:root,
[data-theme="dark"] {
    color-scheme: dark;
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-card: #1a1a24;
    --bg-card-hover: #222230;
    --bg-input: #111118;
    --border-color: rgba(0, 212, 255, 0.15);
    --border-subtle: rgba(255, 255, 255, 0.08);
    --cyan: #00d4ff;
    --cyan-dark: #00a8cc;
    --accent-cyan: #00d4ff;
    --accent-cyan-dark: #00a8cc;
    --blue: #0066ff;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    --success: #00c853;
    --warning: #ff9100;
    --danger: #ff5252;
    --sidebar-bg: #111118;
    --sidebar-border: rgba(255, 255, 255, 0.08);
    --sidebar-text-primary: #ffffff;
    --sidebar-text-secondary: #a0a0b0;
    --sidebar-text-muted: #6b6b7b;
    --topbar-bg: #111118;
    --main-bg: #0a0a0f;
    --sidebar-width: 260px;
    --topbar-height: 64px;
    --gradient-primary: linear-gradient(135deg, var(--cyan) 0%, var(--blue) 100%);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
    --radius: 12px;
    --table-striped-bg: rgba(255, 255, 255, 0.02);
    --table-hover-bg: rgba(0, 212, 255, 0.05);
    --table-active-bg: rgba(0, 212, 255, 0.08);
    --focus-ring: rgba(0, 212, 255, 0.15);
    --btn-close-filter: invert(1) grayscale(100%) brightness(200%);
}

[data-theme="light"] {
    color-scheme: light;
    --bg-primary: #f8fafc;
    --bg-secondary: #eef2f7;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --bg-input: #ffffff;
    --border-color: rgba(2, 132, 199, 0.25);
    --border-subtle: #d1d5db;
    --cyan: #0284c7;
    --cyan-dark: #0369a1;
    --accent-cyan: #0284c7;
    --accent-cyan-dark: #0369a1;
    --blue: #0066ff;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --success: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --sidebar-bg: #111118;
    --sidebar-border: rgba(255, 255, 255, 0.08);
    --sidebar-text-primary: #ffffff;
    --sidebar-text-secondary: #a0a0b0;
    --sidebar-text-muted: #6b6b7b;
    --topbar-bg: #ffffff;
    --main-bg: #f8fafc;
    --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.08);
    --table-striped-bg: rgba(15, 23, 42, 0.03);
    --table-hover-bg: rgba(2, 132, 199, 0.06);
    --table-active-bg: rgba(2, 132, 199, 0.1);
    --focus-ring: rgba(2, 132, 199, 0.15);
    --btn-close-filter: none;
}

* {
    box-sizing: border-box;
}

html {
    max-width: 100%;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--main-bg);
    color: var(--text-primary);
    margin: 0;
    min-height: 100vh;
    max-width: 100%;
    overflow-x: hidden;
}

img,
video,
iframe {
    max-width: 100%;
}

a {
    color: var(--cyan);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--cyan-dark);
}

/* Layout */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 24px 20px;
    border-bottom: 1px solid var(--sidebar-border);
}

.brand-icon {
    width: 42px;
    height: 42px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
}

.brand-title {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--sidebar-text-primary);
}

.brand-subtitle {
    font-size: 0.75rem;
    color: var(--sidebar-text-muted);
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--sidebar-text-secondary);
    border-radius: 8px;
    margin-bottom: 4px;
    transition: all 0.2s;
}

.sidebar-nav .nav-link:hover {
    background: rgba(0, 212, 255, 0.08);
    color: var(--sidebar-text-primary);
}

.sidebar-nav .nav-link.active {
    background: rgba(0, 212, 255, 0.12);
    color: var(--cyan);
    border: 1px solid var(--border-color);
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--sidebar-border);
}

.user-mini {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar, .profile-avatar {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
}

.profile-avatar {
    width: 80px;
    height: 80px;
    font-size: 1.5rem;
    margin: 0 auto;
}

.user-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--sidebar-text-primary);
}

.user-role {
    font-size: 0.75rem;
    color: var(--sidebar-text-muted);
}

.main-panel {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    min-width: 0;
    display: flex;
    flex-direction: column;
    background: var(--main-bg);
}

.topbar {
    height: var(--topbar-height);
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar-title {
    font-size: 1.25rem;
    font-weight: 600;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-right: 16px;
}

.content-area {
    padding: 24px;
    flex: 1;
    min-width: 0;
    max-width: 100%;
}

/* Cards */
.via-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.via-card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-subtle);
}

.via-card-header h5 {
    margin: 0;
    font-weight: 600;
}

.via-card-body {
    padding: 20px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 24px;
    transition: all 0.2s;
}

.stat-card:hover {
    border-color: var(--border-color);
    transform: translateY(-2px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyan);
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.stat-success .stat-value { color: var(--success); -webkit-text-fill-color: var(--success); }
.stat-progress .stat-value { color: var(--cyan); -webkit-text-fill-color: var(--cyan); }
.stat-overdue .stat-value { color: var(--warning); -webkit-text-fill-color: var(--warning); }

.course-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 24px;
    height: 100%;
    transition: all 0.2s;
}

.course-card:hover {
    border-color: var(--border-color);
    box-shadow: var(--shadow-card);
}

.course-card h5 {
    margin: 12px 0 8px;
}

.course-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.course-meta {
    display: flex;
    gap: 16px;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 12px 0;
}

.course-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.course-thumbnail-wrap {
    overflow: hidden;
    border-radius: calc(var(--radius) - 4px);
    border: 1px solid var(--border-subtle);
    background: rgba(0, 212, 255, 0.05);
}

.course-thumbnail-wrap.course-thumbnail-card {
    margin: -24px -24px 16px;
    border-radius: var(--radius) var(--radius) 0 0;
    border: none;
    border-bottom: 1px solid var(--border-subtle);
}

.course-thumbnail-wrap.course-thumbnail-sm {
    width: 48px;
    min-width: 48px;
    height: 48px;
}

.course-table-thumb {
    width: 56px;
}

.course-thumbnail-wrap.course-thumbnail-sm .course-thumbnail,
.course-thumbnail-wrap.course-thumbnail-sm .course-thumbnail-placeholder {
    height: 48px;
}

.course-thumbnail-wrap.course-thumbnail-player {
    width: 96px;
    min-width: 96px;
    height: 96px;
    flex-shrink: 0;
}

.course-thumbnail-wrap.course-thumbnail-preview {
    max-width: 240px;
}

.course-thumbnail {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.course-thumbnail-wrap.course-thumbnail-card .course-thumbnail,
.course-thumbnail-wrap.course-thumbnail-card .course-thumbnail-placeholder {
    height: 160px;
}

.course-thumbnail-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 120px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(15, 23, 42, 0.9));
    color: var(--cyan);
    font-weight: 700;
    letter-spacing: 0.08em;
}

.course-thumbnail-placeholder i {
    font-size: 1.5rem;
    opacity: 0.85;
}

.course-thumbnail-wrap.course-thumbnail-fallback .course-thumbnail {
    display: none;
}

.course-thumbnail-wrap.course-thumbnail-fallback::after {
    content: "";
    display: block;
    width: 100%;
    height: 100%;
    min-height: 120px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.12), rgba(15, 23, 42, 0.9));
}

.lesson-video-wrap iframe {
    border: 0;
    border-radius: var(--radius);
    background: #000;
}

.lesson-video-wrap--compact {
    max-width: 100%;
}

/* AI Training Video — show full D-ID frame without landscape crop */
.lesson-avatar-training-video-wrap {
    width: 100%;
    max-width: 100%;
    background: #000;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
}

.lesson-avatar-training-video-player {
    display: block;
    width: 100%;
    height: auto;
    max-height: min(70vh, 720px);
    object-fit: contain;
    object-position: center center;
    background: #000;
}

.lesson-avatar-training-video-source-link {
    color: var(--text-muted);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.lesson-avatar-training-video-source-link:hover {
    color: var(--cyan);
}

@media (max-width: 767.98px) {
    .lesson-avatar-training-video-player {
        max-height: min(56vh, 520px);
    }
}

/* Lesson player — modern reading layout */
.lesson-player-page {
    max-width: 920px;
    margin: 0 auto;
}

.lesson-breadcrumb {
    margin-bottom: 1rem;
}

.lesson-outline-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-subtle);
}

.lesson-outline-bar-label {
    flex-shrink: 0;
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.lesson-outline-bar-label i {
    margin-right: 4px;
    color: var(--cyan);
}

.lesson-outline-bar-scroll {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 2px;
    scrollbar-width: thin;
}

