/* demo/demo.css - Styling khusus untuk halaman demo */

/* ===========================================
   DEMO HERO
   =========================================== */
.demo-hero {
    padding-top: calc(var(--header-height) + var(--space-12));
    padding-bottom: var(--space-12);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    text-align: center;
}

.demo-hero h1 {
    color: white;
    font-size: 2.8rem;
    margin-bottom: var(--space-4);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.demo-hero p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto var(--space-6);
    opacity: 0.95;
}

.hero-badges {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero-badges .badge {
    font-size: var(--font-size-sm);
    padding: var(--space-2) var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* ===========================================
   DEMO NAVIGATION
   =========================================== */
.demo-navigation {
    background-color: var(--color-bg-light);
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: var(--header-height);
    z-index: 99;
    box-shadow: var(--shadow-sm);
}

.demo-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.demo-tab {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    background: none;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    color: var(--color-text);
    font-family: var(--font-heading);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.demo-tab:hover {
    background-color: rgba(44, 90, 160, 0.1);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.demo-tab.active {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
}

.demo-tab i {
    font-size: var(--font-size-lg);
}

/* ===========================================
   DEMO SECTIONS
   =========================================== */
.demo-section {
    display: none;
    padding: var(--space-16) 0;
    opacity: 0;
    animation: fadeIn 0.5s ease-out forwards;
}

.demo-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.demo-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.demo-header h2 {
    color: var(--color-primary);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
}

.demo-header p {
    color: var(--color-text-light);
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto;
}

/* ===========================================
   LMS DEMO
   =========================================== */
.demo-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--space-6);
    background-color: var(--color-bg-light);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--space-12);
}

.demo-sidebar {
    background-color: white;
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: var(--space-6);
    background-color: var(--color-primary);
    color: white;
}

.sidebar-header h3 {
    color: white;
    margin-bottom: var(--space-1);
    font-size: var(--font-size-lg);
}

.sidebar-header p {
    opacity: 0.9;
    font-size: var(--font-size-sm);
    margin: 0;
}

.sidebar-menu {
    flex: 1;
    padding: var(--space-4);
}

.menu-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--border-radius);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-normal);
    margin-bottom: var(--space-2);
    position: relative;
}

.menu-item:hover {
    background-color: rgba(44, 90, 160, 0.1);
    color: var(--color-primary);
}

.menu-item.active {
    background-color: var(--color-primary);
    color: white;
}

.menu-badge {
    position: absolute;
    right: var(--space-4);
    background-color: var(--color-secondary);
    color: var(--color-text);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
}

.sidebar-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--color-border);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
}

.user-info h4 {
    font-size: var(--font-size-sm);
    margin-bottom: 2px;
    color: var(--color-primary);
}

.user-info p {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    margin: 0;
}

.demo-main {
    padding: var(--space-6);
}

.demo-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.toolbar-left {
    display: flex;
    gap: var(--space-2);
}

.toolbar-btn {
    padding: var(--space-2) var(--space-4);
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.toolbar-btn:hover {
    background-color: var(--color-bg);
}

.toolbar-btn.active {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.content-card {
    background-color: white;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.content-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.card-icon {
    width: 50px;
    height: 50px;
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.card-title h4 {
    color: var(--color-primary);
    margin-bottom: var(--space-1);
    font-size: var(--font-size-md);
}

.card-title p {
    color: var(--color-text-light);
    font-size: var(--font-size-xs);
    margin: 0;
}

.quiz-badge {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    padding: var(--space-1) var(--space-3);
    background-color: var(--color-success);
    color: white;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
}

.card-body {
    padding: var(--space-4);
}

.card-body p {
    color: var(--color-text);
    margin-bottom: var(--space-3);
    font-size: var(--font-size-sm);
}

.card-stats {
    display: flex;
    gap: var(--space-4);
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

.card-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.card-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--color-border);
    background-color: var(--color-bg);
}

.progress-container {
    margin-top: var(--space-3);
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-1);
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

.progress-bar {
    height: 8px;
    background-color: #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.discussion-preview {
    background-color: var(--color-bg);
    border-radius: var(--border-radius);
    padding: var(--space-3);
    margin-top: var(--space-3);
}

.discussion-item {
    padding: var(--space-2);
    border-bottom: 1px solid var(--color-border);
    font-size: var(--font-size-xs);
}

