
    height: 8px;
    background: var(--bg-dark);
    border-radius: 4px;
    overflow: hidden;
}

.exam-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    transition: width 0.3s ease;
}

.question-container {
    background: var(--bg-card);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.question-number {
    font-weight: 600;
    color: var(--primary-light);
}

.difficulty-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.difficulty-easy {
    background: rgba(34, 197, 94, 0.2);
    color: var(--success);
}

.difficulty-medium {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.difficulty-hard {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.question-text {
    font-size: 1.15rem;
    line-height: 1.7;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.option:hover:not(.disabled) {
    border-color: var(--primary);
    background: rgba(14, 165, 233, 0.1);
    transform: translateX(4px);
}

.option.selected {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.2) 0%, rgba(6, 182, 212, 0.2) 100%);
}

.option.correct {
    border-color: var(--success);
    background: rgba(34, 197, 94, 0.15);
}

.option.incorrect {
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.15);
}

.option.disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.option-letter {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    font-weight: 600;
    flex-shrink: 0;
}

.option.correct .option-letter {
    background: var(--success);
}

.option.incorrect .option-letter {
    background: var(--danger);
}

.option-text {
    flex: 1;
    line-height: 1.5;
}

.explanation {
    margin-top: 20px;
    padding: 16px 20px;
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid #3b82f6;
    border-radius: var(--border-radius-sm);
    display: none;
}

.explanation.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

.explanation h4 {
    color: #60a5fa;
    margin-bottom: 8px;
}

.explanation p {
    color: var(--text-secondary);
}

.exam-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* Exam Results */
.exam-results {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.results-card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
}

.results-score {
    font-size: 4rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 20px 0;
}

.results-status {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.results-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin: 24px 0;
}

.results-stat {
    padding: 16px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius);
}

.results-stat-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.results-stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==========================================
   Cases Mode
   ========================================== */
.cases-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.case-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.case-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.case-lesson-badge {
    padding: 4px 10px;
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary-light);
    border-radius: 20px;
    font-size: 0.75rem;
}

.case-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.case-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.case-card-footer {
    display: flex;
    justify-content: space-between;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.case-questions-count,
.case-difficulty {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Case Active */
.case-active {
    width: 100%;
}

.case-scenario {
    background: var(--bg-card);
    padding: 32px;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.case-scenario h2 {
    margin-bottom: 16px;
    color: var(--text-primary);
}

.case-scenario-text {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--warning);
    white-space: normal;
}

.case-scenario-text strong {
    color: var(--primary-light);
    font-weight: 600;
    display: block;
    margin-top: 12px;
    margin-bottom: 4px;
    font-size: 1rem;
}

.case-scenario-text strong:first-child {
    margin-top: 0;
}

/* Two-column layout for cases */
.case-layout {
    display: grid;
    grid-template-columns: 55% 45%;
    gap: 32px;
    align-items: start;
}

.case-scenario-panel {
    position: sticky;
    top: 20px;
}

.case-scenario-panel .case-scenario {
    margin-bottom: 0;
}

.case-questions-panel {
    min-height: 400px;
}

.case-questions-panel .question-container {
    margin-bottom: 20px;
}

@media (max-width: 1024px) {
    .case-layout {
        grid-template-columns: 1fr;
    }

    .case-scenario-panel {
        position: static;
    }
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    padding: 12px 28px;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-card-hover);
    border-color: var(--primary);
}

.btn-success {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-success:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.1rem;
}

/* ==========================================
   Modal
   ========================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.25rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--danger);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

/* ==========================================
   Responsive
   ========================================== */
@media (max-width: 1024px) {
    .dashboard-sections {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        padding: 16px;
    }

    .main-content {
        margin-left: 0;
        padding: 20px;
    }

    .main-nav {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-btn {
        padding: 10px 14px;
    }

    .nav-text {
        display: none;
    }

    .lesson-selector {
        display: none;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .actions-grid {
        grid-template-columns: 1fr;
    }

    .exam-header {
        flex-direction: column;
        gap: 12px;
    }

    .results-stats {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   Scrollbar
   ========================================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

/* ==========================================
   Flashcards Mode
   ========================================== */
.flashcards-decks {
    max-width: 1000px;
    margin: 0 auto;
}

.decks-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.decks-header h2 {
    font-size: 1.3rem;
    color: var(--text-primary);
}

.decks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.deck-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    cursor: pointer;
    transition: var(--transition);
}

.deck-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.deck-card.custom {
    border-style: dashed;
}

.deck-card h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.deck-stats {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.deck-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.deck-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-light);
}

.deck-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.deck-stat.new .deck-stat-value {
    color: #3b82f6;
}

