/* AcadNet Engage - Interactive Presentation Platform */

:root {
    /* Primary Brand Colors */
    --primary: #086586;
    --primary-dark: #065279;
    --primary-light: #0a7db8;
    --primary-lighter: #e8f4f9;
    
    /* Accent Colors */
    --accent: #fd4f18;
    --accent-dark: #e04510;
    --accent-light: #ff6a3a;
    --accent-lighter: #fff0eb;
    
    /* Secondary Colors */
    --secondary: #10b981;
    --secondary-light: #d1fae5;
    
    /* Status Colors */
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --success: #10b981;
    --success-light: #d1fae5;
    
    /* Neutral Colors */
    --dark: #1e293b;
    --darker: #0f172a;
    --light: #f8fafc;
    --lighter: #ffffff;
    --gray: #64748b;
    --gray-light: #e2e8f0;
    --gray-lighter: #f1f5f9;
    
    /* UI Properties */
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --shadow: 0 4px 6px -1px rgba(8, 101, 134, 0.1), 0 2px 4px -1px rgba(8, 101, 134, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(8, 101, 134, 0.1), 0 4px 6px -2px rgba(8, 101, 134, 0.05);
    --shadow-accent: 0 4px 14px rgba(253, 79, 24, 0.25);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f8fafc;
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.6;
}

/* Light gradient background for landing pages */
body.landing-page {
    background: linear-gradient(135deg, #e8f4f9 0%, #f8fafc 50%, #fff0eb 100%);
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.3;
}

/* Containers */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.container-sm {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}

/* Cards */
.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--gray-light);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: var(--gray-light);
    color: var(--dark);
}

.btn-secondary:hover {
    background: #cbd5e1;
}

.btn-success {
    background: var(--accent);
    color: white;
}

.btn-success:hover {
    background: var(--accent-dark);
    box-shadow: var(--shadow-accent);
}

.btn-accent {
    background: var(--accent);
    color: white;
}

.btn-accent:hover {
    background: var(--accent-dark);
    box-shadow: var(--shadow-accent);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-warning {
    background: #f59e0b;
    color: white;
}

.btn-warning:hover {
    background: #d97706;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    min-width: 180px;
    z-index: 1000;
    margin-top: 4px;
    padding: 4px 0;
    border: 1px solid #e2e8f0;
}

.dropdown-item {
    display: block;
    width: 100%;
    padding: 10px 16px;
    text-align: left;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 0.95rem;
    color: #1e293b;
    transition: background 0.2s;
}

.dropdown-item:hover {
    background: #f1f5f9;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-icon {
    padding: 8px;
    border-radius: 8px;
}

.btn-block {
    width: 100%;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
}

.form-input, .form-textarea, .form-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-light);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

/* Navigation */
.navbar {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(8, 101, 134, 0.3);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
}

.navbar-brand:before {
    content: "🎓";
    font-size: 1.5rem;
}

.navbar-brand svg {
    width: 32px;
    height: 32px;
}

.session-code {
    background: var(--accent);
    color: white;
    padding: 8px 20px;
    border-radius: 8px;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 2px;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 4px;
    background: var(--gray-light);
    padding: 4px;
    border-radius: 10px;
    margin-bottom: 24px;
}

.tab {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    color: var(--gray);
}

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

.tab:hover:not(.active) {
    color: var(--dark);
}

/* Poll Options */
.poll-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--light);
    border: 2px solid var(--gray-light);
    border-radius: 10px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.poll-option:hover {
    border-color: var(--primary-light);
    background: #f0f0ff;
}

.poll-option.selected {
    border-color: var(--primary);
    background: #eef2ff;
}

.poll-option-radio {
    width: 24px;
    height: 24px;
    border: 2px solid var(--gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.poll-option.selected .poll-option-radio {
    border-color: var(--primary);
    background: var(--primary);
}

.poll-option.selected .poll-option-radio::after {
    content: '';
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
}

.poll-option-text {
    flex: 1;
    font-size: 1rem;
}

/* Results Bar */
.result-bar-container {
    margin-bottom: 16px;
}

.result-bar-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
}

.result-bar-label {
    font-weight: 500;
}

.result-bar-value {
    color: var(--gray);
    font-size: 0.9rem;
}

.result-bar {
    height: 40px;
    background: var(--gray-light);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

.result-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: 8px;
    transition: width 0.5s ease;
    display: flex;
    align-items: center;
    padding-left: 12px;
}

.result-bar-percentage {
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Q&A */
.question-card {
    background: var(--light);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 12px;
    border-left: 4px solid var(--gray-light);
    transition: var(--transition);
}

.question-card.highlighted {
    border-left-color: var(--warning);
    background: #fffbeb;
}

.question-card.answered {
    border-left-color: var(--secondary);
    opacity: 0.7;
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.question-text {
    flex: 1;
    font-size: 1rem;
    line-height: 1.5;
}

.question-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--gray);
}

.upvote-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: white;
    border: 2px solid var(--gray-light);
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.upvote-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.upvote-btn.voted {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Word Cloud */
.wordcloud-container {
    min-height: 300px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 16px 24px;
    padding: 30px;
    background: transparent;
}

