/* S² Learning Hub - Web Styles (S² Arts Lab brand) */

:root {
    /* Brand tokens — aligned with s2_artslab_brand.dart */
    --primary-color: #A78BFA;
    --primary-hover: #8B5CF6;
    --secondary-color: #22D3EE;
    --secondary-deep: #0891B2;
    --accent-orange: #FB923C;
    --success-color: #34D399;
    --warning-color: #FBBF24;
    --danger-color: #F87171;

    --dark-bg: #07080F;
    --dark-surface: #0F111A;
    --dark-surface-2: #151822;
    --dark-border: rgba(255, 255, 255, 0.1);
    --glass-bg: rgba(15, 17, 26, 0.72);
    --glass-border: rgba(255, 255, 255, 0.08);

    --text-primary: #F4F6FB;
    --text-secondary: rgba(244, 246, 251, 0.68);
    --text-muted: rgba(244, 246, 251, 0.58);

    --border-radius: 16px;
    --border-radius-lg: 20px;
    --border-radius-xl: 28px;

    --shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.35);
    --glow-purple: 0 0 40px rgba(167, 139, 250, 0.25);
    --glow-cyan: 0 0 32px rgba(34, 211, 238, 0.2);

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --nav-height: 72px;
    --s2-beta-bar-height: 0px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(145deg, var(--dark-bg) 0%, var(--dark-surface) 45%, var(--dark-surface-2) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    position: relative;
    overflow-x: hidden;
}

/* Cosmic background orbs */
.cosmic-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.cosmic-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.45;
    animation: floatOrb 20s ease-in-out infinite;
}

.cosmic-orb-1 {
    width: 480px;
    height: 480px;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.35) 0%, transparent 70%);
    top: -120px;
    right: -80px;
}

.cosmic-orb-2 {
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.22) 0%, transparent 70%);
    bottom: 10%;
    left: -100px;
    animation-delay: -7s;
}

.cosmic-orb-3 {
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, rgba(251, 146, 60, 0.15) 0%, transparent 70%);
    top: 40%;
    right: 20%;
    animation-delay: -14s;
}

@keyframes floatOrb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(20px, -30px) scale(1.05); }
    66% { transform: translate(-15px, 20px) scale(0.95); }
}

#app {
    position: relative;
    z-index: 1;
}

/* Navigation — sticky glassmorphism */
.navbar {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid var(--glass-border);
    padding: 0;
    position: sticky;
    top: var(--s2-beta-bar-height, 0px);
    z-index: 200;
    transition: box-shadow var(--transition-smooth), top var(--transition-fast);
}

.navbar.scrolled {
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
    min-height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    flex-shrink: 0;
}

.nav-brand i {
    font-size: 1.75rem;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-toggle:hover {
    background: rgba(167, 139, 250, 0.15);
    border-color: rgba(167, 139, 250, 0.3);
}

/* Always-visible Learning shortcut — especially on mobile when menu is collapsed */
.nav-learning-quick {
    display: none;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 0.85rem;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.82rem;
    color: var(--text-primary);
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.18), rgba(167, 139, 250, 0.28));
    border: 1px solid rgba(167, 139, 250, 0.45);
    box-shadow: var(--glow-purple);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.nav-learning-quick:hover,
.nav-learning-quick.active {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.28), rgba(167, 139, 250, 0.38));
    border-color: rgba(167, 139, 250, 0.6);
    color: #fff;
}

.nav-menu {
    display: flex;
    gap: 0.35rem;
    align-items: center;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    font-weight: 500;
    font-size: 0.9rem;
    border: 1px solid transparent;
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--glass-border);
}

.nav-link.active {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.15), rgba(167, 139, 250, 0.2));
    color: var(--text-primary);
    border-color: rgba(167, 139, 250, 0.35);
    box-shadow: var(--glow-purple);
}

.nav-link--learning {
    position: relative;
    border-color: rgba(167, 139, 250, 0.25);
    background: rgba(167, 139, 250, 0.08);
}

.nav-link-badge {
    margin-left: 0.15rem;
    padding: 0.12rem 0.45rem;
    border-radius: 999px;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--secondary-color);
    background: rgba(34, 211, 238, 0.12);
    border: 1px solid rgba(34, 211, 238, 0.35);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    box-shadow: var(--glow-purple);
}

/* Main Content */
.main-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
}

.screen {
    display: none;
    animation: fadeIn 0.4s ease;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Dashboard Hero */
.dashboard-hero {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 2rem;
    align-items: center;
    margin-bottom: 2.5rem;
    padding: 2rem 2.25rem;
    border-radius: var(--border-radius-xl);
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.08) 0%, rgba(167, 139, 250, 0.12) 50%, rgba(251, 146, 60, 0.06) 100%);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-lg), var(--glow-purple);
    position: relative;
    overflow: hidden;
}