.deck-stat.due .deck-stat-value {
    color: #22c55e;
}

.deck-stat.total .deck-stat-value {
    color: var(--text-secondary);
}

.deck-action {
    display: flex;
    gap: 10px;
}

.deck-action .btn {
    flex: 1;
}

/* Flashcard Session */
.flashcards-session {
    max-width: 700px;
    margin: 0 auto;
}

.session-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.session-header span {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Flashcard Container */
.flashcard-container {
    perspective: 1000px;
    margin-bottom: 24px;
}

.flashcard {
    width: 100%;
    height: 350px;
    cursor: pointer;
    position: relative;
}

.flashcard-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

.flashcard.flipped .flashcard-inner {
    transform: rotateY(180deg);
}

.flashcard-front,
.flashcard-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 40px;
    text-align: center;
}

.flashcard-front {
    background: linear-gradient(135deg, var(--bg-card) 0%, #0f3460 100%);
    border: 2px solid var(--primary);
}

.flashcard-back {
    background: linear-gradient(135deg, #064e3b 0%, #065f46 100%);
    border: 2px solid var(--success);
    transform: rotateY(180deg);
}

.card-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.card-content {
    font-size: 1.3rem;
    line-height: 1.6;
    color: var(--text-primary);
    max-height: 200px;
    overflow-y: auto;
}

.card-hint {
    position: absolute;
    bottom: 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
    opacity: 0.7;
}

.flashcard.flipped .card-hint {
    display: none;
}

/* Anki Buttons */
.anki-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.anki-btn {
    flex: 1;
    max-width: 140px;
    padding: 16px 12px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.anki-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.anki-interval {
    font-size: 0.8rem;
    opacity: 0.8;
}

.anki-label {
    font-size: 1rem;
    font-weight: 600;
}

.anki-again {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    color: white;
}

.anki-hard {
    background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
    color: white;
}

.anki-good {
    background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
    color: white;
}

.anki-easy {
    background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
    color: white;
}

/* Flashcard Results */
.flashcards-results {
    max-width: 500px;
    margin: 0 auto;
}

/* Form styles for import modal */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    font-family: monospace;
}

code {
    background: rgba(14, 165, 233, 0.2);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: monospace;
    color: var(--primary-light);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

/* Responsive Flashcards */
@media (max-width: 600px) {
    .flashcard {
        height: 280px;
    }

    .card-content {
        font-size: 1.1rem;
    }

    .anki-buttons {
        flex-wrap: wrap;
    }

    .anki-btn {
        max-width: 48%;
    }
}

/* ==========================================
   PBQ Simulation Styles
   ========================================== */

.pbq-card {
    border-left: 4px solid var(--secondary);
}

.pbq-workspace {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.pbq-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.btn-back {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.btn-back:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

/* Badge Styles */
.case-lesson-badge {
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: inline-block;
}

.badge-simulation {
    background: rgba(139, 92, 246, 0.2);
    color: #a78bfa;
    border: 1px solid #8b5cf6;
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.2);
}

/* Difficulty Badges */
.case-difficulty {
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: inline-block;
}

.difficulty-easy {
    background: rgba(34, 197, 94, 0.2);
    color: var(--success);
    border: 1px solid var(--success);
}

.difficulty-medium,
.difficulty-medio {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
    border: 1px solid var(--warning);
}

.difficulty-hard,
.difficulty-dificil {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
    border: 1px solid var(--danger);
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.2);
}

.pbq-scenario {
    font-size: 1.15rem;
    color: var(--text-primary);
    margin-bottom: 30px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(15, 40, 71, 0.6) 0%, rgba(20, 50, 90, 0.4) 100%);
    border-left: 4px solid var(--primary);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-sm);
    line-height: 1.6;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.pbq-game-area {
    display: grid;
    grid-template-columns: 3fr 7fr;
    gap: 30px;
    min-height: 500px;
}

@media (max-width: 992px) {
    .pbq-game-area {
        grid-template-columns: 1fr;
    }
}

/* Items Pool */
.pbq-items-pool {
    background: var(--bg-dark);
    padding: 20px;
    border-radius: var(--border-radius);
    border: 1px dashed var(--border-color);
}

.pool-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 200px;
}

/* Draggable Items */
.pbq-draggable {
    background: var(--bg-card-hover);
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: grab;
    transition: all 0.2s ease;
    user-select: none;
    box-shadow: var(--shadow-sm);
    font-size: 0.95rem;
}

.pbq-draggable:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.pbq-draggable.dragging {
    opacity: 0.5;
    cursor: grabbing;
    background: var(--primary-dark);
}