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

.demo-notification {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: linear-gradient(135deg, rgba(255, 204, 0, 0.1) 0%, rgba(255, 204, 0, 0.05) 100%);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-secondary);
}

.notification-icon {
    width: 40px;
    height: 40px;
    background-color: var(--color-secondary);
    color: var(--color-text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.notification-content h4 {
    color: var(--color-primary);
    margin-bottom: var(--space-1);
    font-size: var(--font-size-md);
}

.notification-content p {
    color: var(--color-text);
    font-size: var(--font-size-sm);
    margin: 0;
}

.demo-features {
    background-color: white;
    border-radius: var(--border-radius);
    padding: var(--space-8);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
}

.feature-item {
    text-align: center;
    padding: var(--space-4);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-3);
    font-size: var(--font-size-lg);
}

.feature-item h4 {
    color: var(--color-primary);
    margin-bottom: var(--space-2);
    font-size: var(--font-size-md);
}

.feature-item p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* ===========================================
   MOBILE APP DEMO
   =========================================== */
.mobile-demo-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: start;
}

.phone-mockup {
    position: relative;
    width: 320px;
    margin: 0 auto;
}

.phone-screen {
    background-color: #1a1a1a;
    border-radius: 40px;
    padding: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.screen-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    color: white;
    font-size: 12px;
}

.header-icons {
    display: flex;
    gap: 8px;
}

.app-content {
    background-color: white;
    border-radius: 30px;
    overflow: hidden;
    min-height: 600px;
}

.app-nav {
    display: flex;
    justify-content: space-around;
    padding: 15px 0;
    background-color: #f8f9fa;
    border-top: 1px solid #e0e0e0;
}

.nav-btn {
    background: none;
    border: none;
    color: #666;
    font-size: 20px;
    cursor: pointer;
    padding: 10px;
    border-radius: 10px;
    transition: all 0.3s;
}

.nav-btn.active {
    color: var(--color-primary);
    background-color: rgba(44, 90, 160, 0.1);
}

.app-main {
    padding: 20px;
}

.welcome-section {
    text-align: center;
    margin-bottom: 20px;
}

.welcome-section h3 {
    color: var(--color-primary);
    margin-bottom: 5px;
}

.welcome-section p {
    color: #666;
    font-size: 14px;
}

.daily-goal {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: 15px;
    padding: 15px;
    color: white;
    margin-bottom: 20px;
}

.daily-goal h4 {
    margin-bottom: 10px;
    font-size: 16px;
}

.goal-progress {
    display: flex;
    align-items: center;
    gap: 15px;
}

.goal-circle {
    position: relative;
    width: 80px;
    height: 80px;
}

.circle-progress {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(white 75%, rgba(255, 255, 255, 0.2) 0%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.circle-progress::before {
    content: '';
    position: absolute;
    width: 70px;
    height: 70px;
    background-color: var(--color-primary);
    border-radius: 50%;
    top: 5px;
    left: 5px;
}

.goal-circle span {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 20px;
    font-weight: bold;
    color: white;
}

.goal-details p {
    font-size: 12px;
    margin: 5px 0;
}

.lesson-cards {
    margin-bottom: 20px;
}

.lesson-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 10px;
    margin-bottom: 10px;
    border: 2px solid transparent;
    transition: all 0.3s;
}

.lesson-card.active {
    border-color: var(--color-primary);
    background-color: rgba(44, 90, 160, 0.05);
}

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

.lesson-icon {
    width: 50px;
    height: 50px;
    background-color: var(--color-secondary);
    color: var(--color-text);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.lesson-info h5 {
    color: var(--color-primary);
    margin-bottom: 5px;
    font-size: 14px;
}

.lesson-info p {
    color: #666;
    font-size: 12px;
    margin: 0;
}

.btn-play {
    width: 40px;
    height: 40px;
    background-color: var(--color-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 16px;
    margin-left: auto;
}

.completion-badge {
    width: 40px;
    height: 40px;
    background-color: var(--color-success);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    margin-left: auto;
}

.lock-icon {
    width: 40px;
    height: 40px;
    background-color: #e0e0e0;
    color: #999;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    margin-left: auto;
}

.gamification-section {
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 15px;
}

.gamification-section h4 {
    color: var(--color-primary);
    margin-bottom: 10px;
    font-size: 16px;
}