.dashboard-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 80% 20%, rgba(167, 139, 250, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.85rem;
    background: rgba(167, 139, 250, 0.15);
    border: 1px solid rgba(167, 139, 250, 0.3);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.hero-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 0.75rem;
    color: #FFFFFF;
    background: linear-gradient(135deg, #FFFFFF 0%, #A5F3FC 38%, #DDD6FE 72%, #FED7AA 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 18px rgba(255, 255, 255, 0.22)) drop-shadow(0 2px 6px rgba(0, 0, 0, 0.35));
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 540px;
    margin-bottom: 1.25rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.75rem;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.85rem 1.25rem;
    border-radius: 14px;
    border: 1px solid transparent;
    font: inherit;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.hero-cta-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    box-shadow: var(--glow-cyan), var(--glow-purple);
}

.hero-cta-primary:hover {
    transform: translateY(-1px);
    filter: brightness(1.06);
}

.hero-cta-secondary {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--glass-border);
}

.hero-cta-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(167, 139, 250, 0.35);
}

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    padding: 0.75rem 1.25rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    min-width: 90px;
    transition: all var(--transition-fast);
}

.hero-stat:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(167, 139, 250, 0.25);
    transform: translateY(-2px);
}

.hero-stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
}

.hero-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 0.15rem;
}

.hero-visual {
    position: relative;
    width: 140px;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.hero-visual-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 2px solid rgba(167, 139, 250, 0.3);
    animation: pulseRing 3s ease-in-out infinite;
}

.hero-visual-icon {
    font-size: 3.5rem;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 20px rgba(167, 139, 250, 0.4));
}

@keyframes pulseRing {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.08); opacity: 1; }
}

.screen-header {
    margin-bottom: 2rem;
}

.screen-header h1 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.screen-header p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Cards — glass effect */
.card {
    background: rgba(15, 17, 26, 0.65);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: all var(--transition-smooth);
}

.card:hover {
    box-shadow: var(--shadow-lg), var(--glow-purple);
    transform: translateY(-3px);
    border-color: rgba(167, 139, 250, 0.2);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.card-header i {
    font-size: 1.25rem;
    color: var(--secondary-color);
}

.card-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 0 2rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

/* Prominent Learning gateway — primary path to courses & CEU */
.dashboard-learning-gateway {
    margin: 0 2rem 1.5rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0;
    overflow: hidden;
    border: 1px solid rgba(167, 139, 250, 0.35);
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.08) 0%, rgba(167, 139, 250, 0.14) 55%, rgba(251, 146, 60, 0.06) 100%);
    box-shadow: var(--shadow-lg), var(--glow-purple);
}

.learning-gateway-inner {
    display: grid;
    grid-template-columns: 1.4fr auto;
    gap: 1.5rem;
    align-items: center;
    padding: 1.5rem 1.75rem;
}

.learning-gateway-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.5rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--secondary-color);
}

.learning-gateway-copy h2 {
    font-size: clamp(1.25rem, 3vw, 1.65rem);
    font-weight: 800;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.learning-gateway-lead {
    color: var(--text-secondary);
    line-height: 1.55;
    max-width: 42rem;
    margin-bottom: 0.85rem;
}

.learning-gateway-lead strong {
    color: var(--primary-color);
}

.learning-gateway-points {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem 1.25rem;
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.learning-gateway-points li {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.learning-gateway-points i {
    color: var(--secondary-color);
}

.learning-gateway-actions {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.65rem;
    min-width: min(100%, 16rem);
}

.learning-gateway-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    padding: 1rem 1.35rem;
    border: none;
    border-radius: 14px;
    font: inherit;
    font-weight: 700;
    font-size: 1rem;
    color: #fff;
    cursor: pointer;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    box-shadow: var(--glow-cyan);
    transition: all var(--transition-fast);
}

.learning-gateway-btn:hover {
    transform: translateY(-1px);
    filter: brightness(1.06);
}

.learning-gateway-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.45;
    text-align: center;
}

.dashboard-continue-primary {
    margin: 0 2rem 1.5rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    border-color: rgba(167, 139, 250, 0.28);
    background: linear-gradient(135deg, rgba(167, 139, 250, 0.1) 0%, rgba(34, 211, 238, 0.06) 100%);
}

.dashboard-continue-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 0.85rem;
}

.dashboard-continue-card {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    padding: 1rem 1.1rem;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.04);
    text-decoration: none;
    color: inherit;
    transition: border-color 0.15s ease, transform 0.15s ease, background 0.15s ease;
}

.dashboard-continue-card:hover {
    border-color: rgba(167, 139, 250, 0.45);
    background: rgba(167, 139, 250, 0.08);
    transform: translateY(-2px);
}

.dashboard-continue-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
}

.dashboard-continue-card-head strong {
    font-size: 1rem;
    line-height: 1.35;
}

.dashboard-continue-resume {
    flex-shrink: 0;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--primary-color);
}

.dashboard-continue-meta {
    margin: 0;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.dashboard-continue-bar {
    margin-top: 0.15rem;
}

.dashboard-continue-intro,
.dashboard-continue-foot {
    margin: 0 0 0.75rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.dashboard-continue-foot {
    margin-top: 0.85rem;
    margin-bottom: 0;
}

