*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;color:#fff;background:linear-gradient(135deg,#1a1a1a 0%,#2d2d2d 100%);min-height:100vh;touch-action:manipulation;-webkit-tap-highlight-color:transparent;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.hidden{display:none!important}.container{max-width:500px;margin:0 auto;padding:20px;min-height:100vh;display:flex;flex-direction:column;justify-content:center}.screen{display:none;min-height:100vh}.screen.active{display:block}.app-header{text-align:center;margin-bottom:40px}.app-header h1{font-size:3rem;font-weight:800;background:linear-gradient(45deg,#ff6b6b,#4ecdc4,#45b7d1);background-size:300% 300%;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:gradientShift 3s ease-in-out infinite;margin-bottom:10px}.app-header p{font-size:1.1rem;color:#ccc;font-weight:300}@keyframes gradientShift{0%,to{background-position:0% 50%}50%{background-position:100% 50%}}.setup-form{display:flex;flex-direction:column;gap:30px}.form-group{display:flex;flex-direction:column;gap:10px}.form-group label{font-size:1.1rem;font-weight:600;color:#fff}.help-text{font-size:.9rem;color:#aaa;margin-top:5px}.slider-container{display:flex;align-items:center;gap:15px}input[type=range]{flex:1;-webkit-appearance:none;-moz-appearance:none;appearance:none;height:8px;background:#333333;border-radius:4px;outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:24px;height:24px;background:linear-gradient(45deg,#ff6b6b,#4ecdc4);border-radius:50%;cursor:pointer;box-shadow:0 2px 8px #0000004d}input[type=range]::-moz-range-thumb{width:24px;height:24px;background:linear-gradient(45deg,#ff6b6b,#4ecdc4);border-radius:50%;cursor:pointer;border:none;box-shadow:0 2px 8px #0000004d}.duration-display{font-size:1.2rem;font-weight:600;color:#4ecdc4;min-width:50px;text-align:center}.upload-container{position:relative}.file-input{position:absolute;opacity:0;width:100%;height:100%;cursor:pointer}.upload-area{border:2px dashed #555555;border-radius:12px;padding:40px 20px;text-align:center;transition:all .3s ease;background:rgba(255,255,255,.05);cursor:pointer}.upload-area:hover,.upload-area.dragover{border-color:#4ecdc4;background:rgba(78,205,196,.1);transform:translateY(-2px)}.upload-icon{font-size:3rem;margin-bottom:15px}.upload-text{font-size:1.1rem;font-weight:600;margin-bottom:8px;color:#fff}.upload-formats{font-size:.9rem;color:#aaa}.file-info{display:flex;align-items:center;justify-content:space-between;padding:15px;background:rgba(78,205,196,.1);border:1px solid #4ecdc4;border-radius:8px;margin-top:10px}.filename{font-weight:600;color:#4ecdc4}.file-duration{color:#aaa;font-size:.9rem}.remove-file{background:none;border:none;color:#ff6b6b;font-size:1.5rem;cursor:pointer;padding:0;width:30px;height:30px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:background .2s ease}.remove-file:hover{background:rgba(255,107,107,.2)}.btn{padding:15px 30px;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:50px;touch-action:manipulation}.btn-primary{background:linear-gradient(45deg,#ff6b6b,#4ecdc4);color:#fff;box-shadow:0 4px 15px #4ecdc44d}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #4ecdc466}.btn-secondary{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.2)}.btn-secondary:hover{background:rgba(255,255,255,.2);transform:translateY(-1px)}.btn-danger{background:linear-gradient(45deg,#ff6b6b,#ff8e53);color:#fff}.btn-danger:hover{transform:translateY(-2px);box-shadow:0 6px 20px #ff6b6b66}.btn-large{padding:20px 40px;font-size:1.2rem;width:100%}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.countdown-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;text-align:center}.countdown-display{font-size:8rem;font-weight:800;color:#4ecdc4;margin-bottom:30px;text-shadow:0 0 30px rgba(78,205,196,.5);transform:translateZ(0);backface-visibility:hidden}.countdown-number{animation:countdownPulse 1s ease-in-out}.countdown-go{color:#ff6b6b;animation:countdownGo .5s ease-in-out}.countdown-text{font-size:1.5rem;color:#ccc;font-weight:300}@keyframes countdownPulse{0%{transform:scale(.8);opacity:0}50%{transform:scale(1.1);opacity:1}to{transform:scale(1);opacity:1}}@keyframes countdownGo{0%{transform:scale(1)}50%{transform:scale(1.2)}to{transform:scale(1)}}.game-container{display:flex;flex-direction:column;min-height:100vh;padding:20px}.game-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:40px}.timer-display{font-size:2rem;font-weight:700;color:#4ecdc4;font-family:Courier New,monospace}.word-counter{font-size:1.1rem;color:#aaa}.word-display-container{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;margin:40px 0;position:relative}.word-display{font-size:clamp(2rem,8vw,6rem);font-weight:800;text-align:center;transition:all .3s ease;will-change:transform,opacity;text-transform:uppercase;letter-spacing:.1em;text-shadow:0 0 20px rgba(255,255,255,.3);margin-bottom:20px}.word-preview{display:flex;flex-direction:column;gap:.3rem;text-align:center;opacity:.8;transition:opacity .3s