.points-display {
    display: flex;
    justify-content: space-between;
}

.points-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    color: #333;
}

.text-warning {
    color: #ffc107;
}

.mobile-features {
    padding: var(--space-6);
}

.mobile-features h3 {
    color: var(--color-primary);
    margin-bottom: var(--space-6);
    font-size: var(--font-size-xl);
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.feature-list-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.feature-list-icon {
    width: 50px;
    height: 50px;
    background-color: var(--color-secondary);
    color: var(--color-text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.feature-list-content h4 {
    color: var(--color-primary);
    margin-bottom: var(--space-1);
    font-size: var(--font-size-md);
}

.feature-list-content p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin: 0;
}

.download-buttons {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.download-buttons .btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
}

/* ===========================================
   ANALYTICS DEMO
   =========================================== */
.analytics-dashboard {
    background-color: white;
    border-radius: var(--border-radius);
    padding: var(--space-6);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.dashboard-title h3 {
    color: var(--color-primary);
    margin-bottom: var(--space-1);
}

.dashboard-title p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin: 0;
}

.dashboard-controls {
    display: flex;
    gap: var(--space-4);
    align-items: center;
}

.time-select {
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: white;
}

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.analytics-card {
    background-color: var(--color-bg);
    border-radius: var(--border-radius);
    padding: var(--space-6);
    border: 1px solid var(--color-border);
}

.analytics-card.wide {
    grid-column: span 2;
}

.analytics-card h4 {
    color: var(--color-primary);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-md);
}

.chart-container {
    height: 200px;
    position: relative;
}

.difficulty-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.difficulty-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.topic-name {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.difficulty-bar {
    flex: 2;
    height: 8px;
    background-color: #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
}

.difficulty-level {
    height: 100%;
    background: linear-gradient(90deg, #ff6b6b 0%, #ffa8a8 100%);
    border-radius: 4px;
}

.difficulty-percent {
    width: 40px;
    text-align: right;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-danger);
}

.time-metrics {
    display: flex;
    justify-content: space-around;
    text-align: center;
}

.time-metric {
    padding: var(--space-4);
}

.time-value {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--space-1);
}

.time-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

.prediction-container {
    text-align: center;
}

.prediction-circle {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-4);
}

.prediction-progress {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(var(--color-success) 92%, #e0e0e0 0%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.prediction-progress::before {
    content: '';
    position: absolute;
    width: 90px;
    height: 90px;
    background-color: white;
    border-radius: 50%;
    top: 15px;
    left: 15px;
}

.prediction-circle span {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-success);
}

.prediction-container p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin: 0;
}

.student-list {
    background-color: var(--color-bg);
    border-radius: var(--border-radius);
    padding: var(--space-6);
    border: 1px solid var(--color-border);
}

.student-list h4 {
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.student-table {
    display: flex;
    flex-direction: column;
}

.table-header {
    display: grid;
    grid-template-columns: 2fr 2fr 1fr 1fr;
    gap: var(--space-4);
    padding: var(--space-3) 0;
    border-bottom: 2px solid var(--color-border);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    font-size: var(--font-size-sm);
}

.table-row {
    display: grid;
    grid-template-columns: 2fr 2fr 1fr 1fr;
    gap: var(--space-4);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
    align-items: center;
}

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

.student-name {
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
}

.student-progress {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.student-score {
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    text-align: center;
}

.student-status {
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-align: center;
}

.student-status.warning {
    background-color: rgba(255, 193, 7, 0.2);
    color: #856404;
}

.student-status.danger {
    background-color: rgba(220, 53, 69, 0.2);
    color: #721c24;
}

/* ===========================================
   VR LAB DEMO
   =========================================== */
.vr-demo-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.vr-experience {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-8);
}

.vr-viewer {
    background-color: #1a1a1a;
    border-radius: var(--border-radius-lg);
    padding: var(--space-6);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.vr-screen {
    width: 100%;
    height: 400px;
    background: linear-gradient(180deg, #000428 0%, #004e92 100%);
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
    margin-bottom: var(--space-4);
}

.vr-scene {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.vr-object {
    position: absolute;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.vr-object.planet {
    width: 60px;
    height: 60px;
    background: radial-gradient(circle at 30% 30%, #4a90e2, #2c5aa0);
    box-shadow: 0 0 20px rgba(74, 144, 226, 0.5);
}