.lesson-outline-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 12px;
    border: 1px solid var(--border-subtle);
    border-radius: 999px;
    color: var(--text-secondary);
    font-size: 0.82rem;
    white-space: nowrap;
    transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.lesson-outline-pill:hover {
    border-color: var(--border-color);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
}

.lesson-outline-pill.is-active {
    border-color: rgba(0, 212, 255, 0.45);
    background: rgba(0, 212, 255, 0.1);
    color: var(--cyan);
}

.lesson-outline-pill.is-complete {
    color: var(--success);
}

.lesson-outline-pill.is-complete i {
    color: var(--success);
}

.lesson-hero {
    margin-bottom: 1.75rem;
}

.lesson-hero-eyebrow {
    display: inline-block;
    color: var(--cyan);
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 10px;
}

.lesson-hero-top {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.lesson-hero-title {
    margin: 0;
    font-size: clamp(1.65rem, 3vw, 2.15rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.lesson-hero-lead {
    margin: 0;
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.65;
    max-width: 72ch;
}

.lesson-body {
    margin-bottom: 2rem;
}

.lesson-video-stage {
    margin-bottom: 2rem;
    border-radius: calc(var(--radius) + 4px);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
    background: #000;
}

.lesson-video-stage .lesson-video-wrap {
    margin: 0;
}

.lesson-video-stage .video-fallback {
    border: none;
    border-radius: 0;
}

.lesson-pdf-viewer {
    width: 100%;
    min-height: 720px;
    border: 1px solid rgba(148, 163, 184, 0.25);
    border-radius: 14px;
    overflow: hidden;
    background: #0f172a;
    margin: 1.25rem 0;
}

.lesson-pdf-viewer iframe,
.lesson-pdf-viewer object,
.lesson-pdf-viewer embed {
    width: 100%;
    height: 720px;
    border: 0;
    background: #ffffff;
}

.lesson-pdf-viewer-note {
    margin-top: -0.5rem;
}

@media (max-width: 768px) {
    .lesson-pdf-viewer {
        min-height: 520px;
    }

    .lesson-pdf-viewer iframe,
    .lesson-pdf-viewer object,
    .lesson-pdf-viewer embed {
        height: 520px;
    }
}

.lesson-presentation-viewer {
    width: 100%;
    aspect-ratio: 16 / 9;
    min-height: 420px;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    overflow: hidden;
    background: var(--bg-card);
    margin: 1.25rem 0;
}

.lesson-presentation-viewer iframe {
    width: 100%;
    height: 100%;
    border: 0;
    background: #000;
}

.lesson-presentation-viewer-note {
    margin-top: -0.5rem;
}

@media (max-width: 768px) {
    .lesson-presentation-viewer {
        min-height: 260px;
    }
}

.lesson-article-lead {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.65;
    margin-bottom: 1.5rem;
}

.lesson-article-body {
    color: var(--text-primary);
    font-size: 1rem;
    line-height: 1.75;
}

.lesson-article-body.lesson-text {
    max-width: 72ch;
}

.lesson-article-body.lesson-rich-text {
    max-width: 72ch;
}

.lesson-rich-text h2,
.lesson-rich-text h3,
.lesson-rich-text h4 {
    margin: 1.5rem 0 0.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.lesson-rich-text h2 {
    font-size: 1.35rem;
}

.lesson-rich-text h3 {
    font-size: 1.15rem;
}

.lesson-rich-text h4 {
    font-size: 1.05rem;
}

.lesson-rich-text p {
    margin-bottom: 1rem;
}

.lesson-rich-text ul,
.lesson-rich-text ol {
    margin: 0 0 1rem 1.25rem;
}

.lesson-rich-text blockquote {
    margin: 1rem 0;
    padding: 0.75rem 1rem;
    border-left: 3px solid var(--cyan);
    background: rgba(0, 212, 255, 0.05);
    color: var(--text-secondary);
}

.lesson-rich-text blockquote.lesson-callout,
.lesson-rich-text .lesson-callout {
    border-left-width: 4px;
    border-radius: var(--radius);
    background: rgba(0, 212, 255, 0.08);
}

.lesson-rich-text .lesson-callout-important {
    border-left-color: var(--cyan);
}

.lesson-rich-text .lesson-callout-example {
    border-left-color: #7dd3fc;
}

.lesson-rich-text .lesson-callout-warning {
    border-left-color: #fbbf24;
    background: rgba(251, 191, 36, 0.08);
}

.lesson-rich-text hr,
.lesson-article-body hr,
.lesson-content-body hr,
.rich-lesson-content hr {
    border: 0;
    border-top: 1px solid var(--border-subtle);
    margin: 1.5rem 0;
}

.lesson-rich-text img,
.lesson-article-body img,
.lesson-content-body img,
.rich-lesson-content img,
.lesson-rich-text .lesson-inline-image,
.rich-text-editor-host .ql-editor img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    display: block;
    margin: 1rem auto;
    border: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.03);
}

.lesson-inline-image-sm,
.lesson-rich-text img.lesson-inline-image-sm,
.rich-text-editor-host .ql-editor img.lesson-inline-image-sm {
    width: 360px;
    max-width: 100%;
}

.lesson-inline-image-md,
.lesson-rich-text img.lesson-inline-image-md,
.rich-text-editor-host .ql-editor img.lesson-inline-image-md {
    width: 560px;
    max-width: 100%;
}

.lesson-inline-image-lg,
.lesson-rich-text img.lesson-inline-image-lg,
.rich-text-editor-host .ql-editor img.lesson-inline-image-lg {
    width: 720px;
    max-width: 100%;
}

.lesson-inline-image-full,
.lesson-rich-text img.lesson-inline-image-full,
.rich-text-editor-host .ql-editor img.lesson-inline-image-full {
    width: 100%;
    max-width: 100%;
}

.rich-text-editor-host .ql-editor img.lesson-inline-image-selected {
    outline: 2px solid var(--cyan);
    outline-offset: 3px;
    box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.12);
}

.rich-text-image-resize-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.65rem;
    padding: 0.65rem 0.75rem;
    border-top: 1px solid var(--border-subtle);
    background: rgba(0, 212, 255, 0.05);
}

.rich-text-image-control-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem;
}

.rich-text-image-resize-label {
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 600;
    margin-right: 0.15rem;
}

.rich-text-image-size-btn,
.rich-text-image-action-btn {
    border: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    border-radius: 999px;
    padding: 0.2rem 0.7rem;
    font-size: 0.78rem;
    line-height: 1.4;
}

.rich-text-image-size-btn:hover,
.rich-text-image-size-btn.is-active,
.rich-text-image-action-btn:hover,
.rich-text-image-action-btn.is-active {
    color: var(--cyan);
    border-color: rgba(0, 212, 255, 0.45);
    background: rgba(0, 212, 255, 0.1);
}

.lesson-rich-text .lesson-image-align-left img,
.lesson-article-body .lesson-image-align-left img,
.rich-text-editor-host .ql-editor .lesson-image-align-left img,
.rich-text-editor-host .ql-editor p.lesson-image-align-left img {
    margin-left: 0;
    margin-right: auto;
}

.lesson-rich-text .lesson-image-align-center img,
.lesson-article-body .lesson-image-align-center img,
.rich-text-editor-host .ql-editor .lesson-image-align-center img,
.rich-text-editor-host .ql-editor p.lesson-image-align-center img,
.lesson-rich-text figure.lesson-image-align-center img,
.rich-text-editor-host .ql-editor figure.lesson-image-align-center img {
    margin-left: auto;
    margin-right: auto;
}

.lesson-rich-text .lesson-image-align-right img,
.lesson-article-body .lesson-image-align-right img,
.rich-text-editor-host .ql-editor .lesson-image-align-right img,
.rich-text-editor-host .ql-editor p.lesson-image-align-right img {
    margin-left: auto;
    margin-right: 0;
}

.lesson-rich-text figure,
.lesson-article-body figure,
.lesson-content-body figure,
.rich-lesson-content figure,
.lesson-rich-text .lesson-inline-figure {
    margin: 1.25rem 0;
}

.lesson-rich-text figcaption,
.lesson-article-body figcaption,
.lesson-content-body figcaption,
.rich-lesson-content figcaption,
.lesson-rich-text .lesson-image-caption {
    text-align: center;
    color: #94a3b8;
    font-size: 0.85rem;
    margin-top: 0.4rem;
}

.lesson-rich-text a {
    color: var(--cyan);
    text-decoration: underline;
}

.lesson-rich-video {
    margin: 0 0 1.5rem;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    background: #000;
    max-width: 100%;
}

.lesson-rich-video iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.lesson-rich-text .lesson-rich-video {
    max-width: none;
}

/* AI Course Builder form */
.ai-builder-hero-title {
    font-weight: 700;
    color: var(--text-primary);
}