.dashboard-inline-link {
    padding: 0;
    border: none;
    background: none;
    color: var(--primary-color);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline;
}

.dashboard-explore-links {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.dashboard-explore-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.65rem 0.75rem;
    border-radius: 10px;
    border: 1px solid transparent;
    background: rgba(255, 255, 255, 0.03);
    color: inherit;
    text-decoration: none;
    text-align: left;
    cursor: pointer;
    font: inherit;
    transition: background 0.15s ease, border-color 0.15s ease;
}

.dashboard-explore-link:hover {
    background: rgba(167, 139, 250, 0.1);
    border-color: rgba(167, 139, 250, 0.25);
}

.dashboard-explore-link i {
    width: 1.25rem;
    text-align: center;
    color: var(--secondary-color);
}

.dashboard-explore-link span {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.dashboard-explore-link strong {
    font-size: 0.92rem;
}

.dashboard-explore-link small {
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.dashboard-explore-link-compact {
    margin-top: 0.5rem;
}

.dashboard-explore-note {
    margin: 0.75rem 0 0;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.explore-card {
    border-color: rgba(34, 211, 238, 0.2);
}

.ai-access-card {
    grid-column: 1 / -1;
}

.ai-access-lead {
    margin: 0 0 0.65rem;
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

.ai-access-status {
    margin: 0 0 0.75rem;
    font-size: 0.85rem;
    font-weight: 600;
}

.ai-access-details {
    margin-top: 0.5rem;
}

.ai-access-details summary {
    cursor: pointer;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.ai-access-details label,
.ai-access-details input {
    display: block;
    width: 100%;
    margin-bottom: 0.65rem;
}

.ai-access-highlight {
    outline: 2px solid rgba(167, 139, 250, 0.55);
    outline-offset: 2px;
}

#dashboard .dashboard-hero {
    margin: 0 2rem 1.5rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

/* Status Card */
.status-card {
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.2) 0%, rgba(167, 139, 250, 0.25) 100%);
    color: var(--text-primary);
    border: 1px solid rgba(167, 139, 250, 0.25);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.status-dot {
    width: 12px;
    height: 12px;
    background: var(--success-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.status-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.status-value {
    font-weight: 600;
    color: var(--success-color);
}

/* Progress Card */
.progress-item {
    margin-bottom: 1rem;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--dark-border);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
    border-radius: 4px;
    transition: width var(--transition-smooth);
    box-shadow: 0 0 12px rgba(167, 139, 250, 0.4);
}

/* Teachers Card */
.teachers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.teacher-item {
    text-align: center;
    padding: 1rem;
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-smooth);
}

.teacher-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--glow-purple);
    border-color: rgba(167, 139, 250, 0.25);
}

.teacher-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.teacher-avatar.math { background: var(--warning-color); }
.teacher-avatar.language { background: var(--success-color); }
.teacher-avatar.tech { background: var(--secondary-color); }
.teacher-avatar.art { background: var(--danger-color); }

.teacher-info h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.teacher-info p {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Action Buttons */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    text-align: center;
}

.action-btn.primary {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-deep));
    color: var(--dark-bg);
    box-shadow: var(--glow-cyan);
}

.action-btn.primary:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: var(--glow-purple);
}

.action-btn.secondary {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.action-btn.secondary:hover {
    background: rgba(167, 139, 250, 0.12);
    border-color: rgba(167, 139, 250, 0.3);
    transform: translateY(-2px);
}

/* Learning Content */
.learning-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.subjects-section h2,
.recent-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.subjects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.subject-card {
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--glass-border);
    background: rgba(15, 17, 26, 0.5);
    backdrop-filter: blur(8px);
    transition: all var(--transition-smooth);
    cursor: pointer;
}

.subject-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), var(--glow-purple);
    border-color: rgba(167, 139, 250, 0.25);
}

.subject-card.math { border-left: 4px solid var(--warning-color); }
.subject-card.language { border-left: 4px solid var(--success-color); }
.subject-card.tech { border-left: 4px solid var(--secondary-color); }
.subject-card.history { border-left: 4px solid var(--danger-color); }
.subject-card.art { border-left: 4px solid var(--danger-color); }
.subject-card.business { border-left: 4px solid var(--primary-color); }

.subject-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.subject-card.math .subject-icon { background: var(--warning-color); }
.subject-card.language .subject-icon { background: var(--success-color); }
.subject-card.tech .subject-icon { background: var(--secondary-color); }
.subject-card.history .subject-icon { background: var(--danger-color); }
.subject-card.art .subject-icon { background: var(--danger-color); }
.subject-card.business .subject-icon { background: var(--primary-color); }

.subject-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.subject-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.card-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}

.card-title-row h3 {
    margin: 0;
    flex: 1;
}

.course-search-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    margin: 1rem 0 1.25rem;
    padding: 0.75rem 1rem;
    background: var(--card-bg, rgba(255, 255, 255, 0.04));
    border-radius: 10px;
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.08));
}

