*{margin:0;padding:0;box-sizing:border-box}:root{--bg-start: #1a1a2e;--bg-mid: #16213e;--bg-end: #0f3460;--panel-bg: rgba(255, 255, 255, .08);--panel-border: rgba(255, 255, 255, .12);--text-main: #e5e7eb;--text-sub: #9ca3af;--text-dim: #6b7280;--primary: #4a9eff;--danger: #ef4444;--success: #4ade80;--warning: #facc15}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:linear-gradient(135deg,var(--bg-start) 0%,var(--bg-mid) 50%,var(--bg-end) 100%);min-height:100vh;color:var(--text-main)}.app{max-width:840px;margin:0 auto;padding:20px}.app-header{text-align:center;margin-bottom:24px;padding:16px;background:#ffffff0d;border-radius:12px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.app-header h1{font-size:28px;color:#fff}.app-header-row{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.app-header-row h1{grid-column:2;justify-self:center}.app-header-row 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.device-select{min-width:220px}.volume-meter{width:110px;height:8px;background:#00000059;border-radius:4px;overflow:hidden}.volume-meter-fill{height:100%;background:linear-gradient(90deg,var(--success) 0%,var(--warning) 60%,var(--danger) 100%);transition:width .06s linear}.effect-control{margin-bottom:20px}.effect-control:last-child{margin-bottom:0}.effect-group-title{margin:4px 0 12px;font-size:13px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:#93c5fd}.effect-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;gap:12px}.effect-label{font-size:14px;font-weight:500;color:var(--text-main)}.effect-value{font-size:13px;color:var(--text-sub);min-width:60px;text-align:right}.effect-preset{padding:6px 12px;border-radius:6px;border:1px solid rgba(255,255,255,.2);background:#0000004d;color:#fff;font-size:13px;cursor:pointer}.slider-container{display:flex;align-items:center;gap:12px}.slider-min,.slider-max{font-size:12px;color:var(--text-dim);min-width:36px}.slider-max{text-align:right}input[type=range]{flex:1;height:6px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:#ffffff1f;border-radius:3px;cursor:pointer}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;border-radius:50%;background:var(--primary);cursor:pointer}input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--primary);cursor:pointer;border:none}.eq-controls{display:flex;flex-direction:column;gap:12px}.eq-band{display:flex;align-items:center;gap:12px}.eq-band-label,.eq-band-value{min-width:46px;font-size:13px;color:var(--text-sub)}.eq-band-value{text-align:right}.control-panel{display:flex;align-items:center;justify-content:center;gap:16px}.control-btn{padding:12px 24px;border-radius:8px;border:none;font-size:15px;font-weight:500;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}.control-btn.primary{background:linear-gradient(135deg,var(--primary) 0%,#6366f1 100%);color:#fff}.control-btn.primary:hover{transform:translateY(-1px);box-shadow:0 4px 12px #4a9eff66}.control-btn.primary.active{background:linear-gradient(135deg,#ef4444,#dc2626)}.control-btn.secondary{background:#ffffff1a;color:#fff;border:1px solid rgba(255,255,255,.2)}.control-btn.secondary.active{border-color:#fca5a5;color:#fecaca}.master-volume{display:flex;align-items:center;gap:12px;flex:1;max-width:320px}.master-volume-label{font-size:14px;color:var(--text-main);white-space:nowrap}.status-indicator{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-sub);flex-wrap:wrap}.control-status-inline{justify-content:flex-end}.status-state{display:inline-flex;align-items:center;gap:8px}.status-chip{padding:4px 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h2{margin-bottom:12px;color:#fff;font-size:22px}.permission-prompt p{margin-bottom:16px;color:var(--text-sub)}.permission-btn{padding:12px 28px;border-radius:8px;border:none;background:linear-gradient(135deg,var(--primary) 0%,#6366f1 100%);color:#fff;font-size:16px;font-weight:500;cursor:pointer}.preset-actions{display:flex;gap:8px}.preset-slots{display:flex;gap:8px;margin-top:8px}.preset-slot{flex:1;padding:10px 8px;border-radius:8px;border:1px solid rgba(255,255,255,.15);background:#0003;color:var(--text-dim);cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:4px;transition:all .2s ease;font-size:12px}.preset-slot.saved{border-color:#4a9eff73;color:var(--text-main)}.preset-slot.saved:hover{background:#4a9eff2e;border-color:var(--primary)}.preset-slot.save-mode{border-color:#facc1573}.preset-slot.save-mode:hover{background:#facc1529;border-color:var(--warning);color:#fef08a}.preset-slot-number{font-size:16px;font-weight:600}.preset-slot-status{font-size:11px}.preset-action-btn{padding:4px 12px;border-radius:6px;border:1px solid rgba(255,255,255,.2);background:#ffffff14;color:var(--text-main);font-size:13px;cursor:pointer}.preset-action-btn.active{background:#facc1533;border-color:var(--warning);color:#fde68a}.preset-action-btn:disabled{opacity:.5;cursor:not-allowed}.preset-feedback{margin-top:8px;color:#fde68a;font-size:12px}.checkbox-inline{display:flex;align-items:center;gap:6px;color:var(--text-sub);font-size:13px}.gate-indicator{margin-left:8px;font-size:11px;padding:2px 6px;border-radius:4px}.gate-indicator.open{background:#4ade8033;color:var(--success)}.gate-indicator.closed{background:#ef444433;color:var(--danger)}.error-message{background:#ef44441a;border:1px solid rgba(239,68,68,.3);border-radius:8px;padding:12px 16px;color:#fca5a5;font-size:14px;margin-bottom:16px;display:flex;align-items:center;justify-content:space-between;gap:16px}.error-dismiss{background:transparent;border:1px solid rgba(252,165,165,.35);border-radius:6px;color:#fecaca;padding:4px 10px;cursor:pointer;font-size:12px}@media (max-width: 768px){.app{padding:14px}.app-header h1{font-size:24px}.app-header-row{display:flex;flex-direction:column;align-items:center}.panel{padding:14px}.device-row{flex-direction:column;align-items:stretch}.device-label{min-width:auto}.volume-meter{width:100%}.control-panel{flex-direction:column;align-items:stretch}.control-btn{width:100%}.master-volume{max-width:100%}.panel-header-inline{align-items:flex-start}.control-status-inline{justify-content:flex-start}.preset-slots{flex-direction:column}.effect-header{flex-wrap:wrap}}