:root{--bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);--glass-bg: rgba(255, 255, 255, .05);--glass-border: rgba(255, 255, 255, .1);--text-primary: #f8fafc;--text-secondary: #94a3b8;--accent-color: #f97316;--accent-hover: #ea580c;--danger-color: #ef4444;--success-color: #10b981}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,sans-serif;background:var(--bg-gradient);color:var(--text-primary);min-height:100vh;display:flex;justify-content:center;align-items:center;padding:20px}.hidden{display:none!important}.app-container{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:24px;padding:40px;width:100%;max-width:600px;box-shadow:0 25px 50px -12px #00000080;animation:slideUp .5s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}header{text-align:center;margin-bottom:32px}header h1{font-weight:700;font-size:2rem;margin-bottom:8px;background:linear-gradient(to right,#f97316,#fb923c);-webkit-background-clip:text;-webkit-text-fill-color:transparent}header p{color:var(--text-secondary);font-size:.95rem}.drop-zone{border:2px dashed var(--glass-border);border-radius:16px;padding:48px 24px;text-align:center;cursor:pointer;transition:all .3s ease;background:#0003}.drop-zone:hover,.drop-zone.dragover{border-color:var(--accent-color);background:#f973160d}.upload-icon{color:var(--accent-color);margin-bottom:16px}.drop-zone h2{font-size:1.25rem;margin-bottom:8px}.drop-zone p{color:var(--text-secondary);font-size:.9rem}#video-preview-container{animation:fadeIn .4s ease-in}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}video{width:100%;border-radius:12px;margin-bottom:24px;background:#000;box-shadow:0 10px 15px -3px #0000004d}.trim-controls{background:#0003;border-radius:12px;padding:20px;margin-bottom:24px;border:1px solid var(--glass-border)}.trim-controls h3{font-size:1rem;margin-bottom:16px;color:#e2e8f0}.time-inputs{display:flex;gap:16px;margin-bottom:16px}.input-group{flex:1}.input-group label{display:block;font-size:.8rem;color:var(--text-secondary);margin-bottom:8px}.input-group input{width:100%;padding:10px 12px;border-radius:8px;border:1px solid var(--glass-border);background:#ffffff0d;color:#fff;font-family:monospace;font-size:1rem;outline:none;transition:border-color .2s}.input-group input:focus{border-color:var(--accent-color)}button{font-family:inherit;cursor:pointer;border:none;outline:none;transition:all .2s ease}.primary-btn{width:100%;padding:14px;background:var(--accent-color);color:#fff;font-weight:600;font-size:1.05rem;border-radius:12px;box-shadow:0 4px 6px -1px #f9731666}.primary-btn:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 10px 15px -3px #f9731680}.primary-btn:disabled{background:var(--text-secondary);cursor:not-allowed;transform:none;box-shadow:none}.secondary-btn{padding:8px 16px;background:transparent;border:1px solid var(--glass-border);color:var(--text-primary);border-radius:8px;font-size:.85rem}.secondary-btn:hover{background:#ffffff1a}.text-btn{display:block;width:100%;padding:12px;background:transparent;color:var(--text-secondary);text-align:center;text-decoration:underline}.text-btn:hover{color:var(--text-primary)}#progress-container{text-align:center;padding:20px 0}#progress-text{margin-bottom:16px;font-weight:400;color:#e2e8f0}.progress-bar-bg{width:100%;height:8px;background:#ffffff1a;border-radius:4px;overflow:hidden}.progress-bar-fill{height:100%;width:0%;background:linear-gradient(90deg,#f97316,#fb923c);border-radius:4px;transition:width .3s ease}#result-container{text-align:center;padding:20px 0;animation:fadeIn .5s ease-in}.success-icon{margin-bottom:16px}#result-container h3{margin-bottom:24px;font-size:1.5rem;color:var(--success-color)}.download-btn{display:inline-block;text-decoration:none;margin-bottom:16px}