.course-search-bar input[type="search"],
.course-search-bar select {
    flex: 1;
    min-width: 160px;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
    background: var(--input-bg, rgba(0, 0, 0, 0.2));
    color: inherit;
}

.ceu-filter-toggle {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
}

.ceu-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 600;
    background: rgba(34, 197, 94, 0.15);
    color: var(--success-color, #22c55e);
    border: 1px solid rgba(34, 197, 94, 0.35);
    white-space: nowrap;
}

.ceu-badge-compact {
    font-size: 0.68rem;
    padding: 0.1rem 0.4rem;
}

.ceu-course-banner {
    margin: 0.75rem 0;
    padding: 0.6rem 0.85rem;
    border-radius: 8px;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.25);
    color: var(--text-primary);
    font-size: 0.92rem;
}

.ceu-directory-intro {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.external-provider {
    font-size: 0.85rem;
    color: var(--primary-color);
    margin-bottom: 0.35rem;
}

.external-link-hint,
.ceu-accreditors {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.ceu-data-sources {
    margin-top: 1.25rem;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.ceu-data-sources summary {
    cursor: pointer;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.ceu-data-sources ul {
    margin: 0.5rem 0 0;
    padding-left: 1.25rem;
}

.ceu-data-sources li {
    margin-bottom: 0.35rem;
}

.live-delivery-panel {
    margin: 0.75rem 0 1rem;
    padding: 0.85rem 1rem;
    border-radius: 10px;
    border: 1px solid rgba(139, 92, 246, 0.25);
    background: rgba(139, 92, 246, 0.08);
}

.delivery-mode-badge {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.live-session-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.live-session-card {
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--border-color, rgba(255,255,255,0.1));
    background: rgba(0,0,0,0.15);
}

.live-session-card.live-session-active {
    border-color: rgba(34, 197, 94, 0.4);
}

.live-jitsi-embed {
    width: 100%;
    min-height: 360px;
    margin-top: 0.75rem;
    border: 0;
    border-radius: 8px;
    background: #1a1a2e;
}

.live-session-actions .btn-primary.disabled {
    opacity: 0.45;
    pointer-events: none;
}

.live-hint {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.cert-ceu {
    margin: 0.75rem 0;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    background: rgba(34, 197, 94, 0.12);
    border: 1px solid rgba(34, 197, 94, 0.3);
    font-size: 0.9rem;
}

.ceu-sync-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.subject-stats {
    display: flex;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Recent Learning */
.recent-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.recent-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(15, 17, 26, 0.55);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-fast);
}

.recent-item:hover {
    border-color: rgba(167, 139, 250, 0.2);
}

.recent-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.recent-icon.math { background: var(--warning-color); }
.recent-icon.tech { background: var(--secondary-color); }

.recent-content {
    flex: 1;
}

.recent-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.recent-content p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.recent-progress {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.recent-progress .progress-bar {
    flex: 1;
    height: 6px;
}

.continue-btn {
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: var(--text-primary);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.continue-btn:hover {
    box-shadow: var(--glow-purple);
    transform: translateY(-2px);
}

/* VR Content */
.vr-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.vr-status-card {
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.2) 0%, rgba(34, 211, 238, 0.15) 100%);
    color: var(--text-primary);
    border: 1px solid rgba(52, 211, 153, 0.25);
    backdrop-filter: blur(12px);
}

.vr-status-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.vr-status-header i {
    font-size: 1.5rem;
}

.vr-features {
    display: flex;
    gap: 2rem;
    margin-top: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.environments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.environment-card {
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--glass-border);
    background: rgba(15, 17, 26, 0.5);
    backdrop-filter: blur(8px);
    text-align: center;
    transition: all var(--transition-smooth);
    cursor: pointer;
}

.environment-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), var(--glow-cyan);
    border-color: rgba(34, 211, 238, 0.25);
}

.environment-preview {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1rem;
    color: var(--text-primary);
}

.environment-card.science .environment-preview { background: var(--warning-color); }
.environment-card.history .environment-preview { background: var(--danger-color); }
.environment-card.language .environment-preview { background: var(--success-color); }
.environment-card.art .environment-preview { background: var(--primary-color); }

.environment-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.environment-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.environment-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    justify-content: center;
}

.environment-features span {
    padding: 0.25rem 0.75rem;
    background: var(--dark-bg);
    border-radius: 12px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.enter-vr-btn {
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-deep));
    color: var(--dark-bg);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.enter-vr-btn:hover {
    box-shadow: var(--glow-cyan);
    transform: translateY(-2px);
}

/* Progress Content */
.progress-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.progress-overview {
    display: flex;
    justify-content: center;
}

.overview-card {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(34, 211, 238, 0.12) 0%, rgba(167, 139, 250, 0.18) 100%);
    border: 1px solid rgba(167, 139, 250, 0.2);
    border-radius: var(--border-radius-xl);
    color: var(--text-primary);
    max-width: 600px;
    width: 100%;
    backdrop-filter: blur(12px);
    box-shadow: var(--glow-purple);
}