.ai-builder-hero-text,
.ai-builder-section-lead {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.ai-builder-section-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}

.ai-builder-step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    margin-right: 0.5rem;
    border-radius: 999px;
    background: rgba(0, 217, 255, 0.15);
    color: var(--cyan);
    font-size: 0.85rem;
    font-weight: 700;
    vertical-align: middle;
}

.ai-builder-step--optional {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
}

.ai-builder-section .via-card-header h5 {
    display: inline;
    vertical-align: middle;
    margin-bottom: 0;
}

.form-hint {
    margin-top: 0.35rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.45;
}

.bg-cyan-subtle {
    background: rgba(0, 217, 255, 0.12);
    color: var(--cyan);
    border: 1px solid rgba(0, 217, 255, 0.25);
}

.ai-builder-option-card {
    height: 100%;
    padding: 1rem 1.1rem;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.02);
}

.ai-builder-tip-box {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    padding: 0.9rem 1rem;
    border-radius: var(--radius);
    border: 1px dashed rgba(0, 217, 255, 0.35);
    background: rgba(0, 217, 255, 0.05);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.ai-builder-tip-box i {
    color: var(--cyan);
    margin-top: 0.1rem;
}

.ai-builder-actions {
    padding: 0.25rem 0 1rem;
}

.ai-generating-panel {
    margin-bottom: 0;
    border-color: rgba(0, 212, 255, 0.35);
}

.ai-generating-spinner,
.ai-builder-submit .spinner-border {
    color: var(--cyan);
    border-color: rgba(0, 212, 255, 0.25);
    border-right-color: var(--cyan);
}

.ai-builder-submit:disabled {
    opacity: 0.85;
}

.ai-builder-form .form-label {
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.ai-voice-input-wrap {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
}

.ai-voice-input-wrap .form-control,
.ai-voice-input-wrap .form-select {
    flex: 1 1 auto;
}

.ai-voice-input-wrap .ai-voice-mic-btn {
    flex: 0 0 auto;
    width: 2.5rem;
    height: 2.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--cyan);
    padding: 0;
}

.ai-voice-input-wrap .ai-voice-mic-btn:hover:not(:disabled) {
    border-color: var(--cyan);
    background: rgba(0, 212, 255, 0.08);
}

.ai-voice-input-wrap .ai-voice-mic-btn.is-listening {
    color: #fff;
    background: var(--cyan);
    border-color: var(--cyan);
}

.ai-guided-voice-actions {
    align-items: center;
}

.ai-guided-voice-listen-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    min-height: 2rem;
    white-space: nowrap;
}

.ai-guided-voice-listen-btn.is-listening {
    color: #fff;
    background: var(--cyan);
    border-color: var(--cyan);
}

.ai-guided-voice-card .guided-voice-prompt {
    font-size: 1.05rem;
    font-weight: 600;
}

.ai-guided-field-wrap {
    border: 1px solid transparent;
    border-radius: 0.65rem;
    padding: 0.35rem;
    transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.ai-guided-field-wrap.is-guided-active {
    border-color: rgba(0, 212, 255, 0.55);
    background: rgba(0, 212, 255, 0.06);
    box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.15);
}

.guided-field-badge {
    display: inline-block;
    margin-bottom: 0.45rem;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--cyan);
    background: rgba(0, 212, 255, 0.12);
}

.ai-generating-card {
    border-color: rgba(0, 212, 255, 0.35);
    margin-bottom: 0;
}

@media (max-width: 575.98px) {
    .ai-guided-voice-card .d-flex.flex-wrap.gap-2,
    .ai-guided-voice-actions {
        gap: 0.5rem !important;
    }

    .ai-generating-card .via-card-body {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

.ai-voice-help-box {
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.85rem 1rem;
    background: var(--card-bg);
    color: var(--text-secondary);
}

.ai-voice-help-toggle {
    color: var(--cyan);
    text-decoration: none;
}

.ai-voice-help-toggle:hover {
    color: var(--cyan);
    text-decoration: underline;
}

.guided-course-page {
    padding-bottom: 2.5rem;
}

.guided-course-header .badge {
    font-weight: 600;
}

.guided-progress-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    background: rgba(0, 212, 255, 0.11);
    color: var(--cyan);
}

.guided-course-progress-bar {
    height: 0.55rem;
}

/* Dedicated AI Class Mode stage — not the compact side-panel pattern */
.guided-class-stage {
    overflow: hidden;
    border: 1px solid rgba(0, 212, 255, 0.22);
    background:
        radial-gradient(circle at top left, rgba(0, 212, 255, 0.08), transparent 42%),
        var(--card-bg);
}

.guided-class-stage-inner {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.25fr);
    gap: 0;
    min-height: 34rem;
}

.guided-instructor-column {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    padding: 1.5rem;
    border-right: 1px solid var(--border-color);
    background: linear-gradient(180deg, rgba(0, 212, 255, 0.04) 0%, transparent 100%);
}

.guided-material-column {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.guided-instructor-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.guided-avatar-slot {
    position: relative;
    width: 7.5rem;
    height: 7.5rem;
    flex: 0 0 auto;
}

.guided-avatar-placeholder,
.guided-avatar-live {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    overflow: hidden;
}

.guided-avatar-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at 30% 20%, rgba(0, 212, 255, 0.28), rgba(0, 212, 255, 0.08));
    border: 3px solid rgba(0, 212, 255, 0.45);
    box-shadow: 0 10px 28px rgba(0, 212, 255, 0.15);
}

.guided-avatar-ring {
    position: absolute;
    inset: 0.35rem;
    border-radius: 50%;
    border: 1px dashed rgba(0, 212, 255, 0.35);
}

.guided-avatar-icon {
    font-size: 2.4rem;
    color: var(--cyan);
    z-index: 1;
}

/* Reserved for future ElevenLabs / Anam / WebRTC avatar embed */
.guided-avatar-live--iframe iframe,
.guided-avatar-live--video video {
    width: 100%;
    height: 100%;
    border: 0;
    object-fit: cover;
    border-radius: 50%;
}

.guided-avatar-future-note {
    margin-top: 0.35rem;
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.35;
}

.guided-avatar-debug-panel {
    margin-top: 0.65rem;
    padding: 0.55rem 0.75rem;
    border: 1px dashed rgba(0, 212, 255, 0.35);
    border-radius: 0.5rem;
    font-size: 0.74rem;
    color: var(--text-secondary);
    background: rgba(0, 0, 0, 0.12);
}

.guided-avatar-debug-panel ul {
    margin: 0.35rem 0 0;
    padding-left: 1.1rem;
}

.guided-avatar-debug-panel li.ok {
    color: #6ee7a8;
}

.guided-avatar-debug-panel li.fail {
    color: #fbbf24;
}

.guided-avatar-debug-panel li.pending {
    color: var(--text-secondary);
}

.guided-live-avatar-controls {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.guided-live-avatar-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.guided-live-avatar-countdown {
    margin-top: 0.5rem;
    font-size: 0.82rem;
    color: var(--cyan);
}

.guided-live-avatar-message {
    margin-top: 0.5rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.guided-avatar-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    background: #000;
}

.guided-instructor-meta {
    min-width: 0;
}

.guided-instructor-label {
    display: block;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    margin-bottom: 0.15rem;
}

.guided-instructor-name {
    font-size: 1.35rem;
    font-weight: 700;
    margin: 0 0 0.35rem;
    line-height: 1.2;
}

.guided-instructor-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--cyan);
    background: rgba(0, 212, 255, 0.12);
    border: 1px solid rgba(0, 212, 255, 0.25);
}

.guided-instructor-status-badge::before {
    content: "";
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.18);
}

.guided-instructor-status-badge[data-status="waiting"] {
    color: #7dd3fc;
}

.guided-instructor-status-badge[data-status="practice"] {
    color: #fcd34d;
    background: rgba(252, 211, 77, 0.12);
    border-color: rgba(252, 211, 77, 0.28);
}

.guided-instructor-status-badge[data-status="practice"]::before {
    background: #fcd34d;
    box-shadow: 0 0 0 3px rgba(252, 211, 77, 0.18);
}

.guided-instructor-status-badge[data-status="quiz"] {
    color: #86efac;
    background: rgba(134, 239, 172, 0.12);
    border-color: rgba(134, 239, 172, 0.28);
}

.guided-instructor-status-badge[data-status="quiz"]::before {
    background: #86efac;
    box-shadow: 0 0 0 3px rgba(134, 239, 172, 0.18);
}

.guided-speech-bubble {
    position: relative;
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    background: var(--card-bg);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.guided-speech-bubble-tail {
    position: absolute;
    top: -0.55rem;
    left: 2.4rem;
    width: 1rem;
    height: 1rem;
    transform: rotate(45deg);
    background: var(--card-bg);
    border-left: 1px solid var(--border-color);
    border-top: 1px solid var(--border-color);
}