.pbq-draggable.tap-selected {
    border-color: var(--primary-light);
    background: rgba(14, 165, 233, 0.18);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.35);
}

.pbq-draggable.correct {
    border-color: var(--success);
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
}

.pbq-draggable.incorrect {
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    animation: shake 0.5s;
}

/* Drop Zones */
.pbq-zones-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.pbq-dropzone {
    background: rgba(10, 22, 40, 0.5);
    border: 2px solid var(--border-color);
    /* Color overridden inline */
    border-radius: var(--border-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 150px;
    transition: transform 0.2s;
}

.pbq-dropzone:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.zone-label {
    padding: 10px;
    font-weight: bold;
    text-align: center;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.zone-content {
    flex-grow: 1;
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Controls & Feedback */
.pbq-controls {
    margin-top: 30px;
    display: flex;
    justify-content: flex-end;
}

.pbq-result {
    margin-top: 20px;
    padding: 20px;
    border-radius: var(--border-radius);
    animation: slideUp 0.3s ease-out;
}

.pbq-result.success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.pbq-result.warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning);
    color: var(--warning);
}

.pbq-result.danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

/* Animations */
@keyframes shake {
    0% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    50% {
        transform: translateX(5px);
    }

    75% {
        transform: translateX(-5px);
    }

    100% {
        transform: translateX(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pulse-animation {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(14, 165, 233, 0.7);
    }

    70% {
        box-shadow: 0 0 0 10px rgba(14, 165, 233, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(14, 165, 233, 0);
    }
}

/* ==========================================
   Simulation Mode Info Panel
   ========================================== */
.simulation-info-panel {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.15) 0%, rgba(6, 182, 212, 0.1) 100%);
    border: 2px solid var(--primary);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    margin-top: 20px;
    animation: fadeIn 0.3s ease;
}

.simulation-info-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.simulation-icon {
    font-size: 2rem;
}

.simulation-info-header h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.simulation-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 16px;
}

.simulation-stat {
    text-align: center;
    padding: 16px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--border-radius);
}

.simulation-stat .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-light);
    display: block;
}

.simulation-stat .stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.simulation-note {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-align: center;
}

.simulation-warning {
    color: var(--warning);
    font-size: 0.9rem;
    text-align: center;
    margin-top: 10px;
    padding: 8px;
    background: rgba(245, 158, 11, 0.1);
    border-radius: var(--border-radius-sm);
}

/* ==========================================
   PBQ Filter Controls
   ========================================== */
.pbqs-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.pbq-filter-controls {
    display: flex;
    gap: 20px;
    margin-bottom: 32px;
    flex-wrap: wrap;
    align-items: center;
    padding: 20px 24px;
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(14, 165, 233, 0.05) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.pbq-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 8px;
}

.pbq-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    min-height: 200px;
}

.pbq-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(14, 165, 233, 0.15);
}

.pbq-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    color: var(--text-primary);
    line-height: 1.4;
}

.pbq-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    flex: 1;
}

.pbq-stats-summary {
    margin-left: auto;
    padding: 8px 16px;
    background: rgba(14, 165, 233, 0.15);
    border-radius: var(--border-radius);
    color: var(--primary-light);
    font-weight: 600;
    font-size: 0.9rem;
}


.pbq-filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pbq-filter-group label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.pbq-filter-select {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    cursor: pointer;
    min-width: 180px;
    transition: var(--transition);
}

.pbq-filter-select:hover {
    border-color: var(--primary);
}

.pbq-filter-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}

/* ==========================================
   PBQ Type Badges
   ========================================== */
.pbq-type-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.pbq-type-drag_drop {
    background: rgba(99, 102, 241, 0.2);
    color: #818cf8;
}

.pbq-type-matching {
    background: rgba(14, 165, 233, 0.2);
    color: var(--primary-light);
}

.pbq-type-ordering {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.pbq-type-fill_command {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
}

.pbq-type-log_analysis {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

.pbq-type-network_analysis {
    background: rgba(168, 85, 247, 0.2);
    color: #c084fc;
}

/* ==========================================
   PBQ Matching Type
   ========================================== */
.pbq-matching-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding: 20px;
}

.pbq-matching-column {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pbq-matching-column h4 {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    text-align: center;
}

.pbq-match-item {
    padding: 16px 20px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.pbq-match-item:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.pbq-match-item.selected {
    border-color: var(--primary);
    background: rgba(14, 165, 233, 0.15);
    box-shadow: var(--shadow-glow);
}

.pbq-match-item.matched {
    border-color: var(--success);
    background: rgba(34, 197, 94, 0.1);
    opacity: 0.7;
    pointer-events: none;
}

