/* VS Code Dark Theme for CPIT 405 Course Website */
:root {
    /* Core palette (dark) */
    --vscode-bg: #1b1f24;
    --vscode-sidebar: #23272e;
    --vscode-editor: #1b1f24;
    --vscode-tabs: #2b313a;
    --vscode-text: #e6eaf0;
    --vscode-text-muted: #a0a8b3;
    --vscode-accent: #3b82f6;
    --vscode-accent-hover: #2f6fe0;
    --vscode-border: #39424d;
    --vscode-active: #0b3b6f;
    --vscode-warning: #f59e0b;
    --vscode-error: #ef4444;
    --vscode-success: #22c55e;
    --vscode-keyword: #60a5fa;
    --vscode-string: #f29d85;
    --vscode-comment: #86b18b;
    --vscode-function: #e9d88e;

    /* Semantic tokens mapped to core (dark) */
    --color-bg: var(--vscode-bg);
    --color-surface: var(--vscode-sidebar);
    --color-surface-2: var(--vscode-tabs);
    --color-text: var(--vscode-text);
    --color-text-muted: var(--vscode-text-muted);
    --color-accent: var(--vscode-accent);
    --color-accent-hover: var(--vscode-accent-hover);
    --color-border: var(--vscode-border);
    --color-active: var(--vscode-active);
    --color-success: var(--vscode-success);
    --color-warning: var(--vscode-warning);
    --color-error: var(--vscode-error);

    /* Elevation & radii */
    --radius-1: 4px;
    --radius-2: 6px;
    --radius-3: 8px;
    --shadow-1: 0 1px 2px rgba(0,0,0,0.2);
    --shadow-2: 0 4px 10px rgba(0,0,0,0.25);

    /* Special week backgrounds (dark) */
    --week-holiday-bg: #234235;
    --week-exam-bg: #3f2e27;
}

/* VS Code Light Theme */
:root.light-theme {
    /* Core palette (light) - Improved contrast */
    --vscode-bg: #ffffff;
    --vscode-sidebar: #f3f4f6;
    --vscode-editor: #fafafa;
    --vscode-tabs: #e5e7eb;
    --vscode-text: #111827;
    --vscode-text-muted: #374151;
    --vscode-accent: #1d4ed8;
    --vscode-accent-hover: #1e40af;
    --vscode-border: #d1d5db;
    --vscode-active: #dbeafe;
    --vscode-warning: #92400e;
    --vscode-error: #991b1b;
    --vscode-success: #166534;
    --vscode-keyword: #1e40af;
    --vscode-string: #065f46;
    --vscode-comment: #4b5563;
    --vscode-function: #5b21b6;

    /* Semantic tokens mapped to core (light) */
    --color-bg: var(--vscode-bg);
    --color-surface: var(--vscode-sidebar);
    --color-surface-2: var(--vscode-tabs);
    --color-text: var(--vscode-text);
    --color-text-muted: var(--vscode-text-muted);
    --color-accent: var(--vscode-accent);
    --color-accent-hover: var(--vscode-accent-hover);
    --color-border: var(--vscode-border);
    --color-active: var(--vscode-active);
    --color-success: var(--vscode-success);
    --color-warning: var(--vscode-warning);
    --color-error: var(--vscode-error);

    /* Special week backgrounds (light) */
    --week-holiday-bg: #e7f7ee;
    --week-exam-bg: #f3f4f6;
}

:root.light-theme .video-overlay__details {
    background: linear-gradient(180deg, rgba(245, 247, 255, 0.95), rgba(226, 232, 240, 0.98));
    border-top: 1px solid rgba(59, 130, 246, 0.25);
}

:root.light-theme .video-overlay__title {
    color: #0f172a;
}

:root.light-theme .video-overlay__cta {
    border: 1px solid rgba(15, 23, 42, 0.2);
    color: #1d4ed8;
}

:root.light-theme .video-overlay__cta:hover,
:root.light-theme .video-overlay__cta:focus-visible {
    background: rgba(59, 130, 246, 0.12);
    border-color: rgba(59, 130, 246, 0.45);
    color: #0f172a;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Consolas', 'Courier New', monospace;
    background-color: var(--vscode-bg);
    color: var(--vscode-text);
    line-height: 1.6;
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

/* Layout Structure */
.vscode-container {
    display: flex;
    height: 100vh;
    flex-direction: column;
    overflow: hidden;
}