.guided-speech-content {
    padding: 1.1rem 1.15rem;
}

.guided-speech-lead {
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--cyan);
    margin-bottom: 0.5rem;
}

.guided-speech-note {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.guided-instructor-speech {
    line-height: 1.65;
    font-size: 1rem;
}

.guided-section-bullets {
    padding-left: 1.1rem;
    color: var(--text-secondary);
}

.guided-speech-bubble--response {
    border-color: rgba(0, 212, 255, 0.35);
    background: rgba(0, 212, 255, 0.05);
}

.guided-speech-bubble--response .guided-speech-bubble-tail {
    background: rgba(0, 212, 255, 0.05);
    border-color: rgba(0, 212, 255, 0.35);
}

.guided-question-area {
    margin-top: auto;
}

.guided-question-input {
    min-height: 4.5rem;
    resize: vertical;
}

.guided-class-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.guided-class-actions-primary {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.guided-class-actions-primary .btn-lg {
    padding-top: 0.85rem;
    padding-bottom: 0.85rem;
    font-weight: 700;
}

.guided-class-actions-secondary {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.guided-lms-actions {
    margin-top: 0.25rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.guided-lms-action-row {
    width: 100%;
}

.guided-next-lesson-muted {
    opacity: 0.75;
}

.guided-material-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 34rem;
}

.guided-material-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.12);
}

.guided-material-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
}

.guided-material-lesson {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.guided-material-body {
    flex: 1 1 auto;
    padding: 1.25rem;
    overflow: auto;
}

.guided-material-visual {
    border-radius: 0.75rem;
    overflow: hidden;
}

.guided-material-visual .lesson-video-wrap,
.guided-material-visual .lesson-presentation-wrap,
.guided-material-visual .lesson-pdf-viewer-wrap {
    border-radius: 0.75rem;
    overflow: hidden;
}

.guided-material-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    min-height: 16rem;
    text-align: center;
    color: var(--text-secondary);
    border: 1px dashed var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
}

.guided-material-empty i {
    font-size: 2rem;
}

.guided-internal-slide-card {
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1rem 1.1rem;
    background: var(--card-bg);
}

.guided-internal-slide-title {
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.guided-config-warning {
    font-size: 0.9rem;
}

@media (max-width: 991.98px) {
    .guided-class-stage-inner {
        grid-template-columns: 1fr;
        min-height: 0;
    }

    .guided-instructor-column {
        border-right: 0;
        border-bottom: 1px solid var(--border-color);
    }

    .guided-material-panel {
        min-height: 20rem;
    }

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

@media (max-width: 575.98px) {
    .guided-instructor-column {
        padding: 1rem;
    }

    .guided-avatar-slot {
        width: 5.5rem;
        height: 5.5rem;
    }

    .guided-avatar-icon {
        font-size: 1.85rem;
    }

    .guided-instructor-name {
        font-size: 1.15rem;
    }

    .guided-class-actions-secondary {
        flex-direction: column;
    }

    .guided-class-actions-secondary .btn,
    .guided-class-actions-secondary form {
        width: 100%;
    }

    .guided-class-actions-secondary form .btn {
        width: 100%;
    }
}

.ai-preview-slide-card,
.ai-preview-image-card {
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.85rem 1rem;
    margin-bottom: 0.75rem;
    background: var(--card-bg);
}

.ai-preview-instructor-block h6 {
    margin-top: 1rem;
}

#lesson-form .form-text {
    color: var(--text-secondary) !important;
    opacity: 1;
    font-size: 0.85rem;
    line-height: 1.45;
    margin-top: 0.35rem;
}

#lesson-form .form-text strong {
    color: var(--text-secondary);
    font-weight: 600;
}

.ai-builder-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.ai-builder-tab {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.65rem 1rem;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    color: var(--text-secondary);
    text-decoration: none;
    background: var(--bg-secondary);
    transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.ai-builder-tab:hover {
    color: var(--cyan);
    border-color: rgba(0, 212, 255, 0.35);
}

.ai-builder-tab.is-active {
    color: var(--cyan);
    border-color: rgba(0, 212, 255, 0.55);
    background: rgba(0, 212, 255, 0.08);
}

/* Rich text editor (Quill) */
.rich-text-field {
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-secondary);
}

.rich-text-editor-host .ql-toolbar.ql-snow {
    border: none;
    border-bottom: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    flex-wrap: wrap;
    row-gap: 0.35rem;
}

.rich-text-editor-host .ql-toolbar.ql-snow .ql-formats {
    margin-right: 8px;
    margin-bottom: 4px;
}

.rich-text-editor-host .ql-container.ql-snow {
    border: none;
    min-height: 280px;
    font-size: 0.95rem;
}

.rich-text-editor-host .ql-editor {
    min-height: 280px;
    color: var(--text-primary);
    line-height: 1.65;
}

.rich-text-editor-host .ql-editor.ql-blank::before {
    color: var(--text-muted);
    font-style: normal;
    pointer-events: none;
    user-select: none;
}

.rich-text-editor-host .ql-snow .ql-stroke {
    stroke: var(--text-secondary);
}

.rich-text-editor-host .ql-snow .ql-fill,
.rich-text-editor-host .ql-snow .ql-picker.ql-expanded .ql-picker-label .ql-stroke {
    fill: var(--text-secondary);
    stroke: var(--text-secondary);
}

.rich-text-editor-host .ql-snow .ql-picker {
    color: var(--text-secondary);
}

.rich-text-editor-host .ql-snow .ql-picker-options {
    background: var(--bg-card);
    border-color: var(--border-subtle);
}

.rich-text-editor-host .ql-snow .ql-picker-item:hover,
.rich-text-editor-host .ql-snow .ql-picker-item.ql-selected {
    color: var(--cyan);
}

.rich-text-editor-host .ql-snow.ql-toolbar button:hover,
.rich-text-editor-host .ql-snow.ql-toolbar button.ql-active,
.rich-text-editor-host .ql-snow.ql-toolbar .ql-picker-label:hover,
.rich-text-editor-host .ql-snow.ql-toolbar .ql-picker-label.ql-active {
    color: var(--cyan);
}

.rich-text-editor-host .ql-snow.ql-toolbar button:hover .ql-stroke,
.rich-text-editor-host .ql-snow.ql-toolbar button.ql-active .ql-stroke,
.rich-text-editor-host .ql-snow.ql-toolbar .ql-picker-label:hover .ql-stroke,
.rich-text-editor-host .ql-snow.ql-toolbar .ql-picker-label.ql-active .ql-stroke {
    stroke: var(--cyan);
}

.rich-text-editor-host .ql-snow.ql-toolbar button:hover .ql-fill,
.rich-text-editor-host .ql-snow.ql-toolbar button.ql-active .ql-fill {
    fill: var(--cyan);
}

.rich-text-editor-host .ql-snow.ql-toolbar .ql-rich-hr,
.rich-text-editor-host .ql-snow.ql-toolbar .ql-rich-callout {
    width: auto;
    min-width: 2rem;
    padding: 0 0.35rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.rich-text-editor-host .ql-snow.ql-toolbar .ql-rich-hr:hover,
.rich-text-editor-host .ql-snow.ql-toolbar .ql-rich-callout:hover,
.rich-text-editor-host .ql-snow.ql-toolbar .ql-rich-hr:focus,
.rich-text-editor-host .ql-snow.ql-toolbar .ql-rich-callout:focus {
    color: var(--cyan);
}

.lesson-bottom-panel {
    margin-top: 0;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-subtle);
}

.lesson-ai-class-callout {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.15rem;
    margin-bottom: 1rem;
    border: 1px solid rgba(0, 212, 255, 0.22);
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(0, 212, 255, 0.02));
}

.lesson-ai-class-callout-copy {
    flex: 1 1 16rem;
    min-width: 0;
}

.lesson-ai-class-callout-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--cyan);
    margin-bottom: 0.35rem;
}

.lesson-ai-class-callout p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.5;
}

.lesson-quiz-panel {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 16px 18px;
    margin-bottom: 16px;
    border: 1px solid rgba(0, 212, 255, 0.18);
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
}

.lesson-quiz-panel-main {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    min-width: 0;
    flex: 1 1 280px;
}

.lesson-quiz-panel-title {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    min-width: 0;
}

.lesson-quiz-panel-title i {
    color: var(--cyan);
    font-size: 1.2rem;
    margin-top: 2px;
}

.lesson-quiz-panel-title strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.lesson-quiz-panel-meta {
    display: block;
    color: var(--text-muted);
    font-size: 0.82rem;
    line-height: 1.45;
}