.pbq-match-item.incorrect {
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.pbq-match-number {
    position: absolute;
    top: -10px;
    left: -10px;
    width: 28px;
    height: 28px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
}

.pbq-match-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

/* ==========================================
   PBQ Ordering Type
   ========================================== */
.pbq-ordering-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}

.pbq-order-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 12px;
    cursor: grab;
    transition: var(--transition);
}

.pbq-order-item:hover {
    border-color: var(--primary);
}

.pbq-order-item.dragging {
    opacity: 0.5;
    border-color: var(--primary);
    background: rgba(14, 165, 233, 0.1);
}

.pbq-order-item.tap-selected {
    border-color: var(--primary-light);
    background: rgba(14, 165, 233, 0.2);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.3);
}

.pbq-order-item.correct {
    border-color: var(--success);
    background: rgba(34, 197, 94, 0.1);
}

.pbq-order-item.incorrect {
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.pbq-order-number {
    width: 36px;
    height: 36px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.pbq-order-item.correct .pbq-order-number {
    background: var(--success);
}

.pbq-order-item.incorrect .pbq-order-number {
    background: var(--danger);
}

.pbq-order-handle {
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: grab;
}

.pbq-order-content {
    flex: 1;
    color: var(--text-primary);
}

/* ==========================================
   PBQ Fill Command Type
   ========================================== */
.pbq-command-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.pbq-terminal {
    background: #1a1a2e;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.pbq-terminal-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: #16162a;
    border-bottom: 1px solid #2a2a4a;
}

.pbq-terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.pbq-terminal-dot.red {
    background: #ff5f56;
}

.pbq-terminal-dot.yellow {
    background: #ffbd2e;
}

.pbq-terminal-dot.green {
    background: #27c93f;
}

.pbq-terminal-title {
    color: #888;
    font-size: 0.85rem;
    margin-left: 12px;
    font-family: 'Courier New', monospace;
}

.pbq-terminal-body {
    padding: 20px;
    font-family: 'Courier New', Consolas, monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    color: #4ade80;
}

.pbq-terminal-line {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pbq-terminal-prompt {
    color: #38bdf8;
}

.pbq-terminal-input {
    background: transparent;
    border: none;
    border-bottom: 2px solid #4ade80;
    color: #4ade80;
    font-family: inherit;
    font-size: inherit;
    padding: 4px 8px;
    min-width: 200px;
    outline: none;
}

.pbq-terminal-input:focus {
    border-color: var(--primary);
}

.pbq-terminal-input.correct {
    border-color: var(--success);
    background: rgba(34, 197, 94, 0.1);
}

.pbq-terminal-input.incorrect {
    border-color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

.pbq-hint-button {
    padding: 6px 12px;
    background: rgba(245, 158, 11, 0.2);
    border: 1px solid var(--warning);
    border-radius: var(--border-radius-sm);
    color: var(--warning);
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
}

.pbq-hint-button:hover {
    background: rgba(245, 158, 11, 0.3);
}

.pbq-hint-text {
    margin-top: 16px;
    padding: 12px;
    background: rgba(245, 158, 11, 0.1);
    border-left: 3px solid var(--warning);
    border-radius: var(--border-radius-sm);
    color: var(--warning);
    font-size: 0.9rem;
}

/* ==========================================
   PBQ Log Analysis Type
   ========================================== */
.pbq-log-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

.pbq-log-viewer {
    background: #0d1117;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 24px;
}

.pbq-log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: #161b22;
    border-bottom: 1px solid #30363d;
}

.pbq-log-title {
    color: #c9d1d9;
    font-size: 0.9rem;
    font-weight: 500;
}

.pbq-log-content {
    padding: 16px;
    font-family: 'Courier New', Consolas, monospace;
    font-size: 0.85rem;
    line-height: 1.8;
    max-height: 400px;
    overflow-y: auto;
}

.pbq-log-line {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 4px 8px;
    margin: 2px 0;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
}

.pbq-log-line:hover {
    background: rgba(255, 255, 255, 0.05);
}

.pbq-log-line.selected {
    background: rgba(14, 165, 233, 0.2);
    border-left: 3px solid var(--primary);
}

.pbq-log-line.suspicious {
    background: rgba(239, 68, 68, 0.1);
    border-left: 3px solid var(--danger);
}

.pbq-log-line.safe {
    background: rgba(34, 197, 94, 0.1);
    border-left: 3px solid var(--success);
}

.pbq-log-number {
    color: #6e7681;
    min-width: 30px;
    user-select: none;
}

.pbq-log-timestamp {
    color: #8b949e;
    min-width: 120px;
}

.pbq-log-text {
    color: #c9d1d9;
    flex: 1;
}

.pbq-log-text .highlight {
    color: var(--danger);
    font-weight: bold;
}

.pbq-analysis-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
}

.pbq-analysis-title {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 16px;
}