/* Title Bar */
.title-bar {
    background-color: var(--vscode-tabs);
    height: 25px;
    display: flex;
    align-items: center;
    padding: 0 10px;
    border-bottom: 1px solid var(--vscode-border);
}

.title-bar__title {
    color: var(--vscode-text);
    font-size: 12px;
}

.title-bar__title--short {
    display: none;
}

@media (max-width: 600px) {
    .title-bar__title--full {
        display: none;
    }

    .title-bar__title--short {
        display: inline;
    }
}

.window-controls {
    margin-left: auto;
    display: flex;
    gap: 10px;
    align-items: center;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--vscode-text);
    cursor: pointer;
    font-size: 14px;
    padding: 4px 8px;
    border-radius: 3px;
    transition: background-color 0.2s;
    margin-right: 10px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.theme-toggle:hover {
    background-color: var(--vscode-active);
}

.control-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.close { background-color: #ff5f57; }
.minimize { background-color: #ffbd2e; }
.maximize { background-color: #28ca42; }

/* Main Content Area */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
    height: calc(100vh - 25px);
}

/* Sidebar */
.sidebar {
    background-color: var(--vscode-sidebar);
    width: 250px;
    border-right: 1px solid var(--vscode-border);
    padding: 20px 0;
    overflow-y: auto;
}

.sidebar h2 {
    color: var(--vscode-text);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0 20px 10px;
    font-weight: 600;
}

.nav-menu {
    list-style: none;
}

.nav-item {
    margin: 2px 0;
}

.nav-link {
    display: block;
    color: var(--vscode-text);
    text-decoration: none;
    padding: 8px 20px;
    font-size: 15px;
    transition: background-color 0.2s;
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background-color: var(--vscode-active);
    color: white;
}

.nav-link.active {
    background-color: var(--vscode-active);
    border-left-color: var(--vscode-accent);
    color: white;
}

.nav-link::before {
    content: "📄";
    margin-right: 8px;
    font-size: 12px;
}

.nav-link[href="index.html"]::before { content: "🏠"; }
.nav-link[href="syllabus.html"]::before { content: "📋"; }
.nav-link[href="schedule.html"]::before { content: "📅"; }
.nav-link[href="assignments.html"]::before { content: "📝"; }
.nav-link[href="project.html"]::before { content: "🚀"; }
.nav-link[href="policies.html"]::before { content: "📜"; }
.nav-link[href="slides.html"]::before { content: "📑"; }
.nav-link[href="labs.html"]::before { content: "🧪"; }
.nav-link[href="instructors.html"]::before { content: "👨‍🏫"; }
.nav-link[href="playground.html"]::before { content: "🎮"; }
.nav-link[href="course-info.html"]::before { content: "🖥️️"; }
.nav-link[href="questions.html"]::before { content: "❓️"; }
.nav-link[href="videos.html"]::before { content: "📽️"; }
.nav-link[href="tracing.html"]::before { content: "🔍"; }

/* Editor Area */
.editor {
    flex: 1;
    background-color: var(--vscode-editor);
    display: flex;
    flex-direction: column;
}

/* Tab Bar */
.tab-bar {
    background-color: var(--vscode-tabs);
    border-bottom: 1px solid var(--vscode-border);
    display: flex;
    align-items: center;
    height: 35px;
}

.tab {
    background-color: var(--vscode-tabs);
    color: var(--vscode-text-muted);
    padding: 8px 16px;
    border-right: 1px solid var(--vscode-border);
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab.active {
    background-color: var(--vscode-editor);
    color: var(--vscode-text);
    border-bottom: 2px solid var(--vscode-accent);
    z-index: 9999;
    position: relative;
}

.tab::before {
    content: "📄";
    font-size: 12px;
}

/* Content Area */
.content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    overflow-x: hidden;
    line-height: 1.8;
    height: calc(100vh - 85px);
    -webkit-overflow-scrolling: touch;
}

/* Typography */
h1 {
    color: var(--vscode-keyword);
    font-size: 28px;
    margin-bottom: 15px;
    font-weight: 600;
}

h2 {
    color: var(--vscode-function);
    font-size: 22px;
    margin: 5px 0 10px;
    font-weight: 500;
}

h3 {
    color: var(--vscode-accent);
    font-size: 18px;
    margin: 20px 0 10px;
    font-weight: 500;
}

p {
    margin-bottom: 12px;
    color: var(--vscode-text);
}

/* Lists */
ul, ol {
    margin: 10px 0 10px 20px;
}

li {
    margin-bottom: 6px;
    color: var(--vscode-text);
}

/* Code-like elements */
.code-comment {
    color: var(--vscode-comment);
    font-style: italic;
}