.lesson-quiz-panel-actions {
    flex-shrink: 0;
}

.lesson-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.lesson-actions-nav,
.lesson-actions-primary {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.lesson-actions-primary {
    margin-left: auto;
}

.video-fallback {
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.08), rgba(15, 23, 42, 0.95));
}

.video-fallback i {
    font-size: 2rem;
    color: var(--cyan);
    display: block;
    margin-bottom: 12px;
}

.video-fallback--compact {
    padding: 24px 18px;
}

.lesson-resources {
    border-top: 1px solid var(--border-subtle);
    padding-top: 20px;
    margin-top: 24px;
}

.lesson-resources-title {
    margin-bottom: 12px;
    color: var(--text-primary);
}

.lesson-content-body {
    margin-top: 16px;
}

.lesson-image-preview img {
    max-height: 420px;
    object-fit: contain;
    border: 1px solid var(--border-subtle);
}

.lesson-description {
    font-size: 1rem;
    margin-bottom: 16px;
}

@media (max-width: 767.98px) {
    .lesson-player-page {
        max-width: 100%;
    }

    .lesson-outline-bar {
        flex-direction: column;
        align-items: flex-start;
    }

    .lesson-outline-bar-scroll {
        width: 100%;
    }

    .lesson-hero-title {
        font-size: 1.5rem;
    }
}

/* Buttons */
.btn-primary-via {
    background: var(--gradient-primary);
    border: none;
    color: white;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 8px;
    transition: all 0.2s;
}

.btn-primary-via:hover {
    opacity: 0.9;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(0, 212, 255, 0.3);
}

.btn-outline-cyan {
    border: 1px solid var(--cyan);
    color: var(--cyan);
    background: transparent;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.2s;
}

.btn-outline-cyan:hover {
    background: rgba(0, 212, 255, 0.1);
    color: var(--cyan);
    border-color: var(--cyan);
}

/* Forms */
.form-control-via, .form-select.form-control-via {
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 10px 14px;
}

.form-control-via:focus, .form-select.form-control-via:focus {
    background: var(--bg-input);
    border-color: var(--cyan);
    color: var(--text-primary);
    box-shadow: 0 0 0 3px var(--focus-ring);
}

[data-theme="dark"] input[type="date"].form-control-via,
[data-theme="dark"] input[type="date"].assign-date-input {
    color-scheme: dark;
}

[data-theme="dark"] input[type="date"].form-control-via::-webkit-calendar-picker-indicator,
[data-theme="dark"] input[type="date"].assign-date-input::-webkit-calendar-picker-indicator {
    filter: invert(1) brightness(1.4);
    opacity: 0.85;
    cursor: pointer;
}

[data-theme="dark"] input[type="date"].form-control-via::-webkit-calendar-picker-indicator:hover,
[data-theme="dark"] input[type="date"].assign-date-input::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
}

[data-theme="light"] input[type="date"].form-control-via,
[data-theme="light"] input[type="date"].assign-date-input {
    color-scheme: light;
}

.form-label {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 6px;
}

.form-check-input:checked {
    background-color: var(--cyan);
    border-color: var(--cyan);
}

/* Tables */
.table.via-table,
.via-card .table {
    --bs-table-bg: var(--bg-card);
    --bs-table-color: var(--text-primary);
    --bs-table-border-color: var(--border-subtle);
    --bs-table-striped-bg: var(--table-striped-bg);
    --bs-table-hover-bg: var(--table-hover-bg);
    --bs-table-active-bg: var(--table-active-bg);
    --bs-table-accent-bg: transparent;
    margin-bottom: 0;
}

.via-card .table-responsive {
    background: var(--bg-card);
    border-radius: 0 0 var(--radius) var(--radius);
}

.table.via-table {
    color: var(--text-primary);
    background-color: var(--bg-card);
}

.table.via-table > :not(caption) > * > * {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-subtle) !important;
    box-shadow: none !important;
}

.table.via-table thead th {
    background: var(--bg-secondary) !important;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 14px 16px;
}

.table.via-table tbody td {
    border-bottom: 1px solid var(--border-subtle);
    padding: 14px 16px;
    vertical-align: middle;
}

.table.via-table tbody tr:hover > * {
    background-color: rgba(0, 212, 255, 0.04) !important;
}

.table.via-table tbody tr:last-child td {
    border-bottom: none;
}

/* Status badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-completed { background: rgba(0, 200, 83, 0.15); color: var(--success); }
.status-in-progress { background: rgba(0, 212, 255, 0.15); color: var(--cyan); }
.status-not-started { background: rgba(160, 160, 176, 0.15); color: var(--text-secondary); }
.status-overdue { background: rgba(255, 145, 0, 0.15); color: var(--warning); }
.status-draft { background: rgba(160, 160, 176, 0.15); color: var(--text-secondary); }
.status-published { background: rgba(0, 212, 255, 0.15); color: var(--cyan); }
.status-archived { background: rgba(107, 107, 123, 0.2); color: var(--text-muted); }

.badge-role, .badge-type {
    background: rgba(0, 212, 255, 0.1);
    color: var(--cyan);
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 6px;
}

/* Progress bars */
.via-progress {
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
}

.via-progress .progress-bar {
    background: var(--gradient-primary);
}

.progress-chart .progress-item {
    margin-bottom: 16px;
}

.progress-chart .progress-item span {
    display: block;
    margin-bottom: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Alerts */
.alert-via {
    border-radius: 8px;
    border: 1px solid var(--border-subtle);
}

.alert-success { background: rgba(0, 200, 83, 0.1); color: var(--success); border-color: rgba(0, 200, 83, 0.3); }
.alert-danger { background: rgba(255, 82, 82, 0.1); color: var(--danger); border-color: rgba(255, 82, 82, 0.3); }
.alert-warning { background: rgba(255, 145, 0, 0.1); color: var(--warning); border-color: rgba(255, 145, 0, 0.3); }
.alert-info { background: rgba(0, 212, 255, 0.1); color: var(--cyan); border-color: rgba(0, 212, 255, 0.3); }

/* Login */
.auth-layout {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at top, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
                var(--bg-primary);
    padding: 24px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.auth-card-wide {
    width: 100%;
}

@media (min-width: 640px) {
    .login-container:has(.auth-card-wide) {
        max-width: 560px;
    }
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow-card);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.brand-icon-lg {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin: 0 auto 16px;
}

.login-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-muted);
    margin: 0;
}

.login-footer {
    text-align: center;
    margin-top: 24px;
    color: var(--text-muted);
}

.auth-flash-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 2000;
    max-width: 400px;
}

/* Lesson outline */
.lesson-outline {
    padding: 8px 0;
}

.outline-module-title {
    padding: 12px 16px 8px;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.outline-lesson {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: var(--text-secondary);
    border-left: 3px solid transparent;
    transition: all 0.2s;
}

.outline-lesson:hover {
    background: rgba(0, 212, 255, 0.05);
    color: var(--text-primary);
}

.outline-lesson.active {
    background: rgba(0, 212, 255, 0.1);
    border-left-color: var(--cyan);
    color: var(--cyan);
}

.outline-lesson.completed {
    color: var(--success);
}

.outline-lesson.completed i {
    color: var(--success);
}

.lesson-content {
    line-height: 1.7;
}

.lesson-text {
    white-space: pre-wrap;
}

.section-title {
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* Certificates */
.certificate-card, .certificate-detail {
    text-align: center;
}

.certificate-icon, .certificate-icon-lg {
    width: 64px;
    height: 64px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.75rem;
    color: var(--cyan);
}

.certificate-icon-lg {
    width: 96px;
    height: 96px;
    font-size: 2.5rem;
}

.certificate-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 32px 24px;
    height: 100%;
}

.error-card .error-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    background: rgba(0, 212, 255, 0.1);
    color: var(--cyan);
}

.error-card .error-icon-danger {
    background: rgba(255, 82, 82, 0.1);
    color: var(--danger);
}