.pbq-analysis-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.pbq-analysis-option {
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}

.pbq-analysis-option:hover {
    border-color: var(--primary);
    color: var(--text-primary);
}

.pbq-analysis-option.selected {
    border-color: var(--primary);
    background: rgba(14, 165, 233, 0.1);
    color: var(--text-primary);
}

/* ==========================================
   PBQ Stats & Progress
   ========================================== */
.pbq-stats-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
}

.pbq-stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pbq-stat-icon {
    font-size: 1.25rem;
}

.pbq-stat-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.pbq-stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==========================================
   Responsive Adjustments
   ========================================== */
@media (max-width: 768px) {
    .simulation-details {
        grid-template-columns: 1fr;
    }

    .pbq-matching-container {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .pbq-analysis-options {
        grid-template-columns: 1fr;
    }

    .pbq-filter-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .pbq-filter-select {
        width: 100%;
    }
}

/* ==========================================
   Difficulty Badges
   ========================================== */
.difficulty-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.difficulty-easy {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #fff;
}

.difficulty-medium {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff;
}

.difficulty-hard {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: #fff;
}

/* ==========================================
   Advanced Study Path Roadmap
   ========================================== */
.study-path {
    background: transparent;
    /* Remove card bg from container */
    padding: 0;
    margin-top: 32px;
}

.roadmap-timeline {
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: relative;
}

/* Vertical connecting line - DESHABILITADA */
/* Se eliminó porque creaba líneas visuales no deseadas detrás de las fases */

.phase {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    position: relative;
    z-index: 1;
    margin-left: 0;
    /* Align with layout */
    transition: var(--transition);
}

.phase.locked {
    opacity: 0.6;
    filter: grayscale(0.8);
    pointer-events: none;
}

.phase-header {
    background: var(--bg-card-hover);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.phase-info h3 {
    margin: 0;
    font-size: 1.1rem;
    color: var(--primary-light);
}

.phase-info p {
    margin: 4px 0 0 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.phase-progress {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 120px;
}

.phase-progress-text {
    font-weight: 700;
    font-size: 0.9rem;
}

.phase-progress-bar {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.phase-progress-bar .fill {
    height: 100%;
    background: var(--success);
    transition: width 0.5s ease;
}

/* Nota: Los estilos de .phase-steps y .step están definidos arriba (líneas 830-900) */

/* ==========================================
   Dashboard Hero Redesign
   ========================================== */
.dashboard-hero {
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(14, 165, 233, 0.15) 100%);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 32px;
    border: 1px solid var(--border-color);
    margin-bottom: 32px;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.dashboard-hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(14, 165, 233, 0.1), transparent 70%);
    pointer-events: none;
}

.hero-welcome h1 {
    font-size: 2.2rem;
    margin: 0 0 12px 0;
    background: linear-gradient(90deg, #fff, var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

.hero-welcome p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 24px;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
    padding: 24px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.progress-circle-container {
    position: relative;
    width: 100px;
    height: 100px;
    flex-shrink: 0;
}

.circular-chart {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    max-height: 100%;
}

.circle-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.1);
    stroke-width: 3.8;
}

.circle {
    fill: none;
    stroke-width: 2.8;
    stroke-linecap: round;
    stroke: var(--success);
    transition: stroke-dasharray 1s ease-out;
}

.percentage {
    fill: #fff;
    font-family: 'Inter', sans-serif;
    font-weight: bold;
    font-size: 0.5em;
    text-anchor: middle;
}

.mini-stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    width: 100%;
}

.mini-stat-item {
    display: flex;
    flex-direction: column;
}

.mini-stat-val {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
}

.mini-stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==========================================
   Gamification & Badges
   ========================================== */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 1000;
    pointer-events: none;
}

.toast-badge {
    background: var(--bg-card);
    border: 1px solid var(--primary);
    border-left: 4px solid var(--primary);
    border-radius: var(--border-radius);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transform: translateX(120%);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    min-width: 280px;
    pointer-events: auto;
}

.toast-badge.show {
    transform: translateX(0);
}

.toast-icon {
    font-size: 2rem;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 700;
    color: var(--primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.toast-message {
    font-weight: 600;
    color: #fff;
    font-size: 1.1rem;
}

/* Dashboard Badges Section */
.badges-section {
    background: var(--bg-card);
    /* Fallback */
    background: linear-gradient(145deg, var(--bg-card), rgba(255, 255, 255, 0.02));
    border-radius: var(--border-radius-lg);
    padding: 24px;
    margin-top: 32px;
    border: 1px solid var(--border-color);
}