.vr-object.planet[data-object="mars"] {
    background: radial-gradient(circle at 30% 30%, #ff6b6b, #c44569);
    box-shadow: 0 0 20px rgba(255, 107, 107, 0.5);
    top: 30%;
    left: 40%;
}

.vr-object.planet[data-object="jupiter"] {
    background: radial-gradient(circle at 30% 30%, #ffa726, #f57c00);
    box-shadow: 0 0 20px rgba(255, 167, 38, 0.5);
    top: 60%;
    left: 70%;
    width: 80px;
    height: 80px;
}

.vr-object.star {
    width: 100px;
    height: 100px;
    background: radial-gradient(circle at 30% 30%, #ffeb3b, #ffc107);
    box-shadow: 0 0 40px rgba(255, 235, 59, 0.8);
    top: 20%;
    left: 20%;
}

.vr-label {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: var(--font-size-xs);
    white-space: nowrap;
    padding: 2px 8px;
    background-color: rgba(0, 0, 0, 0.7);
    border-radius: 4px;
    opacity: 0;
    transition: opacity 0.3s;
}

.vr-object:hover .vr-label {
    opacity: 1;
}

.vr-object:hover {
    transform: scale(1.1);
}

.vr-controls {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-top: var(--space-4);
}

.vr-btn {
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: white;
    font-size: var(--font-size-lg);
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.vr-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.vr-info {
    text-align: center;
    padding: var(--space-4);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    margin-top: var(--space-4);
}

.vr-info h4 {
    color: white;
    margin-bottom: var(--space-2);
}

.vr-info p {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    margin: 0;
}

.vr-lessons {
    background-color: white;
    border-radius: var(--border-radius);
    padding: var(--space-6);
    border: 1px solid var(--color-border);
}

.vr-lessons h3 {
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.lesson-selector {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.lesson-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
    cursor: pointer;
    transition: all 0.3s;
}

.lesson-btn:hover {
    background-color: var(--color-bg);
    border-color: var(--color-primary);
}

.lesson-btn.active {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.lesson-btn i {
    font-size: var(--font-size-lg);
}

.vr-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.vr-feature {
    text-align: center;
    padding: var(--space-3);
    background-color: var(--color-bg);
    border-radius: var(--border-radius);
}

.vr-feature i {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    margin-bottom: var(--space-2);
}

.vr-feature h5 {
    color: var(--color-primary);
    margin-bottom: var(--space-1);
    font-size: var(--font-size-sm);
}

.vr-feature p {
    color: var(--color-text-light);
    font-size: var(--font-size-xs);
    margin: 0;
}

.vr-equipment {
    background-color: var(--color-bg);
    border-radius: var(--border-radius);
    padding: var(--space-8);
    border: 1px solid var(--color-border);
}

.vr-equipment h3 {
    color: var(--color-primary);
    text-align: center;
    margin-bottom: var(--space-6);
}

.equipment-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
}

.equipment-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background-color: white;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: all 0.3s;
}

.equipment-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--color-primary);
}

.equipment-icon {
    width: 60px;
    height: 60px;
    background-color: var(--color-secondary);
    color: var(--color-text);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.equipment-info h4 {
    color: var(--color-primary);
    margin-bottom: var(--space-1);
    font-size: var(--font-size-md);
}

.equipment-info p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* ===========================================
   INTERACTIVE QUIZ DEMO
   =========================================== */
.quiz-demo-container {
    background-color: white;
    border-radius: var(--border-radius);
    padding: var(--space-8);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
}

.quiz-progress {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.progress-step {
    width: 40px;
    height: 40px;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-light);
    transition: all 0.3s;
}

.progress-step.active {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.quiz-content {
    margin-bottom: var(--space-8);
}

.quiz-question {
    display: none;
    animation: fadeIn 0.5s ease-out;
}

.quiz-question.active {
    display: block;
}

.quiz-question h3 {
    color: var(--color-primary);
    margin-bottom: var(--space-4);
    font-size: var(--font-size-xl);
}

.quiz-question p {
    color: var(--color-text);
    margin-bottom: var(--space-6);
    font-size: var(--font-size-lg);
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.option {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
}

.option:hover {
    background-color: var(--color-bg);
    border-color: var(--color-primary-light);
}

.option input[type="radio"],
.option input[type="checkbox"] {
    width: 20px;
    height: 20px;
}

.option span {
    flex: 1;
    color: var(--color-text);
    font-size: var(--font-size-md);
}