.word-item {
    padding: 5px 10px;
    background: transparent;
    font-weight: 700;
    transition: var(--transition);
    cursor: default;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
    line-height: 1.2;
}

.word-item:hover {
    transform: scale(1.15);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

/* Presentation mode word cloud - white text shadow for dark background */
.presentation-mode .wordcloud-container {
    min-height: 400px;
}

.presentation-mode .word-item {
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    filter: brightness(1.2);
}

.word-input-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.word-input {
    flex: 1;
    min-width: 150px;
}

/* Quiz */
.quiz-question {
    text-align: center;
    padding: 40px 20px;
}

.quiz-question-number {
    font-size: 0.9rem;
    color: var(--gray);
    margin-bottom: 8px;
}

.quiz-question-text {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 32px;
}

.quiz-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.quiz-option {
    padding: 24px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    color: white;
}

.quiz-option:nth-child(1) { background: #ef4444; }
.quiz-option:nth-child(2) { background: #3b82f6; }
.quiz-option:nth-child(3) { background: #f59e0b; }
.quiz-option:nth-child(4) { background: #10b981; }

.quiz-option:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.quiz-option.selected {
    outline: 4px solid var(--dark);
}

.quiz-option.correct {
    outline: 4px solid #22c55e;
}

.quiz-option.incorrect {
    outline: 4px solid #ef4444;
    opacity: 0.6;
}

/* Leaderboard */
.leaderboard-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--light);
    border-radius: 10px;
    margin-bottom: 8px;
}

.leaderboard-rank {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-light);
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.1rem;
}

.leaderboard-item:nth-child(1) .leaderboard-rank {
    background: linear-gradient(135deg, #ffd700, #ffb700);
    color: white;
}

.leaderboard-item:nth-child(2) .leaderboard-rank {
    background: linear-gradient(135deg, #c0c0c0, #a8a8a8);
    color: white;
}

.leaderboard-item:nth-child(3) .leaderboard-rank {
    background: linear-gradient(135deg, #cd7f32, #b87333);
    color: white;
}

.leaderboard-name {
    flex: 1;
    font-weight: 500;
}

.leaderboard-score {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.1rem;
}

/* Rating */
.rating-stars {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin: 20px 0;
}

.rating-star {
    font-size: 3rem;
    cursor: pointer;
    color: var(--gray-light);
    transition: var(--transition);
}

.rating-star:hover,
.rating-star.active {
    color: #fbbf24;
    transform: scale(1.1);
}

.rating-average {
    text-align: center;
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
}

.rating-count {
    text-align: center;
    color: var(--gray);
    margin-top: 8px;
}

/* Presenter View Specific */
.presenter-grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 24px;
    min-height: calc(100vh - 100px);
}

.sidebar {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.sidebar-section {
    margin-bottom: 24px;
}

.sidebar-title {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--gray);
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.item-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.item-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--light);
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    width: 100%;
    font-size: 0.95rem;
}

.item-btn:hover {
    border-color: var(--primary-light);
}

.item-btn.active {
    border-color: var(--primary);
    background: #eef2ff;
}

.item-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: white;
    border-radius: 6px;
    font-size: 0.9rem;
}

.main-content {
    background: white;
    border-radius: var(--border-radius);
    padding: 32px;
}

/* Presentation Mode */
.presentation-mode {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, var(--darker) 0%, var(--dark) 100%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
}

.presentation-question {
    font-size: 2.5rem;
    font-weight: 600;
    text-align: center;
    max-width: 900px;
    margin-bottom: 60px;
}

.presentation-results {
    width: 100%;
    max-width: 800px;
}

.presentation-bar {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 24px;
}

.presentation-bar-label {
    width: 200px;
    font-size: 1.25rem;
    text-align: right;
}

.presentation-bar-track {
    flex: 1;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    overflow: hidden;
}

.presentation-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 0.5s ease;
}

.presentation-bar-value {
    width: 80px;
    font-size: 1.5rem;
    font-weight: 700;
}

.close-presentation {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.close-presentation:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Audience View */
.audience-header {
    text-align: center;
    padding: 40px 20px;
    color: white;
}

.audience-header h1 {
    font-size: 2rem;
    margin-bottom: 8px;
}

.audience-header p {
    opacity: 0.8;
}

.join-form {
    max-width: 400px;
    margin: 0 auto;
    padding: 40px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.join-input {
    font-size: 2rem;
    text-align: center;
    letter-spacing: 8px;
    text-transform: uppercase;
    font-weight: 700;
}

/* Waiting State */
.waiting-state {
    text-align: center;
    padding: 60px 20px;
}

.waiting-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: pulse 2s infinite;
}

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

.waiting-text {
    font-size: 1.25rem;
    color: var(--gray);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: white;
    border-radius: var(--border-radius);
    padding: 32px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(-20px);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-primary {
    background: #eef2ff;
    color: var(--primary);
}

.badge-success {
    background: #ecfdf5;
    color: var(--secondary);
}

.badge-warning {
    background: #fffbeb;
    color: var(--warning);
}

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray); }
.text-primary { color: var(--primary); }
.text-success { color: var(--secondary); }
.text-danger { color: var(--danger); }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