.text-muted { color: var(--text-muted) !important; }

/* Quiz UI */
.quiz-card { border-color: rgba(0, 212, 255, 0.12); }
.question-card { border-color: var(--border-subtle); }
.quiz-meta { color: var(--text-secondary); font-size: 0.9rem; }
.quiz-meta i { color: var(--cyan); margin-right: 4px; }
.quiz-options { display: flex; flex-direction: column; gap: 10px; }
.quiz-option {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px; border: 1px solid var(--border-subtle);
    border-radius: 8px; cursor: pointer; transition: all 0.2s;
}
.quiz-option:hover { border-color: var(--border-color); background: rgba(0, 212, 255, 0.05); }
.quiz-option input { accent-color: var(--cyan); }
.quiz-answer-list { list-style: none; padding: 0; margin: 0; }
.quiz-answer-list li { padding: 8px 0; color: var(--text-secondary); }
.quiz-answer-list li.answer-correct { color: var(--success); }
.score-circle {
    width: 120px; height: 120px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; font-weight: 700; margin: 0 auto;
}
.score-circle.passed { background: rgba(0, 200, 83, 0.15); color: var(--success); border: 3px solid var(--success); }
.score-circle.failed { background: rgba(255, 145, 0, 0.15); color: var(--warning); border: 3px solid var(--warning); }
.empty-icon { font-size: 3rem; color: var(--cyan); opacity: 0.6; }
.breadcrumb-via { --bs-breadcrumb-divider-color: var(--text-muted); }
.breadcrumb-via .breadcrumb-item a { color: var(--cyan); }
.breadcrumb-via .breadcrumb-item.active { color: var(--text-secondary); }
.answer-option-row .input-group-text { color: var(--text-secondary); }

/* Responsive */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-panel {
        margin-left: 0;
    }
}

@media (max-width: 575.98px) {
    .content-area {
        padding: 16px;
    }

    .login-card {
        padding: 24px;
    }
}

.verify-code, .verify-result-box code {
    color: var(--cyan);
    background: rgba(0, 212, 255, 0.08);
    padding: 2px 8px;
    border-radius: 4px;
}

.verify-result-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 16px 20px;
}

.certificate-detail-card .certificate-icon-lg {
    color: var(--cyan);
}

.filter-panel .form-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 0.35rem;
}

.filter-panel .via-input {
    min-height: 40px;
}

.report-filter-form .form-control,
.report-filter-form .form-select {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    border-color: var(--border-subtle);
}

.report-filter-form .form-control:focus,
.report-filter-form .form-select:focus {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    border-color: var(--cyan);
    box-shadow: 0 0 0 0.15rem rgba(0, 212, 255, 0.15);
}

.report-filter-form .form-select option {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.empty-state {
    text-align: center;
    padding: 2.5rem 1.5rem;
}

.empty-state-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.08);
    color: var(--cyan);
    font-size: 1.75rem;
}

.empty-state h5 {
    margin-bottom: 0.5rem;
}

.profile-avatar-lg {
    width: 88px;
    height: 88px;
    font-size: 2rem;
}

.user-mini-link {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.2s;
}

.user-mini-link:hover {
    opacity: 0.85;
    color: inherit;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-outline-danger {
    border-color: rgba(255, 82, 82, 0.45);
    color: #ff8a80;
}

.btn-outline-danger:hover {
    background: rgba(255, 82, 82, 0.12);
    border-color: #ff5252;
    color: #ff5252;
}

/* === Final UI polish === */

.via-input,
.form-control.via-input,
.form-select.via-input {
    background: var(--bg-input);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 10px 14px;
}

.via-input:focus,
.form-control.via-input:focus,
.form-select.via-input:focus {
    background: var(--bg-input);
    border-color: var(--cyan);
    color: var(--text-primary);
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.learning-card {
    border-left: 3px solid transparent;
}

.learning-card:hover {
    border-left-color: var(--cyan);
}

.learning-card.overdue-card,
.course-card.urgent {
    border-color: rgba(255, 145, 0, 0.35);
    border-left: 3px solid var(--warning);
}

.learning-card.completed {
    opacity: 0.92;
}

/* Employee My Learning dashboard */
.learning-welcome-alert {
    padding: 12px 16px;
    margin-bottom: 1.25rem;
}

.learning-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
}

.learning-stat-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.02) 0%, rgba(0, 212, 255, 0.04) 100%);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 16px;
    min-height: 118px;
    display: flex;
    flex-direction: column;
    transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.learning-stat-card:hover {
    border-color: var(--border-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}

.learning-stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--cyan);
    font-size: 1.05rem;
}

.learning-stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--cyan);
    margin-bottom: 4px;
}

.learning-stat-label {
    color: var(--text-primary);
    font-size: 0.84rem;
    font-weight: 600;
}

.learning-stat-hint {
    color: var(--text-muted);
    font-size: 0.72rem;
    margin-top: 4px;
}

.learning-stat-card--success .learning-stat-icon {
    background: rgba(0, 200, 83, 0.12);
    color: var(--success);
}

.learning-stat-card--success .learning-stat-value {
    color: var(--success);
}

.learning-stat-card--progress .learning-stat-value {
    color: var(--cyan);
}

.learning-stat-card--overdue .learning-stat-icon {
    background: rgba(255, 145, 0, 0.12);
    color: var(--warning);
}

.learning-stat-card--overdue .learning-stat-value {
    color: var(--warning);
}

.learning-stat-card--cert .learning-stat-icon {
    background: rgba(0, 212, 255, 0.12);
}

.learning-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.learning-section-header .section-title {
    margin-bottom: 0;
}

.learning-course-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.learning-course-grid--wide {
    grid-template-columns: 1fr;
}

.learning-course-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.learning-course-card:hover {
    border-color: var(--border-color);
    box-shadow: var(--shadow-card);
    transform: translateY(-1px);
}

.learning-course-card--overdue {
    border-color: rgba(255, 145, 0, 0.35);
}

.learning-course-card--completed {
    border-color: rgba(0, 200, 83, 0.22);
    background: linear-gradient(180deg, rgba(0, 200, 83, 0.03) 0%, var(--bg-card) 100%);
}

.learning-course-card--completed:hover {
    transform: none;
}

.learning-course-card--compact .learning-course-card-body {
    padding: 12px 14px;
}

.learning-card-thumb .course-thumbnail-wrap,
.learning-card-thumb .course-thumbnail-wrap.course-thumbnail-compact {
    border: none;
    border-radius: 0;
    border-bottom: 1px solid var(--border-subtle);
    margin: 0;
    width: 100%;
    aspect-ratio: 16 / 9;
    height: auto;
}

.learning-card-thumb .course-thumbnail-wrap .course-thumbnail,
.learning-card-thumb .course-thumbnail-wrap .course-thumbnail-placeholder,
.learning-card-thumb .course-thumbnail-wrap.course-thumbnail-compact .course-thumbnail,
.learning-card-thumb .course-thumbnail-wrap.course-thumbnail-compact .course-thumbnail-placeholder {
    width: 100%;
    height: 100%;
    min-height: 120px;
    object-fit: cover;
}

.learning-course-card-body {
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.learning-course-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    margin-bottom: 8px;
}

.learning-due-date,
.learning-completed-date {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.learning-course-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0 0 6px;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.learning-course-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0 0 10px;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.learning-progress {
    margin-top: auto;
}

.learning-progress-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: 8px;
}

.learning-progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 999px;
    transition: width 0.2s ease;
}

.learning-progress-fill--complete {
    background: var(--success);
}

.learning-progress-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.learning-progress-row .btn {
    flex-shrink: 0;
}

.learning-course-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
}

.course-thumbnail-wrap.course-thumbnail-compact {
    height: 88px;
}

.course-thumbnail-wrap.course-thumbnail-compact .course-thumbnail,
.course-thumbnail-wrap.course-thumbnail-compact .course-thumbnail-placeholder {
    height: 88px;
}

@media (min-width: 576px) {
    .learning-course-grid,
    .learning-course-grid--wide {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 992px) {
    .learning-course-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .learning-course-grid--wide {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (min-width: 1400px) {
    .learning-course-grid--wide {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

.page-intro {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    max-width: 720px;
}

.nav-section-label {
    padding: 16px 16px 6px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sidebar-text-muted);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 999;
}

.sidebar-overlay.show {
    display: block;
}

.app-footer-note {
    font-size: 0.72rem;
    color: var(--text-muted);
    padding: 0 24px 16px;
}

.detail-grid {
    display: grid;
    gap: 12px;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-subtle);
}

.detail-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.detail-label {
    color: var(--text-muted);
    font-size: 0.85rem;
    min-width: 110px;
}

.detail-value {
    text-align: right;
    font-weight: 500;
}

.detail-section-title {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--cyan);
    margin-bottom: 12px;
}

.table-row-overdue {
    background: rgba(255, 145, 0, 0.04);
}

.table-row-overdue:hover {
    background: rgba(255, 145, 0, 0.08) !important;
}

.player-header {
    margin-bottom: 1rem;
}

.player-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.player-meta span i {
    color: var(--cyan);
    margin-right: 4px;
}

.progress-summary-card .stat-label-inline {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.quiz-warning-banner {
    border-left: 3px solid var(--warning);
}

.result-meta p {
    margin-bottom: 0.35rem;
    color: var(--text-secondary);
}

.certificate-meta-grid .meta-block {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 12px 14px;
}