.overview-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.overview-stats {
    display: flex;
    gap: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

.detailed-progress h2,
.achievements h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.progress-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.progress-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(15, 17, 26, 0.55);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-fast);
}

.progress-item:hover {
    border-color: rgba(167, 139, 250, 0.2);
}

.progress-subject {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.progress-subject .subject-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.progress-subject .subject-icon.math { background: var(--warning-color); }
.progress-subject .subject-icon.tech { background: var(--secondary-color); }
.progress-subject .subject-icon.language { background: var(--success-color); }

.subject-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.subject-info p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.progress-details {
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 200px;
}

.progress-details .progress-bar {
    flex: 1;
    height: 8px;
}

.progress-percentage {
    font-weight: 600;
    color: var(--primary-color);
    min-width: 40px;
    text-align: right;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.achievement-item {
    padding: 1.5rem;
    background: rgba(15, 17, 26, 0.55);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    text-align: center;
    transition: all var(--transition-smooth);
}

.achievement-item.earned {
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.2) 0%, rgba(34, 211, 238, 0.12) 100%);
    color: var(--text-primary);
    border: 1px solid rgba(52, 211, 153, 0.3);
    box-shadow: var(--glow-cyan);
}

.achievement-item:not(.earned) {
    opacity: 0.5;
}

.achievement-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1rem;
    background: var(--primary-color);
    color: var(--text-primary);
}

.achievement-item.earned .achievement-icon {
    background: rgba(255, 255, 255, 0.2);
}

.achievement-item h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.achievement-item p {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Mentorship Styles */
.mentorship-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--dark-border);
}

.tab-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
    font-weight: 500;
}

.tab-button:hover,
.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Search and Filters */
.search-section {
    margin-bottom: 2rem;
}

.search-bar {
    position: relative;
    margin-bottom: 1rem;
}

.search-bar i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-bar input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    background: rgba(15, 17, 26, 0.6);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.search-bar input:focus {
    outline: none;
    border-color: rgba(167, 139, 250, 0.4);
    box-shadow: var(--glow-purple);
}

.filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.filters select {
    padding: 0.75rem 1rem;
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    min-width: 150px;
}

/* Mentors Grid */
.mentors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.mentor-card {
    background: rgba(15, 17, 26, 0.65);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    transition: all var(--transition-smooth);
}

.mentor-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), var(--glow-purple);
    border-color: rgba(167, 139, 250, 0.25);
}

.mentor-image {
    text-align: center;
    margin-bottom: 1rem;
}

.mentor-image img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
}

.mentor-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-align: center;
}

.mentor-specialty {
    color: var(--primary-color);
    font-weight: 600;
    text-align: center;
    margin-bottom: 1rem;
}

.mentor-rating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.stars {
    color: var(--warning-color);
    font-size: 1.1rem;
}

.rating-count {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.mentor-details {
    margin-bottom: 1rem;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.mentor-subjects {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.subject-tag {
    padding: 0.25rem 0.75rem;
    background: var(--primary-color);
    color: var(--text-primary);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.mentor-session-types {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.session-type-tag {
    padding: 0.25rem 0.75rem;
    background: var(--dark-bg);
    color: var(--text-primary);
    border: 1px solid var(--dark-border);
    border-radius: 12px;
    font-size: 0.75rem;
    text-transform: capitalize;
}

.mentor-actions {
    display: flex;
    gap: 0.75rem;
}

.mentor-actions .action-btn {
    flex: 1;
    justify-content: center;
}

/* Sessions List */
.sessions-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.session-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem;
    background: rgba(15, 17, 26, 0.55);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-fast);
}

.session-info {
    flex: 1;
}

.session-mentor h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.session-mentor p {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.session-details {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 0.75rem;
}

.session-details > div {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.session-notes {
    margin-bottom: 0.75rem;
}

.session-notes p {
    color: var(--text-muted);
    font-style: italic;
}

.session-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.session-status {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.75rem;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-badge.scheduled {
    background: var(--warning-color);
    color: var(--text-primary);
}

.status-badge.completed {
    background: var(--success-color);
    color: var(--text-primary);
}

.status-badge.cancelled {
    background: var(--danger-color);
    color: var(--text-primary);
}

/* Collaborations Grid */
.collaborations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 1.5rem;
}

.collaboration-card {
    background: rgba(15, 17, 26, 0.65);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    transition: all var(--transition-smooth);
}

.collaboration-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), var(--glow-purple);
    border-color: rgba(167, 139, 250, 0.25);
}

.collaboration-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.collaboration-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.project-type {
    padding: 0.25rem 0.75rem;
    background: var(--primary-color);
    color: var(--text-primary);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.collaboration-description {
    margin-bottom: 1rem;
}

.collaboration-description p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.collaboration-details {
    margin-bottom: 1rem;
}

.detail-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.collaboration-progress {
    margin-bottom: 1rem;
}