.quiz-hint {
    background-color: rgba(255, 204, 0, 0.1);
    border-radius: var(--border-radius);
    padding: var(--space-4);
    border-left: 4px solid var(--color-secondary);
}

.hint-content {
    margin-top: var(--space-3);
    padding: var(--space-3);
    background-color: white;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.matching-quiz {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
}

.matching-column {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.matching-item {
    padding: var(--space-4);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: move;
    background-color: white;
    transition: all 0.3s;
}

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

.essay-input {
    width: 100%;
    padding: var(--space-4);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    resize: vertical;
}

.essay-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.1);
}

.quiz-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--space-8);
}

.quiz-timer {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: var(--font-weight-bold);
    color: var(--color-danger);
    font-size: var(--font-size-lg);
}

.quiz-results {
    background-color: var(--color-bg);
    border-radius: var(--border-radius);
    padding: var(--space-8);
    text-align: center;
    animation: fadeIn 0.5s ease-out;
}

.quiz-results h3 {
    color: var(--color-primary);
    margin-bottom: var(--space-6);
}

.result-score {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.score-circle {
    position: relative;
    width: 150px;
    height: 150px;
}

.score-circle::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(var(--color-primary) 0%, #e0e0e0 0%);
    animation: fillCircle 1s ease-out forwards;
}

@keyframes fillCircle {
    to {
        background: conic-gradient(var(--color-primary) var(--fill-percent), #e0e0e0 0%);
    }
}

.score-circle span {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.score-circle small {
    font-size: 1.5rem;
    color: var(--color-text-light);
}

.score-details h4 {
    color: var(--color-primary);
    margin-bottom: var(--space-2);
    font-size: var(--font-size-xl);
}

.score-details p {
    color: var(--color-text-light);
    font-size: var(--font-size-md);
    margin: 0;
}

.result-breakdown {
    text-align: left;
    margin-bottom: var(--space-8);
}

.result-breakdown h4 {
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

.breakdown-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.result-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
}

/* ===========================================
   REQUEST DEMO
   =========================================== */
.request-demo {
    padding: var(--space-20) 0;
    background: linear-gradient(rgba(44, 90, 160, 0.9), rgba(30, 58, 111, 0.9));
    color: white;
    text-align: center;
}

.request-content h2 {
    color: white;
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-4);
}

.request-content p {
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto var(--space-8);
    opacity: 0.9;
}

.request-form {
    background-color: white;
    border-radius: var(--border-radius);
    padding: var(--space-8);
    max-width: 800px;
    margin: 0 auto;
    box-shadow: var(--shadow-xl);
}

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    margin-bottom: var(--space-4);
    transition: all var(--transition-normal);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.1);
}

.form-actions {
    text-align: center;
    margin-top: var(--space-6);
}

.form-note {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin-top: var(--space-3);
}

/* ===========================================
   RESPONSIVE DESIGN
   =========================================== */
@media (max-width: 1024px) {
    .demo-container {
        grid-template-columns: 1fr;
    }
    
    .demo-sidebar {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }
    
    .mobile-demo-container {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .phone-mockup {
        order: 2;
    }
    
    .vr-experience {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
}

@media (max-width: 768px) {
    .demo-hero h1 {
        font-size: 2rem;
    }
    
    .demo-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: var(--space-2);
        justify-content: flex-start;
    }
    
    .demo-tab {
        flex-shrink: 0;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .analytics-grid {
        grid-template-columns: 1fr;
    }
    
    .analytics-card.wide {
        grid-column: span 1;
    }
    
    .table-header,
    .table-row {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2);
    }
    
    .student-name,
    .student-progress,
    .student-score,
    .student-status {
        font-size: var(--font-size-xs);
    }
    
    .matching-quiz {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .result-score {
        flex-direction: column;
        gap: var(--space-4);
    }
}

@media (max-width: 480px) {
    .demo-tabs {
        flex-direction: column;
        align-items: stretch;
    }
    
    .demo-tab {
        width: 100%;
        justify-content: center;
    }
    
    .toolbar-left {
        flex-wrap: wrap;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .lesson-selector {
        grid-template-columns: 1fr;
    }
    
    .vr-features {
        grid-template-columns: 1fr;
    }
    
    .equipment-list {
        grid-template-columns: 1fr;
    }
    
    .result-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .result-actions .btn {
        width: 100%;
        max-width: 300px;
    }
}