.certificate-meta-grid .meta-block strong {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 4px;
}

.verify-brand-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.verify-brand-header .brand-subtitle-line {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.form-text-via {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 0.35rem;
}

.form-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-top: 1.5rem;
}

.danger-zone {
    border-color: rgba(255, 82, 82, 0.25);
}

.danger-zone .via-card-header {
    color: #ff8a80;
}

.login-tagline {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.login-demo-note {
    background: rgba(0, 212, 255, 0.06);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.quick-action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}

.quick-action-tile {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.02);
    transition: all 0.2s;
}

.quick-action-tile:hover {
    border-color: var(--border-color);
    background: rgba(0, 212, 255, 0.06);
    color: var(--text-primary);
}

.quick-action-tile i {
    color: var(--cyan);
    font-size: 1.1rem;
}

.alert-banner-overdue {
    border-left: 4px solid var(--warning);
}

.outline-lesson.locked {
    opacity: 0.55;
    pointer-events: none;
}

.table-responsive {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

@media (max-width: 991.98px) {
    .detail-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .detail-value {
        text-align: left;
    }

    .player-header .d-flex {
        flex-direction: column;
        align-items: flex-start !important;
    }
}

@media (max-width: 575.98px) {
    .stat-value {
        font-size: 1.65rem;
    }

    .course-actions,
    .form-actions,
    .lesson-actions {
        width: 100%;
    }

    .course-actions .btn,
    .form-actions .btn,
    .lesson-actions .btn {
        flex: 1 1 auto;
    }

    .quiz-option {
        align-items: flex-start;
    }
}

/* Dashboard charts & gauges */
.dashboard-gauge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
}

.gauge-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 20px 16px;
    text-align: center;
}

.gauge-ring {
    --gauge-color: var(--cyan);
    width: 118px;
    height: 118px;
    margin: 0 auto 12px;
    border-radius: 50%;
    background: conic-gradient(
        var(--gauge-color) calc(var(--gauge-value, 0) * 1%),
        rgba(255, 255, 255, 0.06) 0
    );
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.gauge-ring::before {
    content: "";
    position: absolute;
    inset: 14px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
}

.gauge-ring.gauge-success { --gauge-color: var(--success); }
.gauge-ring.gauge-warning { --gauge-color: var(--warning); }
.gauge-ring.gauge-info { --gauge-color: var(--cyan); }

.gauge-value {
    position: relative;
    z-index: 1;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

.gauge-sub {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: 4px;
}

.chart-card {
    min-height: 320px;
}

.chart-card .via-card-body {
    position: relative;
    height: 280px;
}

.chart-card canvas {
    width: 100% !important;
    height: 100% !important;
}

.dashboard-kpi-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
}

.kpi-pill {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    padding: 14px 16px;
}

.kpi-pill strong {
    display: block;
    font-size: 1.4rem;
    color: var(--cyan);
    margin-bottom: 4px;
}

.kpi-pill span {
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.readiness-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.readiness-list li {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-subtle);
}

.readiness-list li:last-child {
    border-bottom: none;
}

.readiness-list span {
    color: var(--text-secondary);
}

.readiness-issue-group + .readiness-issue-group {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-subtle);
}

.readiness-issue-label {
    font-weight: 600;
    margin-bottom: 6px;
}

.readiness-issue-list {
    margin: 0;
    padding-left: 18px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.assign-type-options {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.assign-type-option {
    margin-right: 0;
}

.assign-type-option .form-check-input:checked {
    background-color: var(--cyan);
    border-color: var(--cyan);
}

/* Assign course form */
.assign-course-card .via-card-body {
    padding: 1.5rem 1.75rem;
}

.assign-form-section + .assign-form-section {
    padding-top: 0.25rem;
}

.manager-dept-access-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin-top: 0.5rem;
}

.manager-dept-access-card {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    min-height: 42px;
    padding: 0.65rem 0.9rem;
    margin: 0;
    border: 1px solid rgba(148, 163, 184, 0.35);
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.45);
    color: #e5e7eb;
    cursor: pointer;
    white-space: nowrap;
    line-height: 1;
    user-select: none;
}

.manager-dept-access-card:hover {
    border-color: rgba(0, 212, 255, 0.85);
    background: rgba(0, 212, 255, 0.08);
}

.manager-dept-access-card.is-selected {
    border-color: #00d4ff;
    background: rgba(0, 212, 255, 0.16);
    box-shadow: 0 0 0 1px rgba(0, 212, 255, 0.18);
}

.manager-dept-access-checkbox {
    display: inline-block !important;
    position: static !important;
    float: none !important;
    margin: 0 !important;
    width: 16px !important;
    height: 16px !important;
    min-width: 16px !important;
    accent-color: #00d4ff;
    cursor: pointer;
    opacity: 1 !important;
    visibility: visible !important;
    appearance: auto !important;
    -webkit-appearance: checkbox !important;
}

.manager-dept-access-label {
    display: inline-block;
    color: #f8fafc;
    font-size: 0.92rem;
    font-weight: 500;
    line-height: 1.2;
    margin: 0;
    padding: 0;
    cursor: pointer;
}

.assign-type-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1rem;
}

.assign-type-card {
    position: relative;
    display: block;
    margin: 0;
    cursor: pointer;
}

.assign-type-card-input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.assign-type-card-content {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    height: 100%;
    padding: 1rem 1.1rem;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.02);
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.assign-type-card:hover .assign-type-card-content {
    border-color: rgba(0, 217, 255, 0.35);
}

.assign-type-card.is-selected .assign-type-card-content,
.assign-type-card-input:checked + .assign-type-card-content {
    border-color: var(--cyan);
    background: rgba(0, 217, 255, 0.08);
    box-shadow: 0 0 0 1px rgba(0, 217, 255, 0.25);
}

.assign-type-card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    background: rgba(0, 217, 255, 0.12);
    color: var(--cyan);
    font-size: 1rem;
}

.assign-type-card-title {
    font-weight: 600;
    color: var(--text-primary);
}

.assign-type-card-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.45;
}

.assign-type-info {
    font-size: 0.92rem;
}

#departmentCountPreview {
    color: var(--cyan);
    font-weight: 500;
}

/* Theme toggle */
.theme-toggle-btn {
    min-width: 5.5rem;
    white-space: nowrap;
}

.theme-toggle-btn:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 2px;
}

.auth-theme-bar {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 1100;
}

[data-theme="light"] .sidebar .text-muted {
    color: var(--sidebar-text-muted) !important;
}

.alert-via .btn-close {
    filter: var(--btn-close-filter);
}

[data-theme="light"] .rich-text-editor-host .ql-toolbar.ql-snow {
    background: var(--bg-secondary);
    border-bottom-color: var(--border-subtle);
}

[data-theme="light"] .rich-text-field {
    background: var(--bg-input);
}

[data-theme="light"] .form-select.form-control-via option,
[data-theme="light"] .form-select.via-input option {
    background: #ffffff;
    color: #0f172a;
}

[data-theme="light"] .btn-outline-danger {
    border-color: rgba(220, 38, 38, 0.45);
    color: #dc2626;
}

[data-theme="light"] .btn-outline-danger:hover {
    background: rgba(220, 38, 38, 0.08);
    border-color: #dc2626;
    color: #b91c1c;
}

[data-theme="light"] .modal-content {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-subtle);
}

[data-theme="light"] .modal-header,
[data-theme="light"] .modal-footer {
    border-color: var(--border-subtle);
}

[data-theme="dark"] .modal-content {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-subtle);
}

/* === Mobile responsive audit === */

.via-card,
.via-card-body,
.filter-panel,
.report-filter-form,
.ai-builder-tabs,
.lesson-body,
.lesson-bottom-panel {
    max-width: 100%;
}

.lesson-breadcrumb .breadcrumb {
    flex-wrap: wrap;
}

.lesson-media-fallback-actions,
.lesson-pdf-viewer + .d-flex,
.lesson-presentation-viewer-note + .d-flex {
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .topbar {
        padding: 0 12px;
        gap: 8px;
    }

    .topbar-actions {
        flex-wrap: wrap;
        justify-content: flex-end;
        max-width: 100%;
        gap: 0.35rem;
    }

    .topbar-actions .btn {
        padding: 6px 10px;
        font-size: 0.82rem;
    }

    .theme-toggle-btn {
        min-width: auto;
    }

    .auth-layout {
        padding-top: 56px;
    }

    .auth-theme-bar {
        top: 12px;
        right: 12px;
    }

    .rich-text-editor-host .ql-container.ql-snow,
    .rich-text-editor-host .ql-editor {
        min-height: 220px;
    }