.badges-section h2 {
    font-size: 1.2rem;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.badges-grid {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.badge-item {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    position: relative;
    cursor: help;
    transition: all 0.3s ease;
    filter: grayscale(1) opacity(0.4);
    border: 1px solid transparent;
}

.badge-item.unlocked {
    filter: grayscale(0) opacity(1);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.15);
}

.badge-item:hover {
    transform: translateY(-5px);
}

.badge-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-dark);
    color: #fff;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    z-index: 10;
}

.badge-item:hover .badge-tooltip {
    opacity: 1;
}

/* ==========================================
   Search Engine Styles
   ========================================== */
.search-container {
    padding: 0 16px 16px 16px;
    position: relative;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    margin-bottom: 16px;
}

#global-search {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 10px 12px;
    border-radius: 8px;
    color: #fff;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

#global-search:focus {
    background: rgba(0, 0, 0, 0.4);
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.2);
}

.search-results-dropdown {
    position: absolute;
    top: 100%;
    left: 16px;
    right: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    max-height: 300px;
    overflow-y: auto;
    display: none;
}

.search-results-dropdown.active {
    display: block;
}

.search-result-item {
    padding: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    cursor: pointer;
    transition: background 0.2s;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.search-result-title {
    font-weight: 600;
    color: var(--primary-light);
    font-size: 0.9rem;
    display: block;
    margin-bottom: 2px;
}

.search-result-context {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: block;
}

.icon-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
    height: 32px;
    padding: 0 12px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all 0.2s;
    font-size: 0.9rem;
    font-weight: 500;
}

.icon-btn:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

/* ==========================================
   COMPACT DASHBOARD STYLES
   ========================================== */

/* Two-column grid for Actions + Readiness */
.dashboard-compact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

@media (max-width: 900px) {
    .dashboard-compact-grid {
        grid-template-columns: 1fr;
    }
}

/* Compact Quick Actions */
.quick-actions.compact {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 16px;
    border: 1px solid var(--border-color);
}

.quick-actions.compact h3 {
    font-size: 0.95rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.actions-grid-compact {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

@media (max-width: 700px) {
    .actions-grid-compact {
        grid-template-columns: repeat(2, 1fr);
    }
}

.action-btn-compact {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 8px;
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid rgba(14, 165, 233, 0.2);
    border-radius: 10px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.75rem;
    text-align: center;
}

.action-btn-compact:hover {
    background: rgba(14, 165, 233, 0.25);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.action-btn-compact .action-icon {
    font-size: 1.3rem;
}

/* Compact Exam Readiness */
.exam-readiness-compact {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 16px;
    border: 1px solid var(--border-color);
}

.readiness-header-compact {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.readiness-header-compact h3 {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin: 0;
}

.readiness-score-mini {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 6px 14px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
    color: white;
}

.domains-bars-compact {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.domain-bar-compact {
    display: flex;
    align-items: center;
    gap: 8px;
}

.domain-bar-compact .domain-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    min-width: 24px;
    text-align: center;
}

.domain-bar-compact .domain-progress {
    flex: 1;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.domain-bar-compact .domain-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.4s ease;
}

.domain-bar-compact .domain-percent {
    font-size: 0.7rem;
    color: var(--text-secondary);
    min-width: 32px;
    text-align: right;
}

/* Compact Badges Section */
.badges-section-compact {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 16px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.badges-section-compact h3 {
    font-size: 0.95rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.badges-scroll {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) rgba(255, 255, 255, 0.1);
}

.badges-scroll::-webkit-scrollbar {
    height: 6px;
}

.badges-scroll::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.badges-scroll::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 3px;
}

.badges-scroll .badge-item {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
}

/* Compact Activity List */
.activity-compact {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 16px;
    border: 1px solid var(--border-color);
}

.activity-compact h3 {
    font-size: 0.95rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.activity-list-compact {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 150px;
    overflow-y: auto;
}

.activity-list-compact .activity-item {
    padding: 8px 10px;
    font-size: 0.8rem;
}

.activity-list-compact .no-activity {
    padding: 12px;
    font-size: 0.85rem;
}

/* ==========================================
   COMPACT HERO & NEXT STEP CARD
   ========================================== */

/* Compact Hero Section */
.dashboard-hero-compact {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.12) 0%, rgba(139, 92, 246, 0.08) 100%);
    border-radius: var(--border-radius);
    margin-bottom: 16px;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.dashboard-hero-compact .hero-left h1 {
    font-size: 1.4rem;
    margin-bottom: 2px;
    background: linear-gradient(135deg, #fff 0%, #38bdf8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.dashboard-hero-compact .hero-left p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 0;
}