.collaboration-progress .progress-bar {
    height: 8px;
    background: var(--dark-border);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.collaboration-progress .progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
    border-radius: 4px;
    transition: width var(--transition-smooth);
    box-shadow: 0 0 12px rgba(167, 139, 250, 0.4);
}

.progress-text {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.collaboration-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.skill-tag {
    padding: 0.25rem 0.75rem;
    background: var(--dark-bg);
    color: var(--text-primary);
    border: 1px solid var(--dark-border);
    border-radius: 12px;
    font-size: 0.75rem;
}

.collaboration-roles {
    margin-bottom: 1.5rem;
}

.collaboration-roles h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.collaboration-roles ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.collaboration-roles li {
    padding: 0.25rem 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.collaboration-roles li:before {
    content: "•";
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.collaboration-actions {
    display: flex;
    gap: 0.75rem;
}

.collaboration-actions .action-btn {
    flex: 1;
    justify-content: center;
}

/* VR Spaces Grid */
.vr-spaces-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.vr-space-card {
    background: rgba(15, 17, 26, 0.65);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    transition: all var(--transition-smooth);
}

.vr-space-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), var(--glow-cyan);
    border-color: rgba(34, 211, 238, 0.25);
}

.vr-space-icon {
    text-align: center;
    margin-bottom: 1rem;
}

.space-icon {
    font-size: 3rem;
    display: block;
}

.vr-space-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-align: center;
}

.vr-space-info p {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.vr-space-details {
    margin-bottom: 1rem;
}

.vr-space-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    justify-content: center;
}

.feature-tag {
    padding: 0.25rem 0.75rem;
    background: var(--success-color);
    color: var(--text-primary);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.vr-space-actions {
    display: flex;
    gap: 0.75rem;
}

.vr-space-actions .action-btn {
    flex: 1;
    justify-content: center;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    overflow-y: auto;
}

.modal-content {
    background: rgba(15, 17, 26, 0.95);
    backdrop-filter: blur(20px);
    margin: 2% auto;
    padding: 0;
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-xl);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg), var(--glow-purple);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--dark-border);
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.close-button {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.close-button:hover {
    background: var(--dark-border);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.mentor-profile {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.mentor-image img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
}

.mentor-details {
    flex: 1;
}

.mentor-details > div {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.specialty-tag {
    padding: 0.25rem 0.75rem;
    background: var(--primary-color);
    color: var(--text-primary);
    border-radius: 12px;
    font-size: 0.75rem;
    margin-right: 0.5rem;
}

.mentor-bio,
.mentor-certifications,
.mentor-reviews {
    margin-bottom: 2rem;
}

.mentor-bio h3,
.mentor-certifications h3,
.mentor-reviews h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.mentor-certifications ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mentor-certifications li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--dark-border);
}

.mentor-certifications li:last-child {
    border-bottom: none;
}

.review-item {
    padding: 1rem;
    background: var(--dark-bg);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.reviewer-name {
    font-weight: 600;
    color: var(--text-primary);
}

.review-rating {
    color: var(--warning-color);
}

.review-comment {
    color: var(--text-secondary);
    line-height: 1.6;
}

.mentor-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 1rem;
}

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

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .dashboard-hero {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
        flex-wrap: wrap;
    }

    .nav-learning-quick {
        display: inline-flex;
        order: 2;
        margin-left: auto;
    }

    .nav-toggle {
        display: flex;
        order: 3;
        margin-left: 0.35rem;
    }

    .nav-brand {
        order: 1;
    }

    .nav-user {
        order: 4;
    }

    .nav-menu {
        display: none;
        order: 5;
        width: 100%;
        flex-direction: column;
        gap: 0.25rem;
        padding: 0.75rem 0 1rem;
        border-top: 1px solid var(--glass-border);
        margin-top: 0.5rem;
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-link {
        width: 100%;
        padding: 0.85rem 1rem;
        justify-content: flex-start;
    }

    .nav-link span {
        display: inline;
    }

    .main-content {
        padding: 1.25rem 1rem 2rem;
    }

    .dashboard-hero {
        padding: 1.5rem 1.25rem;
    }

    .hero-stats {
        gap: 0.75rem;
    }

    .hero-stat {
        min-width: calc(50% - 0.5rem);
        flex: 1;
    }

    .screen-header h1 {
        font-size: 1.75rem;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }

    .dashboard-continue-primary,
    .dashboard-learning-gateway,
    #dashboard .dashboard-hero {
        margin-left: 1rem;
        margin-right: 1rem;
    }

    .learning-gateway-inner {
        grid-template-columns: 1fr;
        padding: 1.25rem 1.15rem;
    }

    .learning-gateway-actions {
        min-width: 0;
    }

    .hero-actions {
        justify-content: center;
    }

    .dashboard-continue-grid {
        grid-template-columns: 1fr;
    }

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

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

    .overview-card {
        flex-direction: column;
        text-align: center;
    }

    .overview-stats {
        justify-content: center;
    }

    .progress-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .progress-details {
        width: 100%;
        min-width: auto;
    }