.code-string {
    color: var(--vscode-string);
}

.code-keyword {
    color: var(--vscode-keyword);
    font-weight: 600;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
    background-color: var(--vscode-sidebar);
    border-radius: 4px;
    overflow: hidden;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--vscode-border);
}

th {
    background-color: var(--vscode-tabs);
    color: var(--vscode-keyword);
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    color: var(--vscode-text);
}

tr:hover {
    background-color: var(--vscode-active);
}

/* Responsive table container */
.table-container {
    overflow-x: auto;
    border-radius: 4px;
    margin: 15px 0;
}

/* Mobile-first responsive table */
@media (max-width: 768px) {
    .table-container {
        margin: 10px 0;
    }
    
    table {
        font-size: 12px;
    }
    
    th, td {
        padding: 8px 10px;
    }
    
    th {
        font-size: 11px;
        letter-spacing: 0.3px;
    }
}

@media (max-width: 480px) {
    .table-container {
        margin: 8px 0;
    }
    
    table {
        font-size: 11px;
    }
    
    th, td {
        padding: 6px 8px;
    }
    
    th {
        font-size: 10px;
        letter-spacing: 0.2px;
    }

    .quick-access-grid {
        grid-template-columns: 1fr;
    }
}

/* Cards */

.card {
    background-color: var(--vscode-sidebar);
    border: 1px solid var(--vscode-border);
    border-radius: var(--radius-2);
    padding: 15px;
    margin: 15px 0;
    box-shadow: var(--shadow-1);
}

.card h3 {
    margin-top: 0;
    color: var(--vscode-accent);
}

/* Quick Access Section */
.quick-access-section {
    margin: 25px 0 0;
}

.quick-access-section h2 {
    color: var(--vscode-accent);
    margin-bottom: 15px;
    font-size: 1.4em;
    font-weight: 600;
}

/* Quick Access Section inside card */
.card .quick-access-section {
    margin: 20px 0 0 0;
    border-top: 1px solid var(--vscode-border);
    padding-top: 15px;
}

.card .quick-access-section h3 {
    color: var(--vscode-accent);
    margin-bottom: 15px;
    font-size: 1.2em;
}

.quick-access-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.quick-access-card {
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--vscode-sidebar), var(--vscode-tabs));
    border: 1px solid var(--vscode-border);
    border-radius: var(--radius-3);
    padding: 25px;
    text-decoration: none;
    color: var(--vscode-text);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-1);
    position: relative;
    overflow: hidden;
}

.card .review-video-links {
    margin: 8px 0 0;
    padding-left: 18px;
    color: var(--vscode-text-muted);
}

.card .review-video-links a {
    color: #8bb4ff;
    text-decoration: none;
    transition: color 0.2s ease;
}

.card .review-video-links a:hover,
.card .review-video-links a:focus-visible {
    color: var(--vscode-accent);
}

.card .review-video-links a:active {
    color: var(--vscode-accent-hover);
}

.card .review-video-links a[data-video-overlay] {
    cursor: pointer;
}

.quick-access-card.exam-link {
    border-color: var(--vscode-warning);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.18), var(--vscode-tabs));
}

.quick-access-card.exam-link .quick-access-icon {
    filter: drop-shadow(0 4px 6px rgba(245, 158, 11, 0.35));
}

.quick-access-card.exam-link .quick-access-content h4,
.quick-access-card.exam-link .quick-access-arrow {
    color: var(--vscode-warning);
}

.quick-access-card.exam-link:hover {
    border-color: var(--vscode-warning);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.28), var(--vscode-sidebar));
}

.quick-access-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.5s ease;
}

.quick-access-card:hover::before {
    left: 100%;
}

.quick-access-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2);
    border-color: var(--vscode-accent);
    background: linear-gradient(135deg, var(--vscode-tabs), var(--vscode-sidebar));
}

.quick-access-card.quick-access-card--highlight {
    border-left: 4px solid var(--vscode-warning);
}

