:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.login-container{display:flex;justify-content:center;align-items:center;min-height:80vh;padding:20px;background:linear-gradient(135deg,#1e1e1ecc,#121212e6)}.login-card{background-color:var(--bg-secondary);border-radius:var(--border-radius);box-shadow:var(--box-shadow);padding:40px;width:100%;max-width:450px;border:1px solid rgba(255,255,255,.1);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:fadeIn .5s ease-out}.login-header{display:flex;flex-direction:column;align-items:center;margin-bottom:30px}.logo{margin-bottom:20px;animation:pulse 3s infinite}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}.login-card h2{color:var(--text-primary);margin-bottom:15px;text-align:center;font-size:2rem;font-weight:700;background:linear-gradient(90deg,var(--accent-secondary),var(--accent-primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.login-subtitle{color:var(--text-secondary);text-align:center;margin-bottom:10px;font-size:1.1rem}.login-form{display:flex;flex-direction:column;gap:20px}.form-group{display:flex;flex-direction:column;position:relative}.form-group label{margin-bottom:8px;font-weight:500;color:var(--text-secondary);font-size:.9rem;letter-spacing:.5px;text-transform:uppercase;display:flex;align-items:center;gap:8px}.form-group label svg{color:var(--accent-secondary)}.form-group input{padding:14px 16px;border:1px solid rgba(255,255,255,.1);border-radius:var(--border-radius);font-size:16px;transition:var(--transition);background-color:var(--bg-tertiary);color:var(--text-primary)}.form-group input:focus{border-color:var(--accent-primary);outline:none;box-shadow:0 0 0 2px #6200ee33}.login-button{background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));color:#fff;border:none;border-radius:var(--border-radius);padding:14px;font-size:16px;cursor:pointer;transition:var(--transition);margin-top:10px;font-weight:600;letter-spacing:.5px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:center;gap:10px}.login-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:.5s}.login-button:hover:before{left:100%}.login-button:hover{transform:translateY(-3px);box-shadow:0 7px 14px #0000004d}.login-button:disabled{background:linear-gradient(90deg,#4a4a4a,#6a6a6a);cursor:not-allowed;transform:none;box-shadow:none}.error-message{background-color:#cf66791a;color:var(--error);padding:12px;border-radius:var(--border-radius);margin-bottom:20px;text-align:center;border:1px solid var(--error);font-size:.95rem;display:flex;align-items:center;justify-content:center;gap:10px}.login-help{margin-top:35px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1)}.login-help p{color:var(--text-secondary);margin-bottom:15px;font-size:.95rem;text-align:center}.test-accounts{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px}.account-card{background-color:var(--bg-tertiary);padding:12px;border-radius:var(--border-radius);border:1px solid rgba(255,255,255,.05);display:flex;align-items:center;gap:10px;transition:var(--transition)}.account-card:hover{transform:translateY(-3px);box-shadow:0 5px 10px #0003;background-color:#6200ee1a;border-color:#6200ee4d}.account-icon{background-color:#6200ee1a;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:var(--accent-secondary)}.account-details{flex:1}.account-username{color:var(--text-primary);font-weight:600;font-size:.9rem}.account-password{color:var(--text-secondary);font-size:.8rem;margin-top:2px}@media (max-width: 480px){.login-card{padding:25px}.test-accounts{grid-template-columns:1fr}}.progress-container{margin-bottom:30px;background-color:var(--bg-secondary);padding:20px;border-radius:var(--border-radius);box-shadow:var(--box-shadow);border:1px solid rgba(255,255,255,.05)}.progress-label{margin-bottom:10px;font-weight:600;color:var(--text-primary);display:flex;justify-content:space-between;align-items:center}.progress-bar{height:12px;background-color:var(--bg-tertiary);border-radius:6px;overflow:hidden;box-shadow:inset 0 1px 3px #0003;position:relative}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));border-radius:6px;transition:width .5s ease;position:relative;overflow:hidden}.progress-fill:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,#fff0,#fff3,#fff0);animation:shimmer 2s infinite}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}:root{--accent-primary: #6200ee;--accent-secondary: #03dac6;--bg-primary: #121212;--bg-secondary: #1e1e1e;--bg-tertiary: #2d2d2d;--text-primary: #ffffff;--text-secondary: #b0b0b0;--error: #cf6679;--success: #03dac6;--border-radius: 8px;--box-shadow: 0 4px 6px rgba(0, 0, 0, .1);--transition: all .3s ease}.validation-container{padding:30px;min-width:1200px;max-width:1200px;margin:0 auto;animation:fadeIn .5s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.loading,.error,.no-videos{text-align:center;padding:60px;font-size:18px;color:var(--text-secondary);background-color:var(--bg-secondary);border-radius:var(--border-radius);box-shadow:var(--box-shadow);margin-top:30px;display:flex;flex-direction:column;align-items:center;gap:20px}.loading-spinner{width:40px;height:40px;border:4px solid rgba(255,255,255,.1);border-radius:50%;border-top-color:var(--accent-primary);animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}.error{color:var(--error);border:1px solid var(--error)}.retry-button{background-color:var(--accent-primary);color:#fff;border:none;border-radius:var(--border-radius);padding:10px 20px;cursor:pointer;transition:var(--transition);font-weight:500}.retry-button:hover{background-color:#7c4dff;transform:translateY(-2px)}.video-section{margin-bottom:40px;background-color:var(--bg-secondary);border-radius:var(--border-radius);padding:25px;box-shadow:var(--box-shadow);border:1px solid rgba(255,255,255,.05);position:relative}.video-section h2{margin-bottom:20px;color:var(--text-primary);font-weight:600;display:flex;align-items:center;justify-content:center}.video-counter{display:flex;align-items:center;background-color:var(--bg-tertiary);padding:8px 16px;border-radius:20px;font-size:.9rem}.video-counter .completed{color:var(--accent-secondary);font-weight:700}.video-counter .separator{margin:0 5px;color:var(--text-secondary)}.video-counter .total{color:var(--text-secondary)}.video-player{width:100%;background-color:#000;border-radius:var(--border-radius);overflow:hidden;margin-bottom:20px;box-shadow:0 10px 20px #0000004d;position:relative;aspect-ratio:16 / 9}.video-controls{display:flex;justify-content:space-between;padding:0 20px;width:100%}.control-button{background-color:#0009;border:none;border-radius:50%;width:48px;height:48px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition);color:#fff}.control-button:hover:not(:disabled){background-color:#6200eecc;transform:scale(1.1)}.control-button:disabled{opacity:.3;cursor:not-allowed}.selection-section{margin-top:40px;background-color:var(--bg-secondary);border-radius:var(--border-radius);padding:25px;box-shadow:var(--box-shadow);border:1px solid rgba(255,255,255,.05)}.selection-section h3{margin-bottom:20px;color:var(--text-primary);font-weight:600;text-align:center}.not-recognized-container{display:flex;justify-content:center;margin-bottom:20px}.not-recognized-container .sign-button{background-color:#cf667933;border:2px solid transparent;min-width:180px;font-weight:500}.not-recognized-container .sign-button:hover{background-color:#cf66794d}.not-recognized-container .sign-button.selected{background-color:#cf667966;border-color:var(--error);color:var(--error)}.sign-options{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px;justify-content:center;min-height:200px;align-content:flex-start}.sign-button{background-color:var(--bg-tertiary);border:2px solid transparent;border-radius:var(--border-radius);padding:12px 18px;cursor:pointer;transition:var(--transition);font-size:16px;color:var(--text-primary);min-width:120px;text-align:center;position:relative;display:flex;align-items:center;justify-content:center;gap:8px}.sign-button:hover{background-color:var(--bg-primary);transform:translateY(-3px);box-shadow:0 5px 10px #0003}.sign-button.selected{background-color:#6200ee33;border-color:var(--accent-primary);color:var(--accent-secondary);transform:translateY(-3px);box-shadow:0 5px 15px #6200ee4d}.check-icon{color:var(--accent-secondary)}.submit-section{margin-top:30px;display:flex;flex-direction:column;align-items:center;gap:20px}.submit-button{background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));color:#fff;border:none;border-radius:var(--border-radius);padding:14px 30px;font-size:16px;cursor:pointer;transition:var(--transition);font-weight:600;letter-spacing:.5px;position:relative;overflow:hidden;min-width:200px;display:flex;align-items:center;justify-content:center;gap:10px}.submit-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:.5s}.submit-button:hover:before{left:100%}.submit-button:hover:not(:disabled){transform:translateY(-3px);box-shadow:0 