.hero-stats-inline {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.stat-pill {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.stat-pill .stat-icon {
    font-size: 1rem;
}

.stat-pill.highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
}

/* Next Step Card - Main CTA */
.next-step-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15) 0%, rgba(14, 165, 233, 0.15) 100%);
    border-radius: var(--border-radius-lg);
    margin-bottom: 20px;
    border: 2px solid rgba(34, 197, 94, 0.4);
    box-shadow: 0 4px 20px rgba(34, 197, 94, 0.2);
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {

    0%,
    100% {
        box-shadow: 0 4px 20px rgba(34, 197, 94, 0.2);
    }

    50% {
        box-shadow: 0 4px 30px rgba(34, 197, 94, 0.4);
    }
}

.next-step-content {
    flex: 1;
}

.next-step-badge {
    display: inline-block;
    background: var(--success);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.next-step-card h3 {
    font-size: 1.2rem;
    margin: 0 0 4px 0;
    color: var(--text-primary);
}

.next-step-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

.next-step-card .btn {
    flex-shrink: 0;
    padding: 14px 28px;
    font-size: 1rem;
    animation: bounce-subtle 1s ease-in-out infinite;
}

@keyframes bounce-subtle {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-3px);
    }
}

@media (max-width: 700px) {
    .dashboard-hero-compact {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .next-step-card {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

/* ==========================================
   FIREWALL CONFIGURATION PBQ STYLES
   ========================================== */
.pbq-firewall-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

.pbq-firewall-requirements {
    background: rgba(6, 182, 212, 0.1);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.pbq-firewall-requirements h4 {
    margin-bottom: 16px;
    color: var(--secondary);
}

.pbq-firewall-requirements ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pbq-firewall-requirements li {
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-left: 3px solid var(--secondary);
}

.pbq-firewall-builder {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.pbq-firewall-builder h4 {
    margin-bottom: 16px;
    color: var(--primary-light);
}

.pbq-rule-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pbq-rule-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.pbq-rule-row label {
    width: 80px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.pbq-rule-row select {
    flex: 1;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
}

.pbq-rule-row select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}

.pbq-firewall-rules {
    grid-column: span 2;
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.pbq-firewall-rules h4 {
    margin-bottom: 16px;
    color: var(--text-primary);
}

.pbq-rules-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 100px;
}

.pbq-empty-rules {
    color: var(--text-muted);
    text-align: center;
    padding: 30px;
    font-style: italic;
}

.pbq-firewall-rule {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    font-family: 'Consolas', monospace;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.pbq-firewall-rule:hover {
    background: rgba(255, 255, 255, 0.06);
}

.pbq-firewall-rule .rule-number {
    color: var(--text-muted);
    width: 24px;
}

.pbq-firewall-rule .rule-action {
    padding: 4px 10px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.8rem;
}

.pbq-firewall-rule .rule-action.permit {
    background: rgba(34, 197, 94, 0.2);
    color: var(--success);
}

.pbq-firewall-rule .rule-action.deny {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.pbq-firewall-rule .rule-protocol {
    color: var(--secondary);
    font-weight: 600;
}

.pbq-firewall-rule .rule-source,
.pbq-firewall-rule .rule-dest {
    color: var(--primary-light);
}

.pbq-firewall-rule .rule-arrow {
    color: var(--text-muted);
}

.pbq-firewall-rule .rule-port {
    color: var(--warning);
}

.pbq-firewall-rule .btn-remove {
    margin-left: auto;
    background: transparent;
    border: none;
    color: var(--danger);
    cursor: pointer;
    padding: 4px 8px;
    font-size: 1rem;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.pbq-firewall-rule .btn-remove:hover {
    opacity: 1;
}

/* ==========================================
   NETWORK TOPOLOGY PBQ STYLES
   ========================================== */
.pbq-topology-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

.pbq-topology-diagram {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.pbq-topology-diagram h4 {
    margin-bottom: 16px;
    color: var(--text-primary);
}

.pbq-network-map {
    position: relative;
    min-height: 400px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    border: 1px dashed var(--border-color);
}

.pbq-network-node {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 16px;
    background: var(--bg-card);
    border-radius: 10px;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s ease;
    transform: translate(-50%, -50%);
    min-width: 80px;
    text-align: center;
}

.pbq-network-node:hover {
    border-color: var(--primary);
    transform: translate(-50%, -50%) scale(1.05);
}

.pbq-network-node.selected {
    border-color: var(--warning);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.4);
}