.video-browser {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 25px;
}

.video-browser__header h2 {
    margin: 0;
    font-size: 20px;
}

.video-browser__subtitle {
    margin: 4px 0 0;
    color: var(--vscode-text-muted);
    font-size: 13px;
}

.video-browser__filters {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    align-items: end;
}

.video-browser__filter-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.video-browser__label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--vscode-text-muted);
}

.video-browser__search {
    background-color: var(--vscode-input-bg);
    color: var(--vscode-text);
    border: 1px solid var(--vscode-border);
    border-radius: 4px;
    padding: 9px 12px;
    font-size: 14px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    width: 100%;
}

.video-browser__search:focus {
    outline: none;
    border-color: var(--vscode-accent);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
}

.video-browser__body {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 20px;
}

.video-browser__chapters {
    background-color: var(--vscode-panel-bg);
    border: 1px solid var(--vscode-border);
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    max-height: 520px;
    overflow: hidden;
}

.video-browser__chapters-header {
    padding: 14px 16px;
    font-size: 13px;
    font-weight: 600;
    border-bottom: 1px solid var(--vscode-border);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--vscode-text-muted);
}

.video-browser__chapter-list {
    padding: 8px 0;
    margin: 0;
    list-style: none;
    flex: 1;
    overflow-y: auto;
}

.video-browser__chapter-list button {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    color: inherit;
    padding: 10px 16px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 2px;
    transition: background-color 0.15s ease;
}

.video-browser__chapter-list button:hover,
.video-browser__chapter-list button:focus-visible {
    background-color: rgba(59, 130, 246, 0.1);
    outline: none;
}

.video-browser__chapter-list button.is-active {
    background-color: rgba(59, 130, 246, 0.15);
    border-left: 2px solid var(--vscode-accent);
}

.video-browser__chapter-name {
    font-size: 13px;
    font-weight: 600;
}

.video-browser__chapter-meta {
    font-size: 11px;
    color: var(--vscode-text-muted);
}

.video-browser__results {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.video-browser__summary {
    font-size: 13px;
    color: var(--vscode-text-muted);
}

.video-browser__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}

.video-card {
    background-color: var(--vscode-panel-bg);
    border: 1px solid transparent;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.video-card__link {
    color: inherit;
    text-decoration: none;
    display: block;
}

.video-card__thumb {
    position: relative;
    aspect-ratio: 16 / 9;
    background-color: var(--vscode-editor-bg);
    overflow: hidden;
}

.video-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.video-card__duration {
    position: absolute;
    right: 8px;
    bottom: 8px;
    background-color: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 999px;
}

.video-card__content {
    padding: 14px 16px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.video-card__meta {
    display: flex;
    gap: 8px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--vscode-text-muted);
}

.video-card__meta span {
    background-color: rgba(59, 130, 246, 0.12);
    color: var(--vscode-accent);
    padding: 2px 6px;
    border-radius: 999px;
}

.video-card__title {
    margin: 0;
    font-size: 15px;
    line-height: 1.4;
    color: var(--vscode-text);
}

.video-card:hover,
.video-card:focus-within {
    transform: translateY(-2px);
    border-color: var(--vscode-accent);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.video-browser__empty {
    padding: 40px 20px;
    text-align: center;
    color: var(--vscode-text-muted);
    border: 1px dashed var(--vscode-border);
    border-radius: 6px;
    background-color: var(--vscode-panel-bg);
}

.video-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.video-overlay.is-visible {
    opacity: 1;
    pointer-events: auto;
}

.video-overlay__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(3px);
}

.video-overlay__dialog {
    position: relative;
    background-color: var(--vscode-editor-bg);
    border: 1px solid var(--vscode-border);
    border-radius: 12px;
    max-width: 960px;
    width: min(92vw, 960px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.video-overlay__close {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.4);
    border: none;
    color: #fff;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: background 0.2s ease;
}

.video-overlay__close:hover,
.video-overlay__close:focus-visible {
    background: rgba(0, 0, 0, 0.6);
    outline: none;
}

.video-overlay__player {
    position: relative;
    aspect-ratio: 16 / 9;
    background: #000;
}

.video-overlay__player iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

.video-overlay__details {
    padding: 18px 22px 22px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: linear-gradient(180deg, rgba(12, 14, 22, 0.92), rgba(5, 6, 10, 0.98));
    border-top: 1px solid rgba(59, 130, 246, 0.18);
}

