.app{min-height:100vh;background-color:var(--bg-main)}.session-warning{position:fixed;top:0;left:0;right:0;z-index:9999;background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff;padding:.75rem 1rem;animation:slideDown .3s ease}@keyframes slideDown{0%{transform:translateY(-100%)}to{transform:translateY(0)}}.warning-content{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:center;gap:.75rem}.warning-icon{width:20px;height:20px;flex-shrink:0}.dismiss-btn{background:#fff3;border:none;color:#fff;width:24px;height:24px;border-radius:50%;cursor:pointer;font-size:1.25rem;line-height:1;display:flex;align-items:center;justify-content:center;margin-left:1rem}.dismiss-btn:hover{background:#ffffff4d}:root{--bg-main: #e9ecef;--bg-card: #f8f9fa;--accent: #2dc653;--accent-hover: #25a847;--accent-light: rgba(45, 198, 83, .1);--text-primary: #000000;--text-secondary: #495057;--text-muted: #6c757d;--white: #ffffff;--border: #dee2e6;--border-light: #e9ecef;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--font-sans: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);font-weight:400;line-height:1.6;color:var(--text-primary);background-color:var(--bg-main)}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;letter-spacing:-.02em}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}h5{font-size:1rem}h6{font-size:.875rem}p{margin-bottom:var(--spacing-md)}a{color:var(--accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--accent-hover)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-lg);font-family:var(--font-sans);font-size:.9375rem;font-weight:500;line-height:1.5;text-align:center;white-space:nowrap;vertical-align:middle;cursor:pointer;-webkit-user-select:none;user-select:none;border:2px solid transparent;border-radius:var(--radius-md);transition:all var(--transition-fast)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background-color:var(--accent);color:var(--white);border-color:var(--accent)}.btn-primary:hover:not(:disabled){background-color:var(--accent-hover);border-color:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--white);color:var(--text-primary);border-color:var(--border)}.btn-secondary:hover:not(:disabled){background-color:var(--bg-card);border-color:var(--text-muted)}.btn-outline{background-color:transparent;color:var(--accent);border-color:var(--accent)}.btn-outline:hover:not(:disabled){background-color:var(--accent);color:var(--white)}.btn-danger{background-color:#dc3545;color:var(--white);border-color:#dc3545}.btn-danger:hover:not(:disabled){background-color:#c82333;border-color:#c82333}.btn-lg{padding:var(--spacing-md) var(--spacing-xl);font-size:1.0625rem;border-radius:var(--radius-lg)}.btn-sm{padding:var(--spacing-xs) var(--spacing-md);font-size:.8125rem}.btn-icon{width:2.5rem;height:2.5rem;padding:0;border-radius:var(--radius-full)}.input-group{margin-bottom:var(--spacing-md)}.input-label{display:block;margin-bottom:var(--spacing-xs);font-size:.875rem;font-weight:500;color:var(--text-secondary)}.input{width:100%;padding:var(--spacing-sm) var(--spacing-md);font-family:var(--font-sans);font-size:1rem;line-height:1.5;color:var(--text-primary);background-color:var(--white);border:2px solid var(--border);border-radius:var(--radius-md);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.input::placeholder{color:var(--text-muted)}.card{background-color:var(--bg-card);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);overflow:hidden}.card-header{padding:var(--spacing-lg);border-bottom:1px solid var(--border-light)}.card-body{padding:var(--spacing-lg)}.card-footer{padding:var(--spacing-lg);border-top:1px solid var(--border-light);background-color:var(--bg-main)}.split-layout{display:flex;min-height:100vh}.split-left{flex:1;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl);background-color:var(--bg-main)}.split-right{flex:1;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl);background-color:var(--white)}@media (max-width: 768px){.split-layout{flex-direction:column}.split-left,.split-right{flex:none;min-height:50vh}}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.container-sm{max-width:640px}.container-md{max-width:768px}.container-lg{max-width:1024px}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.text-primary{color:var(--text-primary)}.text-secondary{color:var(--text-secondary)}.text-muted{color:var(--text-muted)}.text-accent{color:var(--accent)}.text-white{color:var(--white)}.font-mono{font-family:var(--font-mono)}.font-medium{font-weight:500}.font-semibold{font-weight:600}.font-bold{font-weight:700}.mt-1{margin-top:var(--spacing-xs)}.mt-2{margin-top:var(--spacing-sm)}.mt-3{margin-top:var(--spacing-md)}.mt-4{margin-top:var(--spacing-lg)}.mt-5{margin-top:var(--spacing-xl)}.mb-1{margin-bottom:var(--spacing-xs)}.mb-2{margin-bottom:var(--spacing-sm)}.mb-3{margin-bottom:var(--spacing-md)}.mb-4{margin-bottom:var(--spacing-lg)}.mb-5{margin-bottom:var(--spacing-xl)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-1{gap:var(--spacing-xs)}.gap-2{gap:var(--spacing-sm)}.gap-3{gap:var(--spacing-md)}.gap-4{gap:var(--spacing-lg)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.animate-fade-in{animation:fadeIn var(--transition-normal) ease-out}.animate-slide-up{animation:slideUp var(--transition-slow) ease-out}.animate-pulse{animation:pulse 2s ease-in-out infinite}.animate-spin{animation:spin 1s linear infinite}.video-container{position:relative;width:100%;background-color:var(--text-primary);border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:16 / 9}.video-element{width:100%;height:100%;object-fit:cover}.video-placeholder{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background-color:#1a1a1a;color:var(--white)}.video-controls{position:absolute;bottom:0;left:0;right:0;padding:var(--spacing-md);background:linear-gradient(transparent,#000000b3);display:flex;align-items:center;justify-content:center;gap:var(--spacing-md)}.timer{display:inline-flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background-color:var(--white);border-radius:var(--radius-full);font-family:var(--font-mono);font-size:.875rem;font-weight:500}.timer-warning{background-color:#fff3cd;color:#856404}.timer-danger{background-color:#f8d7da;color:#721c24}.badge{display:inline-flex;align-items:center;padding:var(--spacing-xs) var(--spacing-sm);font-size:.75rem;font-weight:500;border-radius:var(--radius-full)}.badge-success{background-color:var(--accent-light);color:var(--accent)}.badge-live{background-color:#dc3545;color:var(--white)}.participant-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--spacing-md)}.participant-card{background-color:var(--bg-card);border-radius:var(--radius-lg);padding:var(--spacing-md);display:flex;align-items:center;gap:var(--spacing-md)}.participant-avatar{width:48px;height:48px;border-radius:var(--radius-full);background-color:var(--accent);color:var(--white);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1.125rem}.loading-spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}.loading-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000}.toast-container{position:fixed;top:var(--spacing-lg);right:var(--spacing-lg);z-index:1100;display:flex;flex-direction:column;gap:var(--spacing-sm)}.toast{padding:var(--spacing-md) var(--spacing-lg);background-color:var(--white);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);animation:slideUp var(--transition-normal) ease-out}.toast-success{border-left:4px solid var(--accent)}.toast-error{border-left:4px solid #dc3545}.toast-warning{border-left:4px solid #ffc107}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background-color:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;padding:var(--spacing-lg)}.modal{background-color:var(--white);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);width:100%;max-width:500px;max-height:90vh;overflow:auto;animation:slideUp var(--transition-normal) ease-out}.modal-header{padding:var(--spacing-lg);border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between}.modal-body{padding:var(--spacing-lg)}.modal-footer{padding:var(--spacing-lg);border-top:1px solid var(--border-light);display:flex;justify-content:flex-end;gap:var(--spacing-sm)}