7px 14px #0000004d}.submit-button:disabled{background:linear-gradient(90deg,#4a4a4a,#6a6a6a);cursor:not-allowed;transform:none;box-shadow:none}.spinner{width:20px;height:20px;border:2px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin 1s ease-in-out infinite}.success-message{background-color:#03dac61a;color:var(--success);padding:12px 20px;border-radius:var(--border-radius);text-align:center;border:1px solid var(--success);font-weight:500;animation:pulse 2s infinite;display:flex;align-items:center;justify-content:center;gap:10px;width:100%;max-width:400px}@keyframes pulse{0%{box-shadow:0 0 #03dac666}70%{box-shadow:0 0 0 10px #03dac600}to{box-shadow:0 0 #03dac600}}.completion-message{text-align:center;padding:60px 40px;background-color:var(--bg-secondary);border-radius:var(--border-radius);margin-top:30px;box-shadow:var(--box-shadow);border:1px solid rgba(255,255,255,.05);animation:fadeIn .5s ease-out;display:flex;flex-direction:column;align-items:center;gap:20px}.completion-message svg{color:var(--success);width:60px;height:60px}.completion-message h2{color:var(--success);margin-bottom:20px;font-size:2rem;font-weight:700}.completion-message p{color:var(--text-secondary);font-size:1.2rem;max-width:600px;margin:0 auto}.filter-container{margin-bottom:20px;display:flex;justify-content:center}.filter-input{padding:12px 16px;border:1px solid rgba(255,255,255,.1);border-radius:var(--border-radius);font-size:16px;transition:var(--transition);background-color:var(--bg-tertiary);color:var(--text-primary);width:100%;max-width:400px;box-shadow:inset 0 1px 3px #0003}.filter-input:focus{border-color:var(--accent-primary);outline:none;box-shadow:0 0 0 2px #6200ee33,inset 0 1px 3px #0003}.filter-input::placeholder{color:var(--text-secondary);opacity:.7}.no-match-message{width:100%;text-align:center;color:var(--text-secondary);margin-top:10px;font-style:italic}.video-search-section{display:flex;gap:10px;margin-bottom:30px;justify-content:center;align-items:center;background-color:var(--bg-secondary);padding:15px;border-radius:var(--border-radius);box-shadow:var(--box-shadow);border:1px solid rgba(255,255,255,.05)}.search-input{padding:10px 14px;border:1px solid rgba(255,255,255,.1);border-radius:var(--border-radius);font-size:16px;transition:var(--transition);background-color:var(--bg-tertiary);color:var(--text-primary);width:200px;box-shadow:inset 0 1px 3px #0003;text-align:center}.search-input::-webkit-outer-spin-button,.search-input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.search-input[type=number]{-moz-appearance:textfield}.search-input:focus{border-color:var(--accent-primary);outline:none;box-shadow:0 0 0 2px #6200ee33,inset 0 1px 3px #0003}.search-input::placeholder{color:var(--text-secondary);opacity:.7}.search-button{background:linear-gradient(90deg,var(--accent-primary),var(--accent-secondary));color:#fff;border:none;border-radius:var(--border-radius);padding:10px 20px;font-size:16px;cursor:pointer;transition:var(--transition);font-weight:600}.search-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 8px #0000004d}.search-button:disabled{background:linear-gradient(90deg,#4a4a4a,#6a6a6a);cursor:not-allowed;opacity:.6}@media (max-width: 768px){.video-search-section{flex-direction:column;padding:15px}.search-input,.search-button{width:100%;max-width:250px}}@media (max-width: 768px){.validation-container,.video-section,.selection-section{padding:15px}.sign-options{gap:8px}.sign-button{min-width:100px;padding:10px 15px;font-size:14px}.video-player{aspect-ratio:4 / 3}.video-controls{padding:0 10px}.control-button{width:40px;height:40px}.submit-button{width:100%;padding:12px 20px}.completion-message{padding:30px 20px}.completion-message h2{font-size:1.5rem}.completion-message p{font-size:1rem}}@media (prefers-color-scheme: dark){:root{--bg-primary: #121212;--bg-secondary: #1e1e1e;--bg-tertiary: #2d2d2d;--text-primary: #ffffff;--text-secondary: #b0b0b0}}@media (prefers-color-scheme: light){:root{--bg-primary: #f5f5f5;--bg-secondary: #ffffff;--bg-tertiary: #e0e0e0;--text-primary: #121212;--text-secondary: #6e6e6e;--box-shadow: 0 4px 6px rgba(0, 0, 0, .05)}.video-player{border:1px solid #e0e0e0}.control-button{background-color:#0000001a;color:var(--text-primary)}.control-button:hover:not(:disabled){background-color:#6200ee1a}.not-recognized-container .sign-button{background-color:#cf66791a}.not-recognized-container .sign-button:hover{background-color:#cf667933}.not-recognized-container .sign-button.selected{background-color:#cf66794d}}@keyframes slideIn{0%{transform:translate(-20px);opacity:0}to{transform:translate(0);opacity:1}}.sign-button{animation:slideIn .3s ease-out;animation-fill-mode:both}.sign-options .sign-button:nth-child(1){animation-delay:.05s}.sign-options .sign-button:nth-child(2){animation-delay:.1s}.sign-options .sign-button:nth-child(3){animation-delay:.15}*{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #121212;--bg-secondary: #1e1e1e;--bg-tertiary: #2d2d2d;--text-primary: #ffffff;--text-secondary: #b3b3b3;--accent-primary: #6200ee;--accent-secondary: #bb86fc;--error: #cf6679;--success: #03dac6;--border-radius: 8px;--box-shadow: 0 4px 6px rgba(0, 0, 0, .3);--transition: all .3s ease;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--container-sm: 640px;--container-md: 768px;--container-lg: 1024px;--container-xl: 1280px}body{font-family:Inter,Segoe UI,Tahoma,Geneva,Verdana,sans-serif;line-height:1.6;color:var(--text-primary);background-color:var(--bg-primary);min-height:100vh;font-size:16px}.app-container{display:flex;flex-direction:column;min-height:100vh;max-width:100%;overflow-x:hidden}.app-header{background-color:var(--bg-secondary);color:var(--text-primary);padding:var(--spacing-md) var(--spacing-lg);display:flex;justify-content:space-between;align-items:center;box-shadow:var(--box-shadow);border-bottom:1px solid rgba(255,255,255,.1);position:sticky;top:0;z-index:100;transition:padding var(--transition)}.app-header h1{font-size:clamp(1.2rem,4vw,1.8rem);margin:0;font-weight:600;background:linear-gradient(90deg,var(--accent-secondary),var(--accent-primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;transition:font-size var(--transition)}.user-info{display:flex;align-items:center;gap:var(--spacing-md);color:var(--text-secondary);transition:gap var(--transition)}.logout-btn{background-color:transparent;border:1px solid var(--accent-primary);color:var(--accent-primary);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--border-radius);cursor:pointer;transition:var(--transition);font-weight:500;outline:none}.logout-btn:hover{background-color:#6200ee1a;transform:translateY(-2px);box-shadow:0 2px 8px #6200ee33}.logout-btn:focus{box-shadow:0 0 0 3px #6200ee4d}.logout-btn:active{transform:translateY(0)}.app-content{flex:1;padding:var(--spacing-lg);margin:0 auto;width:100%;max-width:var(--container-xl);animation:fadeIn .5s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.app-footer{background-color:var(--bg-secondary);padding:var(--spacing-md) var(--spacing-lg);text-align:center;color:var(--text-secondary);font-size:.9rem;border-top:1px solid rgba(255,255,255,.1)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--accent-primary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--accent-secondary)}@media (prefers-color-scheme: light){:root{--bg-primary: #f8f9fa;--bg-secondary: #ffffff;--bg-tertiary: #e9ecef;--text-primary: #212529;--text-secondary: #6c757d;--box-shadow: 0 4px 6px rgba(0, 0, 0, .1)}.app-header{border-bottom:1px solid rgba(0,0,0,.1)}.app-footer{border-top:1px solid rgba(0,0,0,.1)}}@media (min-width: 1200px){.app-content{padding:var(--spacing-xl)}.app-header{padding:var(--spacing-md) var(--spacing-xl)}}@media (max-width: 992px){.app-content{max-width:var(--container-lg);padding:var(--spacing-md)}}@media (max-width: 768px){.app-header{flex-direction:column;gap:var(--spacing-sm);text-align:center;padding:var(--spacing-md) var(--spacing-sm)}.user-info{flex-direction:column;gap:var(--spacing-sm);margin-top:var(--spacing-sm)}.app-content{padding:var(--spacing-md) var(--spacing-sm);max-width:100%}.logout-btn{width:100%}}@media (max-width: 480px){:root{--spacing-lg: 16px;--spacing-md: 12px;--spacing-sm: 6px}body{font-size:14px}.app-header h1{font-size:1.2rem}.app-footer{padding:var(--spacing-sm) var(--spacing-md);font-size:.8rem}}.app-header,.logout-btn,.app-footer{transition:all .3s ease}a:focus,button:focus,input:focus,select:focus,textarea:focus{outline:2px solid var(--accent-primary);outline-offset:2px}@media print{.app-header,.app-footer,.logout-btn{display:none}body{background-color:#fff;color:#000}.app-content{padding:0}}