.video-overlay__title {
    margin: 0;
    font-size: 18px;
    color: #f7f9ff;
    letter-spacing: 0.01em;
}

.video-overlay__cta {
    align-self: flex-start;
    padding: 8px 16px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #f8fbff;
    text-decoration: none;
    font-size: 13px;
    letter-spacing: 0.02em;
    transition: background 0.2s ease, color 0.2s ease, border 0.2s ease;
}

.video-overlay__cta:hover,
.video-overlay__cta:focus-visible {
    background: rgba(59, 130, 246, 0.9);
    border-color: rgba(59, 130, 246, 0.9);
    color: #fff;
    outline: none;
}

@media (max-width: 768px) {
    .video-overlay__dialog {
        width: min(96vw, 720px);
    }

    .video-overlay__title {
        font-size: 16px;
    }

    .video-overlay__cta {
        font-size: 12px;
        padding: 6px 12px;
    }
}

@media (max-width: 480px) {
    .video-overlay__dialog {
        width: 96vw;
        max-height: 80vh;
    }

    .video-overlay__player {
        aspect-ratio: auto;
        height: 200px;
    }

    .video-overlay__close {
        top: 8px;
        right: 8px;
        width: 28px;
        height: 28px;
        font-size: 18px;
    }
}

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

    .video-browser__chapters {
        max-height: none;
    }
}

@media (max-width: 640px) {
    .video-browser__grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}

/* Example Section */
.examples-section {
    margin: 40px 0 0;
}

.examples-container {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.section-heading {
    margin: 0 0 12px;
}

.examples-section .subtle-comment {
    margin-bottom: 18px;
    color: var(--vscode-text-muted);
}

/* Lab Sections */
.lab-outcomes-container,
.lab-solutions-container {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
}

.lab-outcome-group,
.lab-solution-group {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.18), rgba(59, 130, 246, 0.05));
    border: 1px solid var(--vscode-border);
    border-radius: var(--radius-2);
    padding: 20px;
    box-shadow: var(--shadow-1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.lab-outcome-group:hover,
.lab-solution-group:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2);
}

.lab-group-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.lab-group-icon {
    font-size: 1.5em;
}

.lab-group-title {
    margin: 0;
    color: var(--vscode-accent);
    font-size: 1.1em;
    font-weight: 600;
    flex: 1;
}

.lab-outcome-list {
    margin: 0;
    padding-left: 18px;
    color: var(--vscode-text);
}

.lab-outcome-list li {
    margin-bottom: 6px;
}

.lab-solution-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.lab-solution-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--radius-1);
    background-color: var(--vscode-tabs);
    border: 1px solid var(--vscode-border);
    color: var(--vscode-text);
    text-decoration: none;
    font-size: 0.85em;
    transition: all 0.2s ease;
}

.lab-solution-link::before {
    content: "💾";
}

.lab-solution-link:hover {
    background-color: var(--vscode-active);
    border-color: var(--vscode-accent);
    color: var(--vscode-text);
}

@media (max-width: 1024px) {
    .lab-outcomes-container,
    .lab-solutions-container {
       grid-template-columns: 1fr;
    }
}

.examples-group {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(59, 130, 246, 0.05));
    border: 1px solid var(--vscode-border);
    border-radius: var(--radius-2);
    padding: 20px;
    box-shadow: var(--shadow-1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.examples-group:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2);
}

.examples-group-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.examples-group-icon {
    font-size: 1.6em;
}

.examples-group-title {
    margin: 0;
    color: var(--vscode-accent);
    font-size: 1.1em;
    font-weight: 600;
    flex: 1;
}

.examples-badge {
    font-size: 0.7em;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    padding: 3px 8px;
    border-radius: 999px;
    border: 1px solid var(--vscode-warning);
    color: var(--vscode-warning);
    background-color: rgba(245, 158, 11, 0.12);
}

.examples-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.examples-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--radius-1);
    background-color: var(--vscode-tabs);
    border: 1px solid var(--vscode-border);
    color: var(--vscode-text);
    text-decoration: none;
    font-size: 0.85em;
    transition: all 0.2s ease;
}

.examples-link::before {
    content: "💾";
}

.examples-link:hover {
    background-color: var(--vscode-active);
    border-color: var(--vscode-accent);
    color: var(--vscode-text);
}