    .rich-text-image-resize-bar {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .lesson-quiz-panel-actions,
    .lesson-quiz-panel-actions .btn {
        width: 100%;
    }

    .lesson-quiz-panel-actions .btn {
        justify-content: center;
    }

    .question-card .via-card-body > .d-flex.justify-content-between {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 0.5rem;
    }

    .quiz-card .d-flex.gap-2,
    .form-actions,
    .course-actions {
        flex-wrap: wrap;
    }

    .readiness-list li {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

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

@media (max-width: 576px) {
    .lesson-pdf-viewer {
        min-height: 380px;
    }

    .lesson-pdf-viewer iframe,
    .lesson-pdf-viewer object,
    .lesson-pdf-viewer embed {
        height: 380px;
    }

    .lesson-presentation-viewer {
        min-height: 220px;
    }

    .lesson-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .lesson-actions-nav,
    .lesson-actions-primary {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }

    .lesson-actions-primary {
        margin-left: 0;
    }

    .lesson-actions .btn,
    .lesson-actions form,
    .lesson-actions .alert {
        width: 100%;
    }

    .lesson-actions form .btn {
        width: 100%;
    }

    .breadcrumb-via {
        font-size: 0.82rem;
    }

    .report-filter-form .col-md-4,
    .report-filter-form .col-md-3,
    .report-filter-form .col-lg-3,
    .report-filter-form .col-lg-2 {
        width: 100%;
    }

    .report-filter-form .btn {
        width: 100%;
    }

    #lesson-form .col-md-6,
    #lesson-form .col-md-4,
    #lesson-form .col-md-3 {
        width: 100%;
    }

    .ai-builder-tab {
        flex: 1 1 calc(50% - 0.5rem);
        justify-content: center;
        text-align: center;
    }

    .modal-dialog {
        max-width: calc(100vw - 1rem);
        margin: 0.5rem auto;
    }

    .assign-type-cards {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 430px) {
    .content-area {
        padding: 12px;
    }

    .topbar-title {
        font-size: 1rem;
    }

    .lesson-pdf-viewer {
        min-height: 300px;
    }

    .lesson-pdf-viewer iframe,
    .lesson-pdf-viewer object,
    .lesson-pdf-viewer embed {
        height: 300px;
    }

    .lesson-presentation-viewer {
        min-height: 190px;
    }

    .login-card {
        padding: 20px;
    }

    .gauge-ring {
        width: 96px;
        height: 96px;
    }

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

/* AI Instructor Mode */
.lesson-player-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
        "main"
        "actions";
    gap: 20px;
    align-items: start;
}

.lesson-player-layout.has-ai-instructor,
.lesson-player-layout.lesson-player-layout-with-instructor {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
    grid-template-areas:
        "main sidebar"
        "actions sidebar";
}

.lesson-player-main {
    grid-area: main;
    min-width: 0;
}

.lesson-bottom-panel {
    grid-area: actions;
}

.lesson-content-section-header h2,
.lesson-content-section-header .h5 {
    color: var(--text-primary);
}

.lesson-content-section-header p {
    max-width: 70ch;
}

.lesson-supporting-materials {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.lesson-supporting-item + .lesson-supporting-item {
    padding-top: 0.25rem;
    border-top: 1px solid var(--border-subtle);
}

.lesson-supporting-item-title {
    margin-bottom: 0.85rem;
    color: var(--text-primary);
    font-weight: 600;
}

.lesson-supporting-item .lesson-video-stage {
    margin-bottom: 0;
}

.lesson-instructor-sidebar {
    grid-area: sidebar;
    min-width: 0;
    position: sticky;
    top: 1rem;
}

.lesson-instructor-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.lesson-avatar-slot {
    margin-bottom: 0.75rem;
}

.lesson-text-ai-response {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 0.75rem;
}

.lesson-ai-instructor-card {
    display: flex;
    flex-direction: column;
    max-height: 620px;
    min-height: 320px;
    padding: 0 !important;
}

.lesson-ai-instructor-header {
    flex-shrink: 0;
    padding: 1rem 1rem 0.5rem;
}

.lesson-ai-instructor-helper {
    flex-shrink: 0;
    padding: 0 1rem 0.75rem;
}

.lesson-ai-messages {
    flex: 1 1 auto;
    overflow-y: auto;
    min-height: 160px;
    padding: 0.25rem 1rem 0.75rem;
    padding-right: calc(1rem - 4px);
    scrollbar-width: thin;
}

.lesson-ai-messages-empty {
    margin: 0.5rem 0 0;
}

.lesson-ai-input-area {
    flex-shrink: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0.75rem 1rem 1rem;
    background: var(--via-card-bg);
}

.lesson-ai-message {
    margin-bottom: 0.85rem;
}

.lesson-ai-message:last-child {
    margin-bottom: 0;
}

.lesson-ai-message-label {
    display: block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 0.35rem;
    color: var(--text-muted);
}

.lesson-ai-message.user .lesson-ai-message-label {
    color: var(--cyan);
}

.lesson-ai-message-body {
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 0.75rem 0.85rem;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    line-height: 1.6;
    word-break: break-word;
}

.lesson-ai-message.user .lesson-ai-message-body {
    border-color: rgba(0, 212, 255, 0.22);
    background: rgba(0, 212, 255, 0.06);
}

.lesson-ai-message.assistant .lesson-ai-message-body {
    border-color: rgba(255, 255, 255, 0.1);
}

.lesson-ai-message.assistant .lesson-ai-message-body.guided-instructor-speech ol,
.lesson-ai-message.assistant .lesson-ai-message-body.guided-instructor-speech ul {
    margin-bottom: 0.75rem;
    padding-left: 1.25rem;
}

.lesson-ai-message--error .lesson-ai-message-body {
    border-color: rgba(255, 193, 7, 0.35);
    background: rgba(255, 193, 7, 0.08);
    color: var(--text-primary);
}

@media (max-width: 992px) {
    .lesson-ai-instructor-card {
        max-height: min(560px, 62vh);
        min-height: 280px;
    }
}

.lesson-player-main {
    min-width: 0;
}

.lesson-player-main .lesson-body {
    margin-bottom: 0;
}

.ai-instructor-panel {
    background: var(--via-card-bg);
    border: 1px solid var(--via-border);
    border-radius: var(--via-radius-lg);
    padding: 16px;
    min-width: 0;
}

.ai-instructor-panel-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.ai-instructor-eyebrow {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--via-cyan);
    margin-bottom: 4px;
}

.ai-instructor-title {
    font-size: 1.1rem;
    margin: 0 0 6px;
}

.ai-instructor-objective {
    margin: 0;
    color: var(--via-text-muted);
    font-size: 0.9rem;
}

.ai-instructor-slide-card {
    background: var(--via-surface-muted);
    border: 1px solid var(--via-border);
    border-radius: var(--via-radius-md);
    padding: 12px;
    margin-bottom: 12px;
}

.ai-instructor-slide-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--via-text-muted);
    margin-bottom: 6px;
}

.ai-instructor-slide-title {
    font-size: 1rem;
    margin: 0 0 8px;
}

.ai-instructor-slide-notes {
    font-size: 0.9rem;
    color: var(--via-text-muted);
    margin-bottom: 8px;
}

.ai-instructor-step-list {
    margin: 0;
    padding-left: 18px;
}

.ai-instructor-step-list li.is-current {
    color: var(--via-cyan);
    font-weight: 600;
}

.ai-instructor-nav,
.ai-instructor-quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.ai-instructor-chat-log {
    max-height: 260px;
    overflow-y: auto;
    border: 1px solid var(--via-border);
    border-radius: var(--via-radius-md);
    padding: 10px;
    margin-bottom: 10px;
    background: var(--via-surface-muted);
}

.ai-instructor-message {
    margin-bottom: 10px;
}

.ai-instructor-message-role {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--via-cyan);
    margin-bottom: 2px;
}

.ai-instructor-message-content {
    font-size: 0.92rem;
    white-space: pre-wrap;
}

.ai-instructor-chat-form {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
    align-items: end;
}

.ai-instructor-loading {
    font-size: 0.85rem;
    color: var(--via-text-muted);
    margin-top: 8px;
}

.ai-instructor-disclaimer {
    font-size: 0.8rem;
    color: var(--via-text-muted);
    margin: 12px 0 0;
}

.ai-instructor-panel-body.is-collapsed {
    display: none;
}

@media (max-width: 992px) {
    .lesson-player-layout,
    .lesson-player-layout.has-ai-instructor,
    .lesson-player-layout.lesson-player-layout-with-instructor {
        grid-template-columns: 1fr;
        grid-template-areas:
            "main"
            "sidebar"
            "actions";
    }

    .lesson-instructor-sidebar {
        position: static;
    }
}