.pbq-network-node .node-icon {
    font-size: 1.8rem;
}

.pbq-network-node .node-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

.pbq-network-node .node-details {
    font-size: 0.65rem;
    color: var(--danger);
    background: rgba(239, 68, 68, 0.2);
    padding: 2px 6px;
    border-radius: 4px;
    max-width: 120px;
}

.pbq-topology-findings {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.pbq-topology-findings h4 {
    margin-bottom: 16px;
    color: var(--text-primary);
}

.pbq-issue-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.pbq-issue-option {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.pbq-issue-option:hover {
    background: rgba(255, 255, 255, 0.06);
}

.pbq-issue-option.selected {
    background: rgba(14, 165, 233, 0.15);
    border-color: var(--primary);
}

.pbq-issue-option.correct-answer {
    background: rgba(34, 197, 94, 0.15);
    border-color: var(--success);
}

.pbq-issue-option.wrong-answer {
    background: rgba(239, 68, 68, 0.15);
    border-color: var(--danger);
}

.pbq-issue-option .issue-checkbox {
    font-size: 1.2rem;
    color: var(--primary);
}

.pbq-issue-option .issue-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* ==========================================
   EXAM SIMULATION MODE STYLES
   ========================================== */
.exam-sim-container {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-dark);
    z-index: 2000;
    flex-direction: column;
}

.exam-sim-container.active {
    display: flex;
}

.exam-sim-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: linear-gradient(90deg, var(--bg-sidebar) 0%, #0c4a6e 50%, #082f49 100%);
    border-bottom: 1px solid var(--border-color);
}

.exam-sim-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.exam-sim-title h2 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin: 0;
}

.exam-sim-timer {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(239, 68, 68, 0.2);
    border-radius: 8px;
    border: 1px solid rgba(239, 68, 68, 0.4);
}

.exam-sim-timer.warning {
    background: rgba(245, 158, 11, 0.2);
    border-color: rgba(245, 158, 11, 0.4);
    animation: pulse 1s ease-in-out infinite;
}

.exam-sim-timer.critical {
    background: rgba(239, 68, 68, 0.3);
    border-color: rgba(239, 68, 68, 0.6);
    animation: pulse 0.5s ease-in-out infinite;
}

.exam-sim-timer .timer-icon {
    font-size: 1.2rem;
}

.exam-sim-timer .timer-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'Consolas', monospace;
    color: var(--text-primary);
}

.exam-sim-controls {
    display: flex;
    gap: 12px;
}

.exam-sim-body {
    display: grid;
    grid-template-columns: 250px 1fr;
    flex: 1;
    overflow: hidden;
}

.exam-sim-nav {
    background: var(--bg-card);
    padding: 16px;
    overflow-y: auto;
    border-right: 1px solid var(--border-color);
}

.exam-sim-nav h4 {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.exam-nav-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
}

.exam-nav-btn {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.exam-nav-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.exam-nav-btn.current {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.exam-nav-btn.answered {
    background: rgba(34, 197, 94, 0.3);
    border-color: var(--success);
    color: var(--success);
}

.exam-nav-btn.flagged {
    background: rgba(245, 158, 11, 0.3);
    border-color: var(--warning);
}

.exam-nav-btn.flagged::after {
    content: '🚩';
    font-size: 0.6rem;
    position: absolute;
    top: 2px;
    right: 2px;
}

.exam-sim-question {
    padding: 32px 48px;
    overflow-y: auto;
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.question-number {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.question-text {
    font-size: 1.1rem;
    color: var(--text-primary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.exam-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.exam-option {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.exam-option:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--primary);
}

.exam-option.selected {
    background: rgba(14, 165, 233, 0.15);
    border-color: var(--primary);
}

.exam-option .option-letter {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: 50%;
    font-weight: 700;
    flex-shrink: 0;
}

.exam-option .option-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.question-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.exam-sim-footer {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 16px 24px;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    gap: 24px;
}

.progress-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Exam Results Modal */
.exam-results-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.exam-results-content {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px;
    max-width: 600px;
    width: 90%;
    text-align: center;
    border: 1px solid var(--border-color);
}

.result-score {
    font-size: 4rem;
    font-weight: 800;
    margin: 20px 0;
}

.result-score.passed {
    color: var(--success);
}

.result-score.failed {
    color: var(--danger);
}

.result-status {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.result-breakdown {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin: 24px 0;
    text-align: left;
}

.breakdown-item {
    padding: 16px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.breakdown-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.breakdown-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

@media (max-width: 900px) {

    .pbq-firewall-container,
    .pbq-topology-container {
        grid-template-columns: 1fr;
    }

    .pbq-firewall-rules {
        grid-column: span 1;
    }

    .exam-sim-body {
        grid-template-columns: 1fr;
    }

    .exam-sim-nav {
        display: none;
    }
}