    .mentorship-tabs {
        flex-wrap: wrap;
    }

    .tab-button {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }

    .tab-button span {
        display: none;
    }

    .filters {
        flex-direction: column;
    }

    .filters select {
        min-width: auto;
    }

    .mentors-grid,
    .collaborations-grid,
    .vr-spaces-grid {
        grid-template-columns: 1fr;
    }

    .session-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .session-status {
        align-items: flex-start;
        width: 100%;
    }

    .session-details {
        flex-direction: column;
        gap: 0.5rem;
    }

    .mentor-profile {
        flex-direction: column;
        text-align: center;
    }

    .modal-content {
        width: 95%;
        margin: 5% auto;
    }

    .form-actions {
        flex-direction: column;
    }
}

/* Live data panels (de-mocked shell) */
.live-loading,
.live-empty,
.live-meta {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.live-empty {
    padding: 0.5rem 0;
}

.live-discussion-card .card-header i {
    color: #60a5fa;
}

.live-room-discovery-list {
    list-style: none;
    margin: 0.5rem 0 0;
    padding: 0;
}

.live-room-discovery-item {
    margin-bottom: 0.5rem;
}

.live-room-discovery-item a {
    display: block;
    padding: 0.65rem 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--dark-border);
    text-decoration: none;
    color: var(--text-primary);
}

.live-room-discovery-item a:hover {
    border-color: var(--primary-color);
    background: rgba(139, 92, 246, 0.08);
}

.live-room-discovery-item span {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.15rem;
}

.live-catalog-card {
    margin-bottom: 1.5rem;
}

.learning-catalog-host {
    padding: 0 2rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.learning-page {
    max-width: 1200px;
    margin: 0 auto;
    padding-bottom: 2rem;
}

.learning-page-header {
    padding: 2rem 2rem 0.5rem;
}

.learning-page-header h1 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
}

.learning-page-subtitle {
    margin: 0.35rem 0 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

#learning-toolbar-host {
    padding: 0 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.learning-toolbar {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    margin-bottom: 1rem;
}

.learning-search-row {
    position: relative;
}

.learning-search-icon {
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    pointer-events: none;
}

.learning-search-row input[type="search"] {
    width: 100%;
    padding: 0.65rem 0.85rem 0.65rem 2.35rem;
    border-radius: 10px;
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
    background: var(--input-bg, rgba(0, 0, 0, 0.25));
    color: inherit;
    font-size: 1rem;
}

.learning-search-row input[type="search"]:focus {
    outline: 2px solid rgba(167, 139, 250, 0.45);
    outline-offset: 1px;
}

.learning-ceu-toggle {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.learning-ceu-btn {
    flex: 1;
    min-width: 7rem;
    padding: 0.55rem 0.85rem;
    border-radius: 999px;
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.learning-ceu-btn:hover {
    border-color: rgba(167, 139, 250, 0.35);
    color: var(--text-primary);
}

.learning-ceu-btn.is-active {
    background: rgba(167, 139, 250, 0.18);
    border-color: rgba(167, 139, 250, 0.45);
    color: var(--text-primary);
}

.learning-ceu-count {
    opacity: 0.75;
    font-weight: 500;
}

.learning-catalog-panel {
    padding-top: 0.25rem;
}

.learning-results-meta {
    margin: 0 0 0.85rem;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.learning-catalog-warning {
    margin: 0 0 1rem;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    border: 1px solid rgba(251, 191, 36, 0.45);
    background: rgba(251, 191, 36, 0.1);
    color: #fde68a;
    font-size: 0.88rem;
    line-height: 1.45;
}

.learning-course-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}

.learning-course-card {
    display: flex;
    flex-direction: column;
    padding: 1.25rem;
}

.learning-course-card h3 {
    font-size: 1.05rem;
    line-height: 1.35;
}

.learning-card-source {
    display: inline-block;
    margin-bottom: 0.45rem;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: var(--text-secondary);
    opacity: 0.85;
}

.learning-catalog-empty {
    margin: 1.5rem 0;
    text-align: center;
    color: var(--text-secondary);
}

.learning-catalog-footnote {
    margin: 1.25rem 0 0;
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.learning-catalog-footnote a {
    color: var(--primary-color);
}

.external-ceu-card.learning-course-card {
    border-left: 4px solid var(--success-color, #22c55e);
}

#learning-contribute-host {
    max-width: 1200px;
    margin: 0 auto;
}

.learning-contribute-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin: 0 2rem 1.25rem;
    max-width: 1200px;
    padding: 1rem 1.15rem;
    border-radius: 12px;
    border: 1px solid rgba(167, 139, 250, 0.28);
    background: rgba(167, 139, 250, 0.08);
}

.learning-contribute-copy {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    min-width: 12rem;
}

.learning-contribute-copy strong {
    font-size: 1rem;
}

.learning-contribute-copy span {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.learning-contribute-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.learning-contribute-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.55rem 0.95rem;
    border-radius: 999px;
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.14));
    background: rgba(255, 255, 255, 0.04);
    color: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: border-color 0.15s ease, background 0.15s ease;
}

