:root{--primary:#4f46e5;--primary-hover:#4338ca;--secondary:#0ea5e9;--bg:#f8fafc;--card-bg:#fff;--text-primary:#1e293b;--text-secondary:#64748b;--border:#e2e8f0;--success:#10b981;--danger:#ef4444;--waveform-bg:#f1f5f9;--waveform-border:#cbd5e1}[data-theme=dark]{--bg:#0f172a;--card-bg:#1e293b;--text-primary:#f1f5f9;--text-secondary:#94a3b8;--border:#334155;--waveform-bg:#1e293b;--waveform-border:#334155}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg);color:var(--text-primary);min-height:100vh;font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.6}.container{width:100%;max-width:98%;margin:0 auto;padding:1.5rem}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:.75rem;box-shadow:0 1px 3px #0000001a}.btn{cursor:pointer;border:1px solid #0000;border-radius:.5rem;align-items:center;gap:.5rem;padding:.5rem 1rem;font-size:.875rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-outline{background:var(--card-bg);border:1px solid var(--border);color:var(--text-primary)}.btn-outline:hover{background:var(--bg)}.btn-danger{background:var(--danger);color:#fff}.hidden{display:none!important}.player-container{background:var(--card-bg);border:1px solid var(--border);border-radius:1.5rem;flex-direction:column;gap:1.5rem;padding:1.5rem;display:flex;box-shadow:0 10px 25px -5px #0000000d,0 8px 10px -6px #0000000d}.player-header{justify-content:space-between;align-items:flex-start;display:flex}.file-info h3{color:var(--text-primary);margin-bottom:.25rem;font-size:1.25rem;font-weight:800}.file-info p{color:var(--text-secondary);font-size:.875rem}.header-timer{color:var(--text-primary);font-family:JetBrains Mono,Roboto Mono,monospace;font-size:1.25rem;font-weight:600}.waveform-outer{background:#f0f7ff;border:1px solid #e0f2fe;border-radius:1rem;padding:.5rem 0;position:relative;overflow:hidden}.timeline-container{margin-bottom:4px}.waveform-inner{margin:1rem 0}.minimap-container{opacity:.8;margin-top:.5rem}.player-controls-main{flex-direction:column;align-items:center;gap:2rem;padding-top:1rem;display:flex}.tool-bar{background:var(--bg);border:1px solid var(--border);border-radius:.75rem;gap:.5rem;padding:.5rem;display:flex}.tool-btn{background:var(--card-bg);border:1px solid var(--border);width:44px;height:44px;color:var(--text-secondary);cursor:pointer;border-radius:.5rem;justify-content:center;align-items:center;transition:all .2s;display:flex;position:relative}.tool-btn:hover{color:var(--primary);border-color:var(--primary);background:#f1f5f9}.tool-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}.tool-btn .label{font-size:1.1rem;font-weight:800}.bt-badge{color:#fff;white-space:nowrap;background:#3b82f6;border-radius:4px;padding:2px 6px;font-size:10px;font-weight:700;position:absolute;top:-10px;left:50%;transform:translate(-50%)}.tool-btn.active .bt-badge{color:var(--primary);background:#fff}.playback-controls{align-items:center;gap:2.5rem;display:flex}.play-btn{background:var(--text-primary);color:#fff;cursor:pointer;border:none;border-radius:50%;justify-content:center;align-items:center;width:72px;height:72px;transition:all .2s;display:flex;box-shadow:0 4px 12px #0000001a}.play-btn:hover{background:#000;transform:scale(1.1)}.nav-btn{color:var(--text-primary);cursor:pointer;background:0 0;border:none;transition:all .2s}.nav-btn:hover{color:var(--primary)}.adjustment-grid{grid-template-columns:1fr 1fr;gap:2rem;width:100%;display:grid}.adj-group{flex-direction:column;align-items:center;gap:.5rem;display:flex}.adj-group label{color:var(--text-secondary);letter-spacing:.05em;font-size:.75rem;font-weight:700}.adj-control{background:var(--bg);border-radius:999px;justify-content:space-between;align-items:center;width:100%;padding:.25rem;display:flex}.adj-control button{border:1px solid var(--border);background:var(--card-bg);cursor:pointer;width:32px;height:32px;color:var(--text-secondary);border-radius:50%;justify-content:center;align-items:center;font-size:1.25rem;display:flex}.adj-control .value{color:var(--text-primary);font-size:.9rem;font-weight:700}.btn-save-segment{background:var(--success);color:#fff;cursor:pointer;border:none;border-radius:1rem;justify-content:center;align-items:center;gap:.75rem;margin-top:1rem;padding:1rem;font-weight:700;transition:all .2s;display:flex}.btn-save-segment:hover{opacity:.9;transform:translateY(-2px)}.empty-state{background:linear-gradient(#fff,#f8fafc);justify-content:center;align-items:center;height:400px;display:flex}.empty-state-content{text-align:center}.empty-icon{filter:drop-shadow(0 0 10px #4f46e533);margin-bottom:1.5rem;font-size:4rem}.empty-state h3{color:var(--text-primary);margin-bottom:.5rem;font-size:1.5rem}.empty-state p{color:var(--text-secondary)}.app-header{margin-bottom:1rem!important;padding:.75rem 1rem!important}@media (max-width:480px){.app-header{padding:.5rem!important}.logout-text{display:none}.btn-outline{padding:.4rem!important}}@keyframes skeletonPulse{0%,to{opacity:1}50%{opacity:.4}}@media (max-width:640px){.player-container{padding:1rem}.playback-controls{gap:1.5rem}.play-btn{width:60px;height:60px}.adjustment-grid{grid-template-columns:1fr;gap:1rem}}