/* ==========================================
   Highlight System Styles
   ========================================== */

/* Highlighted text spans - optimized for dark backgrounds */
.highlight-yellow {
    background: rgba(250, 204, 21, 0.25);
    border-bottom: 2px solid rgba(250, 204, 21, 0.85);
    border-radius: 3px;
    padding: 2px 1px;
    cursor: pointer;
    color: #fef9c3;
    transition: background 0.2s ease;
}

.highlight-yellow:hover {
    background: rgba(250, 204, 21, 0.38);
}

.highlight-green {
    background: rgba(34, 197, 94, 0.22);
    border-bottom: 2px solid rgba(34, 197, 94, 0.85);
    border-radius: 3px;
    padding: 2px 1px;
    cursor: pointer;
    color: #bbf7d0;
    transition: background 0.2s ease;
}

.highlight-green:hover {
    background: rgba(34, 197, 94, 0.35);
}

.highlight-red {
    background: rgba(239, 68, 68, 0.22);
    border-bottom: 2px solid rgba(239, 68, 68, 0.85);
    border-radius: 3px;
    padding: 2px 1px;
    cursor: pointer;
    color: #fecaca;
    transition: background 0.2s ease;
}

.highlight-red:hover {
    background: rgba(239, 68, 68, 0.35);
}

/* ==========================================
   Selection Popup
   ========================================== */
.highlight-popup {
    position: fixed;
    display: none;
    z-index: 9999;
    background: rgba(12, 29, 54, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(56, 189, 248, 0.34);
    border-radius: 12px;
    padding: 6px;
    max-width: calc(100vw - 16px);
    box-shadow: 0 10px 34px rgba(2, 6, 23, 0.65);
    animation: highlightPopIn 0.15s ease-out;
    gap: 4px;
}

.highlight-popup.visible {
    display: flex;
}

@keyframes highlightPopIn {
    from {
        opacity: 0;
        transform: translateY(4px) scale(0.95);
    }

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

.highlight-popup-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid transparent;
    background: transparent;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    color: var(--text-primary);
    -webkit-tap-highlight-color: transparent;
}

.highlight-popup-btn:hover {
    background: rgba(14, 165, 233, 0.2);
    border-color: rgba(14, 165, 233, 0.3);
}

.highlight-popup-btn:active {
    transform: scale(0.9);
}

.highlight-popup-btn.color-yellow {
    color: #facc15;
}

.highlight-popup-btn.color-green {
    color: #34d399;
}

.highlight-popup-btn.color-red {
    color: #fb7185;
}

.highlight-popup-btn.danger {
    color: #fb7185;
}

.highlight-popup-sep {
    width: 1px;
    height: 24px;
    background: rgba(255, 255, 255, 0.15);
    align-self: center;
    margin: 0 2px;
}

/* ==========================================
   Highlights Panel (in Notes view)
   ========================================== */
.highlights-section {
    margin-top: 20px;
    border-top: 0;
    padding-top: 0;
}

.highlights-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid rgba(148, 185, 224, 0.2);
    background: linear-gradient(155deg, rgba(12, 29, 50, 0.7) 0%, rgba(7, 20, 36, 0.8) 100%);
    box-shadow: 0 8px 20px rgba(2, 6, 23, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.highlights-header h2 {
    font-size: 1.3rem;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.highlights-toolbar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.highlights-toolbar .filter-btn {
    padding: 6px 12px;
    border-radius: 20px;
    border: 1px solid rgba(148, 185, 224, 0.22);
    background: rgba(13, 34, 57, 0.42);
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.highlights-toolbar .filter-btn.active,
.highlights-toolbar .filter-btn:hover {
    background: rgba(14, 165, 233, 0.14);
    border-color: rgba(125, 211, 252, 0.44);
    color: var(--text-primary);
}

.highlight-card {
    background: linear-gradient(155deg, rgba(13, 34, 57, 0.72) 0%, rgba(8, 22, 40, 0.82) 100%);
    border: 1px solid rgba(148, 185, 224, 0.18);
    border-radius: var(--border-radius-lg);
    padding: 14px 16px;
    margin-bottom: 10px;
    transition: var(--transition);
    position: relative;
    box-shadow: 0 8px 18px rgba(2, 6, 23, 0.18);
}

.highlight-card:hover {
    border-color: rgba(125, 211, 252, 0.34);
    box-shadow: 0 10px 24px rgba(2, 6, 23, 0.24);
}

.highlight-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.highlight-color-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.highlight-color-dot.yellow {
    background: #facc15;
}

.highlight-color-dot.green {
    background: #34d399;
}

.highlight-color-dot.red {
    background: #fb7185;
}

.highlight-card-text {
    font-size: 0.92rem;
    line-height: 1.55;
    color: var(--text-primary);
    margin-bottom: 8px;
    border-left: 3px solid rgba(14, 165, 233, 0.4);
    padding-left: 12px;
}

.highlight-card-note {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 8px;
    padding-left: 12px;
}

.highlight-card-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.highlight-card-actions button {
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.highlight-card-actions button:hover {
    background: rgba(14, 165, 233, 0.15);
    color: var(--text-primary);
}

.highlight-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.highlight-empty-icon {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

/* ==========================================
   Highlight Note Modal
   ========================================== */
.highlight-note-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.highlight-note-modal.visible {
    display: flex;
}

.highlight-note-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    max-width: 420px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.highlight-note-content h3 {
    margin: 0 0 4px;
    font-size: 1.1rem;
}

.highlight-note-content p {
    margin: 0 0 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.highlight-note-content textarea {
    width: 100%;
    min-height: 80px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    color: var(--text-primary);
    font-size: 0.9rem;
    resize: vertical;
    margin-bottom: 16px;
    font-family: inherit;
}

.highlight-note-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* ==========================================
   Popup positioned below (mobile)
   ========================================== */
.highlight-popup.below {
    animation: highlightPopInBelow 0.15s ease-out;
}

@keyframes highlightPopInBelow {
    from {
        opacity: 0;
        transform: translateY(-4px) scale(0.95);
    }

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

/* ==========================================
   Mobile adjustments
   ========================================== */
@media (max-width: 768px) {
    #notes-view .highlights-section {
        padding-inline: 4px;
        padding-bottom: 4px;
    }

    #notes-view .highlights-header {
        padding: 10px 12px;
    }

    .highlight-popup {
        padding: 7px;
        border-radius: 14px;
        gap: 5px;
    }

    .highlight-popup-btn {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }

    .highlight-card {
        padding: 12px 13px;
    }

    .highlights-toolbar {
        width: 100%;
    }

    .highlights-toolbar .filter-btn {
        flex: 1;
        text-align: center;
    }
}