.quick-access-icon {
    font-size: 2.5em;
    margin-right: 20px;
    min-width: 60px;
    text-align: center;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.quick-access-content {
    flex: 1;
    position: relative;
    padding-right: 30px;
}

.quick-access-content h3 {
    color: var(--vscode-accent);
    margin: 0 0 8px 0;
    font-size: 1.3em;
    font-weight: 600;
}

.quick-access-content p {
    color: var(--vscode-text-muted);
    margin: 0;
    font-size: 0.95em;
    line-height: 1.4;
}

.resource-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

.resource-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background-color: var(--vscode-tabs);
    border: 1px solid var(--vscode-border);
    border-radius: var(--radius-1);
    color: var(--vscode-text);
    text-decoration: none;
    font-size: 0.85em;
    transition: all 0.2s ease;
    box-shadow: none;
}

.resource-link:hover {
    background-color: var(--vscode-active);
    border-color: var(--vscode-accent);
    color: var(--vscode-text);
}

.quick-access-arrow {
    position: absolute;
    top: 20px;
    right: 18px;
    font-size: 1.5em;
    color: var(--vscode-accent);
    opacity: 0;
    transition: all 0.3s ease;
    transform: translateX(-6px);
}

.quick-access-card:hover .quick-access-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* Light theme adjustments for quick access */
:root.light-theme .quick-access-card {
    background: linear-gradient(135deg, var(--vscode-sidebar), #ffffff);
    border-color: var(--vscode-border);
}

:root.light-theme .quick-access-card.exam-link {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), #fff7e6);
    border-color: rgba(245, 158, 11, 0.65);
}

:root.light-theme .quick-access-card.exam-link .quick-access-content h4,
:root.light-theme .quick-access-card.exam-link .quick-access-arrow {
    color: #b45309;
}

:root.light-theme .quick-access-card.exam-link .quick-access-icon {
    filter: drop-shadow(0 4px 6px rgba(245, 158, 11, 0.3));
}

:root.light-theme .quick-access-card.exam-link:hover {
    background: linear-gradient(135deg, #fffbe6, rgba(245, 158, 11, 0.25));
    border-color: rgba(245, 158, 11, 0.8);
}

:root.light-theme .quick-access-card:hover {
    background: linear-gradient(135deg, #ffffff, var(--vscode-sidebar));
    border-color: var(--vscode-accent);
}

:root.light-theme .resource-link,
:root.light-theme .examples-link {
    background-color: #ffffff;
}

@media (max-width: 768px) {
    .resource-links {
        gap: 8px;
    }

    .quick-access-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .resource-link,
    .examples-link {
        width: 100%;
        justify-content: center;
    }

    .examples-container {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 480px) {
    .table-container {
        margin: 8px 0;
    }

    table {
        font-size: 11px;
    }

    th, td {
        padding: 6px 8px;
    }

    th {
        font-size: 10px;
        letter-spacing: 0.2px;
    }

    .quick-access-grid {
        grid-template-columns: 1fr;
    }

    .examples-list {
        flex-direction: column;
    }

    .examples-container {
        grid-template-columns: 1fr;
    }
}

/* Instructor Info Card */
.instructor-card {
    background: linear-gradient(135deg, var(--vscode-sidebar), var(--vscode-tabs));
    border-left: 4px solid var(--vscode-accent);
    padding: 25px;
    margin: 20px 0;
    border-radius: var(--radius-3);
    box-shadow: var(--shadow-2);
}

.instructor-card h2 {
    margin-top: 0;
    color: var(--vscode-keyword);
}

.instructor-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

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

.info-item::before {
    font-size: 16px;
}

/* Calendar Styles */
.calendar-container {
    background-color: var(--vscode-sidebar);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
}

.week-row {
    display: grid;
    grid-template-columns: 80px 120px 1fr 400px;
    gap: 15px;
    padding: 15px;
    border-bottom: 1px solid var(--vscode-border);
    align-items: start;
}

.week-row:last-child {
    border-bottom: none;
}

.week-number {
    color: var(--vscode-keyword);
    font-weight: 600;
}

.week-dates {
    color: var(--vscode-text-muted);
    font-size: 12px;
}

.week-topic {
    color: var(--vscode-text);
}

.week-assignments {
    color: var(--vscode-string);
    font-size: 12px;
}

/* Holiday/Special week styling */
.week-holiday {
    background-color: var(--week-holiday-bg) !important;
}