ease}.next-word-display{display:flex;align-items:center;justify-content:center;gap:.3rem}.next-label{font-size:clamp(.8rem,2.5vw,1rem);color:#aaa;font-weight:600;text-transform:uppercase}.next-word-value{font-size:clamp(.9rem,3vw,1.2rem);color:#4ecdc4;font-weight:700;text-transform:uppercase;letter-spacing:.05em}.countdown-display{display:flex;align-items:center;justify-content:center;gap:.2rem}.countdown-label{font-size:clamp(.8rem,2.5vw,1rem);color:#aaa;font-weight:600;text-transform:uppercase}.countdown-value{font-size:clamp(1rem,3.5vw,1.4rem);color:#ff6b6b;font-weight:700;min-width:1.2em;text-align:center}.countdown-unit{font-size:clamp(.8rem,2.5vw,1rem);color:#aaa;font-weight:600}.word-display.enter{opacity:0;transform:translateY(30px) scale(.8)}.word-display.visible{opacity:1;transform:translateY(0) scale(1)}.word-display.used{color:#4ecdc4;transform:scale(1.1);text-shadow:0 0 30px rgba(78,205,196,.6)}.game-controls{display:flex;gap:15px;margin-bottom:30px}.game-controls .btn{flex:1}.recording-indicator{display:flex;align-items:center;justify-content:center;gap:10px;color:#ff6b6b;font-weight:600}.recording-dot{width:12px;height:12px;background:#ff6b6b;border-radius:50%;animation:recordingPulse 1.5s ease-in-out infinite}@keyframes recordingPulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.2)}}.results-header{text-align:center;margin-bottom:40px}.results-header h2{font-size:2.5rem;font-weight:700;color:#4ecdc4;margin-bottom:20px}.results-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:20px;margin-bottom:30px}.stat-item{text-align:center;padding:15px;background:rgba(255,255,255,.1);border-radius:8px}.stat-value{font-size:2rem;font-weight:700;color:#4ecdc4;display:block}.stat-label{font-size:.9rem;color:#aaa;margin-top:5px}.playback-section,.words-section,.actions-section{margin-bottom:40px}.playback-section h3,.words-section h3{font-size:1.5rem;margin-bottom:20px;color:#fff}.playback-controls{display:flex;gap:10px;margin-bottom:20px;flex-wrap:wrap}.playback-controls .btn{flex:1;min-width:120px}.playback-progress{background:rgba(255,255,255,.1);border-radius:8px;padding:15px}.progress-bar{width:100%;height:6px;background:#333333;border-radius:3px;overflow:hidden;margin-bottom:10px}.progress-fill{height:100%;background:linear-gradient(45deg,#ff6b6b,#4ecdc4);border-radius:3px;transition:width .1s ease;width:0%}.time-display{display:flex;justify-content:space-between;font-size:.9rem;color:#aaa;font-family:Courier New,monospace}.words-list{display:flex;flex-wrap:wrap;gap:10px}.word-item{padding:8px 15px;border-radius:20px;font-size:.9rem;font-weight:600}.word-item.used{background:rgba(78,205,196,.2);color:#4ecdc4;border:1px solid #4ecdc4}.word-item.unused{background:rgba(255,255,255,.1);color:#aaa;border:1px solid rgba(255,255,255,.2)}.actions-section{display:flex;gap:15px;flex-wrap:wrap}.actions-section .btn{flex:1;min-width:140px}.modal{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.8);display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}.modal-content{background:#2d2d2d;border-radius:12px;width:100%;max-width:400px;max-height:90vh;overflow-y:auto}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px 20px 0;margin-bottom:20px}.modal-header h3{font-size:1.5rem;color:#fff}.modal-close{background:none;border:none;color:#aaa;font-size:1.5rem;cursor:pointer;padding:5px;border-radius:50%;width:35px;height:35px;display:flex;align-items:center;justify-content:center}.modal-close:hover{background:rgba(255,255,255,.1);color:#fff}.modal-body{padding:0 20px 20px}.share-buttons{display:flex;flex-direction:column;gap:15px}.btn-social{justify-content:flex-start}.btn-social.twitter{background:#1da1f2;color:#fff}.btn-social.facebook{background:#1877f2;color:#fff}.btn-social.copy{background:rgba(255,255,255,.1);color:#fff}.modal-actions{display:flex;gap:15px;margin-top:20px}.modal-actions .btn{flex:1}.toast-container{position:fixed;top:20px;right:20px;z-index:1100;max-width:300px}.toast{background:#333333;color:#fff;padding:15px 20px;border-radius:8px;margin-bottom:10px;box-shadow:0 4px 12px #0000004d;animation:toastSlideIn .3s ease}.toast.success{background:#4ecdc4;color:#1a1a1a}.toast.error{background:#ff6b6b;color:#fff}@keyframes toastSlideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}.interaction-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.9);display:flex;align-items:center;justify-content:center;z-index:2000}.interaction-prompt{text-align:center;padding:40px;background:#2d2d2d;border-radius:12px;max-width:400px;margin:20px}.interaction-prompt h3{font-size:1.8rem;margin-bottom:15px;color:#4ecdc4}.interaction-prompt p{margin-bottom:30px;color:#aaa;font-size:1.1rem}@media (max-width: 480px){.container{padding:15px}.app-header h1{font-size:2.5rem}.countdown-display{font-size:6rem}.game-header{flex-direction:column;gap:10px;text-align:center}.game-controls,.playback-controls,.actions-section{flex-direction:column}.results-stats{grid-template-columns:repeat(2,1fr)}}@media (max-height: 600px){.container{justify-content:flex-start;padding-top:40px}.countdown-container{padding:40px 20px}.countdown-display{font-size:5rem}}@media (prefers-color-scheme: dark){body{background:linear-gradient(135deg,#0d1117 0%,#161b22 100%)}}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}