.hidden { display: none !important; }

/* Responsive */
@media (max-width: 768px) {
    .presenter-grid {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
    }
    
    .quiz-options {
        grid-template-columns: 1fr;
    }
    
    .presentation-question {
        font-size: 1.5rem;
    }
    
    .tabs {
        flex-wrap: wrap;
    }
    
    .tab {
        flex: 1 1 45%;
    }
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 16px 24px;
    background: var(--dark);
    color: white;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
}

.toast.success {
    background: var(--secondary);
}

.toast.error {
    background: var(--danger);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state-text {
    font-size: 1.1rem;
    margin-bottom: 24px;
}

/* Timer */
.timer {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    text-align: center;
}

.timer.warning {
    color: var(--warning);
}

.timer.danger {
    color: var(--danger);
}

/* Progress */
.progress-bar {
    height: 8px;
    background: var(--gray-light);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    transition: width 0.3s ease;
}

/* Admin Controls */
.admin-controls {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.admin-controls .btn {
    padding: 8px 12px;
    font-size: 0.85rem;
}

/* Copy Button */
.copy-btn {
    background: var(--gray-light);
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.copy-btn:hover {
    background: #cbd5e1;
}

/* QR Code placeholder */
.qr-placeholder {
    width: 150px;
    height: 150px;
    background: var(--light);
    border: 2px dashed var(--gray-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

/* ============ RESPONSIVE STYLES ============ */

/* Tablet and below (max-width: 992px) */
@media (max-width: 992px) {
    .container {
        padding: 16px;
    }
    
    .navbar {
        padding: 12px 16px;
        flex-wrap: wrap;
        gap: 12px;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .presenter-grid {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 8px;
        margin-bottom: 16px;
    }
    
    .sidebar-section {
        flex: 1;
        min-width: 200px;
    }
    
    .card {
        padding: 16px;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .admin-controls {
        width: 100%;
        justify-content: flex-start;
    }
    
    .modal {
        width: 95%;
        max-width: 500px;
        margin: 20px;
        max-height: 90vh;
    }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }
    
    .container {
        padding: 12px;
    }
    
    .navbar {
        padding: 10px 12px;
    }
    
    .navbar > div {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .navbar-brand {
        font-size: 1.1rem;
        width: 100%;
        justify-content: center;
        margin-bottom: 8px;
    }
    
    .navbar-brand:before {
        font-size: 1.2rem;
    }
    
    .session-code {
        padding: 6px 14px;
        font-size: 1rem;
        letter-spacing: 1px;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 0.9rem;
    }
    
    .btn-sm {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
    
    .btn-lg {
        padding: 14px 24px;
        font-size: 1rem;
    }
    
    .btn-block {
        width: 100%;
    }
    
    .card {
        padding: 14px;
        border-radius: 10px;
    }
    
    .card-title {
        font-size: 1.1rem;
    }
    
    .tabs {
        flex-wrap: wrap;
    }
    
    .tab {
        padding: 10px 12px;
        font-size: 0.85rem;
        flex: 1 1 auto;
        min-width: 80px;
    }
    
    .form-input, .form-select, .form-textarea {
        padding: 10px 12px;
        font-size: 14px;
    }
    
    .form-label {
        font-size: 0.85rem;
    }
    
    .sidebar {
        flex-direction: column;
    }
    
    .sidebar-section {
        min-width: 100%;
    }
    
    .item-list {
        max-height: 200px;
    }
    
    .modal {
        width: 100%;
        max-width: none;
        margin: 10px;
        border-radius: 12px;
        max-height: 85vh;
    }
    
    .modal-header {
        padding: 14px 16px;
    }
    
    .modal-title {
        font-size: 1.1rem;
    }
    
    .poll-option-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .poll-option-text {
        font-size: 0.9rem;
    }
    
    .rating-value {
        font-size: 2.5rem;
    }
    
    .star-rating {
        font-size: 1.8rem;
    }
    
    .wordcloud-container {
        gap: 12px;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    h2 {
        font-size: 1.4rem;
    }
    
    h3 {
        font-size: 1.15rem;
    }
    
    /* Hide some navbar buttons on mobile */
    .navbar .btn-secondary.btn-sm {
        padding: 6px 8px;
        font-size: 0.75rem;
    }
    
    .copy-btn {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    .navbar {
        padding: 8px 10px;
    }
    
    .navbar-brand {
        font-size: 1rem;
    }
    
    .session-code {
        padding: 5px 10px;
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 8px 12px;
        font-size: 0.85rem;
    }
    
    .card {
        padding: 12px;
    }
    
    .modal {
        margin: 5px;
        max-height: 90vh;
    }
    
    .form-input, .form-select, .form-textarea {
        padding: 8px 10px;
    }
    
    .rating-value {
        font-size: 2rem;
    }
    
    .star-rating {
        font-size: 1.5rem;
    }
    
    .waiting-icon {
        font-size: 3rem;
    }
    
    .waiting-text {
        font-size: 1.1rem;
    }
}