/* Exam week styling */
.week-exam {
    background-color: var(--week-exam-bg) !important;
}

.past-week {
    background-color: rgba(148, 163, 184, 0.12) !important;
}

:root.light-theme .past-week {
    background-color: rgba(148, 163, 184, 0.18) !important;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    /* Remove any box-shadow or glow effects */
    box-shadow: none;
    /* Add subtle border for definition */
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Matte badge colors for dark theme */
.badge-lab { 
    background-color: #2d5a2d; 
    color: #a7f3a7; 
    border-color: #4a7c4a;
}
.badge-quiz { 
    background-color: #5a4a2a; 
    color: #f4d03f; 
    border-color: #7d6b4a;
}
.badge-assignment { 
    background-color: #2a3f5a; 
    color: #85c1e9; 
    border-color: #4a5f7c;
}
.badge-exam { 
    background-color: #5a2a2a; 
    color: #f1948a; 
    border-color: #7c4a4a;
}
.badge-project { 
    background-color: #4a2a5a; 
    color: #bb8fce; 
    border-color: #6b4a7c;
}

/* Light theme badge adjustments - keep more vibrant but still matte */
:root.light-theme .badge-lab { 
    background-color: #d4edda; 
    color: #155724; 
    border-color: #c3e6cb;
}
:root.light-theme .badge-quiz { 
    background-color: #fff3cd; 
    color: #856404; 
    border-color: #ffeaa7;
}
:root.light-theme .badge-assignment { 
    background-color: #d1ecf1; 
    color: #0c5460; 
    border-color: #bee5eb;
}
:root.light-theme .badge-exam { 
    background-color: #f8d7da; 
    color: #721c24; 
    border-color: #f5c6cb;
}
:root.light-theme .badge-project { 
    background-color: #e2d9f3; 
    color: #4a148c; 
    border-color: #d6bcf7;
}

/* Light theme navigation and interactive elements */
:root.light-theme .nav-link:hover {
    color: var(--vscode-text);
}

:root.light-theme .nav-link.active {
    color: var(--vscode-text);
}

:root.light-theme .tab.active {
    color: var(--vscode-text);
}

:root.light-theme .theme-toggle:hover {
    color: var(--vscode-text);
}

/* Light theme table row hover */
:root.light-theme tr:hover {
    color: var(--vscode-text);
}

/* Light theme card links and interactive elements */
:root.light-theme .card a {
    color: var(--vscode-accent);
}

:root.light-theme .card a:hover {
    color: var(--vscode-accent-hover);
}

/* Light theme week row hover in mobile */
:root.light-theme .week-row:hover {
    color: var(--vscode-text);
}

/* Responsive Design */
@media (max-width: 768px) {
    .vscode-container {
        height: 100vh;
        overflow: hidden;
    }
    
    .main-content {
        flex-direction: column;
        height: calc(100vh - 25px);
        overflow: hidden;
    }
    
    .sidebar {
        width: 100%;
        height: 60px;
        order: 1;
        overflow-x: auto;
        overflow-y: hidden;
        border-right: none;
        border-bottom: 1px solid var(--vscode-border);
        padding: 10px 0;
        display: flex;
        align-items: center;
        white-space: nowrap;
    }
    
    .sidebar h2 {
        display: none;
    }
    
    .nav-menu {
        display: flex;
        gap: 5px;
        padding: 0 10px;
        align-items: center;
        white-space: nowrap;
    }
    
    .nav-item {
        margin: 0;
        flex-shrink: 0;
    }
    
    .nav-link {
        padding: 8px 12px;
        border-radius: 4px;
        border-left: none;
        font-size: 13px;
        white-space: nowrap;
    }
    
    .nav-link.active {
        background-color: var(--vscode-active);
        border-left: none;
        color: var(--vscode-text);
    }
    
    .nav-link:hover {
        color: var(--vscode-text);
    }
    
    .editor {
        order: 2;
        flex: 1;
        height: calc(100vh - 90px);
        overflow: hidden;
    }
    
    .content {
        height: calc(100vh - 115px);
        overflow-y: auto;
        overflow-x: hidden;
        padding: 15px;
        -webkit-overflow-scrolling: touch;
    }
    