.learning-contribute-btn:hover {
    border-color: rgba(167, 139, 250, 0.45);
    background: rgba(167, 139, 250, 0.12);
}

.learning-contribute-btn-primary {
    background: rgba(167, 139, 250, 0.22);
    border-color: rgba(167, 139, 250, 0.5);
}

.learning-footnote-link {
    display: inline;
    margin-left: 0.35rem;
    padding: 0;
    border: none;
    background: none;
    color: var(--primary-color);
    font: inherit;
    cursor: pointer;
    text-decoration: underline;
}

.course-contribution-overlay {
    position: fixed;
    inset: 0;
    z-index: 10050;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    background: rgba(0, 0, 0, 0.62);
    backdrop-filter: blur(4px);
}

.course-contribution-dialog {
    position: relative;
    width: min(100%, 520px);
    max-height: min(92vh, 720px);
    overflow: auto;
    padding: 1.35rem 1.35rem 1.5rem;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: var(--card-bg, #1a1625);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
}

.course-contribution-close {
    position: absolute;
    top: 0.65rem;
    right: 0.75rem;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
}

.course-contribution-dialog h2 {
    margin: 0 2rem 0.35rem 0;
    font-size: 1.35rem;
}

.course-contribution-lead {
    margin: 0 0 1rem;
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

.course-contribution-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.course-contribution-tab {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.55rem 0.75rem;
    border-radius: 10px;
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
}

.course-contribution-tab.is-active {
    background: rgba(167, 139, 250, 0.18);
    border-color: rgba(167, 139, 250, 0.45);
    color: var(--text-primary);
}

.course-link-form label {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-bottom: 0.85rem;
    font-size: 0.88rem;
    font-weight: 600;
}

.course-link-form input,
.course-link-form textarea {
    padding: 0.55rem 0.7rem;
    border-radius: 8px;
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
    background: rgba(0, 0, 0, 0.25);
    color: inherit;
    font-size: 0.95rem;
    font-weight: 400;
}

.field-optional {
    font-weight: 400;
    color: var(--text-secondary);
}

.course-link-note,
.course-forge-return {
    margin: 0 0 0.85rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

.course-contribution-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.55rem;
    margin-top: 0.5rem;
}

.course-contribution-btn-primary,
.course-contribution-btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1rem;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    border: 1px solid transparent;
}

.course-contribution-btn-secondary {
    background: transparent;
    border-color: var(--border-color, rgba(255, 255, 255, 0.14));
    color: inherit;
}

.course-contribution-btn-primary {
    background: rgba(167, 139, 250, 0.28);
    border-color: rgba(167, 139, 250, 0.55);
    color: inherit;
}

.course-link-status {
    margin: 0.75rem 0 0;
    font-size: 0.88rem;
}

.course-link-status.is-pending {
    color: var(--text-secondary);
}

.course-link-status.is-success {
    color: var(--success-color, #22c55e);
}

.course-link-status.is-error {
    color: #f87171;
}

.course-forge-panel p {
    margin: 0 0 0.85rem;
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

.course-forge-features {
    margin: 0 0 1rem;
    padding: 0;
    list-style: none;
}

.course-forge-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
}

.course-forge-features i {
    color: var(--success-color, #22c55e);
    font-size: 0.8rem;
}

.course-forge-open {
    display: inline-flex;
}

.live-course-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

.live-continue-list {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.live-continue-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    text-decoration: none;
    color: inherit;
    transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.live-continue-row:hover {
    border-color: var(--primary-color);
    transform: translateX(4px);
}

.live-continue-row span {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.progress-analytics-live {
    max-width: 960px;
    margin: 0 auto 2rem;
    padding: 0 2rem;
}

.progress-analytics-live .analytics-course-row {
    display: block;
    padding: 0.85rem 1rem;
    margin-bottom: 0.5rem;
    border-radius: var(--border-radius);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    text-decoration: none;
    color: inherit;
}

.progress-analytics-live .analytics-course-row:hover {
    border-color: var(--primary-color);
}

.auth-ui {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
}

.auth-signin-btn {
    font-size: 0.8rem;
    color: var(--text-primary);
    background: rgba(139, 92, 246, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.35);
    border-radius: 8px;
    cursor: pointer;
    padding: 0.35rem 0.75rem;
}

.auth-signin-btn:hover {
    background: rgba(139, 92, 246, 0.25);
    border-color: var(--primary-color);
}

.auth-email {
    font-size: 0.8rem;
    color: var(--text-secondary);
    max-width: 10rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.auth-hub-link,
.auth-signout-btn {
    font-size: 0.8rem;
    color: var(--secondary-color);
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: none;
    padding: 0.25rem 0.5rem;
}

.auth-signout-btn:hover,
.auth-hub-link:hover {
    color: var(--primary-color);
}

.live-link-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-bottom: 1.5rem;
    padding: 0 2rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.live-empty-panel {
    margin: 1rem 0;
}

.analytics-subjects {
    margin: 1.25rem 0;
}