    .week-row {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 10px;
    }
    
    .instructor-info {
        grid-template-columns: 1fr;
    }
    
    .calendar-container {
        overflow-x: auto;
    }
    
    table {
        min-width: 600px;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    .card {
        margin: 12px 0;
        padding: 12px;
    }
    
    h1 {
        font-size: 24px;
        margin-bottom: 12px;
    }
    
    h2 {
        font-size: 20px;
        margin: 5px 0 8px;
    }
    
    h3 {
        font-size: 16px;
        margin: 15px 0 8px;
    }
}

/* Extra small screens */
@media (max-width: 480px) {
    .content {
        padding: 12px;
        height: calc(100vh - 102px);
    }
    
    .nav-link {
        padding: 6px 8px;
        font-size: 11px;
    }
    
    .nav-link::before {
        font-size: 10px;
        margin-right: 4px;
    }
    
    .badge {
        font-size: 9px;
        padding: 2px 4px;
    }
    
    .instructor-card {
        padding: 12px;
    }
    
    .week-row {
        padding: 8px;
    }
    
    h1 {
        font-size: 20px;
        margin-bottom: 12px;
    }
    
    h2 {
        font-size: 18px;
        margin: 15px 0 8px;
    }
    
    .sidebar {
        height: 50px;
        padding: 5px 0;
    }
    
    .editor {
        height: calc(100vh - 80px);
    }
    
    .tab-bar {
        height: 30px;
    }
    
    .tab {
        padding: 6px 12px;
        font-size: 11px;
    }
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--vscode-text-muted);
}

/* Animation */
.fade-in {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Footer/Status Bar */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 25px;
    background-color: var(--vscode-tabs);
    border-top: 1px solid var(--vscode-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 15px;
    font-size: 11px;
    color: var(--vscode-text-muted);
    z-index: 1000;
    font-family: 'Consolas', 'Courier New', monospace;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.footer-icon {
    font-size: 12px;
}

.footer-text {
    font-size: 11px;
}

/* Adjust main content to account for footer */
.vscode-container {
    height: calc(100vh - 25px);
}

.main-content {
    height: calc(100vh - 50px); /* 25px for title bar + 25px for footer */
}

.editor {
    height: calc(100vh - 75px); /* 25px for title bar + 25px for tab bar + 25px for footer */
}

.content {
    height: calc(100vh - 100px); /* 25px for title bar + 25px for tab bar + 25px for footer + 25px for content padding */
}

/* Responsive adjustments for footer */
@media (max-width: 768px) {
    .footer {
        padding: 0 10px;
        font-size: 10px;
    }
    
    .footer-left, .footer-right {
        gap: 10px;
    }
    
    .footer-item {
        gap: 3px;
    }
}

@media (max-width: 480px) {
    .footer {
        padding: 0 8px;
        font-size: 9px;
        height: 22px;
    }
    
    .footer-left, .footer-right {
        gap: 8px;
    }
    
    .footer-icon {
        font-size: 10px;
    }
    
    .footer-text {
        font-size: 9px;
    }
    
    .vscode-container {
        height: calc(100vh - 22px);
    }
    
    .main-content {
        height: calc(100vh - 72px);
    }
    
    .editor {
        height: calc(100vh - 97px);
    }
    
    .content {
        height: calc(100vh - 122px);
    }
}

:root:not(.light-theme) .card a.btn {
    background-color: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--vscode-accent);
    color: var(--vscode-accent);
    transition: all 0.2s ease;
}

:root:not(.light-theme) .card a.btn:hover {
    background-color: rgba(59, 130, 246, 0.2);
    color: white;
}

.current-week {
    background-color: rgba(59, 130, 246, 0.22) !important;
    animation: currentWeekPulse 3s ease-in-out infinite;
}

.current-week td {
    color: var(--vscode-text);
    font-weight: 600;
}

@keyframes currentWeekPulse {
    0%, 100% {
        background-color: rgba(59, 130, 246, 0.18);
    }
    50% {
        background-color: rgba(59, 130, 246, 0.32);
    }
}

:root.light-theme .current-week {
    background-color: rgba(29, 78, 216, 0.12) !important;
    animation: currentWeekPulseLight 3s ease-in-out infinite;
}

@keyframes currentWeekPulseLight {
    0%, 100% {
        background-color: rgba(29, 78, 216, 0.08);
    }
    50% {
        background-color: rgba(29, 78, 216, 0.2);
    }
}