:root{--bg: #0a0a0a;--bg-elevated: #141414;--bg-card: #1a1a1a;--border: #2a2a2a;--border-strong: #3a3a3a;--text: #f5f1e8;--text-muted: #8a8478;--text-dim: #5a5448;--accent: #d4ff3a;--accent-dim: #8aa824;--warm: #ff7849;--cool: #4a9eff;--danger: #ff4a4a;--font-display: "Fraunces", Georgia, serif;--font-mono: "DM Mono", "SF Mono", Menlo, monospace}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{background:var(--bg);color:var(--text);font-family:var(--font-mono);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;overscroll-behavior:none}button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit}input{font-family:inherit;font-size:inherit;color:inherit}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:3px}.app{min-height:100vh;max-width:480px;margin:0 auto;padding:0 20px 48px;display:flex;flex-direction:column;gap:20px;position:relative}.topbar{position:sticky;top:0;z-index:20;background:var(--bg);display:flex;align-items:center;gap:12px;padding:14px 0 12px;border-bottom:1px solid var(--border);margin-bottom:4px}.topbar__brand{font-family:var(--font-display);font-weight:700;font-size:15px;letter-spacing:-.01em;color:var(--text)}.topbar__stage{flex:1;text-align:right;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--text-dim)}.topbar__menu-btn{width:36px;height:36px;border:1px solid var(--border);border-radius:4px;background:var(--bg-card);color:var(--text);font-size:16px;display:inline-flex;align-items:center;justify-content:center}.topbar__menu-btn:active{background:var(--bg-elevated)}.menu-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:30}.menu{position:fixed;top:60px;right:16px;z-index:40;width:min(280px,calc(100vw - 32px));background:var(--bg-elevated);border:1px solid 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em{font-style:italic;font-weight:400;color:var(--accent)}.header__sub{font-size:12px;color:var(--text-muted);margin-top:6px}.section{display:flex;flex-direction:column;gap:12px}.section__label{font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--text-dim)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:4px;padding:16px;display:flex;flex-direction:column;gap:12px}.card--accent{border-color:var(--accent-dim);background:linear-gradient(180deg,rgba(212,255,58,.03),transparent)}.row{display:flex;align-items:center;justify-content:space-between;gap:12px}.row__label{font-size:12px;color:var(--text-muted)}.row__value{font-family:var(--font-mono);font-size:13px;color:var(--text)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 20px;border-radius:2px;font-size:12px;letter-spacing:.1em;text-transform:uppercase;font-weight:500;transition:transform .1s ease,opacity .2s ease;border:1px solid transparent}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn--primary{background:var(--accent);color:#0a0a0a;font-weight:600}.btn--secondary{background:var(--bg-elevated);color:var(--text);border-color:var(--border)}.btn--ghost{background:transparent;color:var(--text-muted);border-color:var(--border)}.btn--danger{background:transparent;color:var(--danger);border-color:var(--danger)}.btn--block{width:100%}.auth{display:flex;flex-direction:column;gap:32px;margin-top:24px}.auth__hero{display:flex;flex-direction:column;gap:16px}.auth__big{font-family:var(--font-display);font-weight:900;font-size:56px;line-height:.9;letter-spacing:-.03em}.auth__big em{font-style:italic;font-weight:400;color:var(--accent)}.auth__lead{font-size:13px;color:var(--text-muted);max-width:320px;line-height:1.6}.auth__input{width:100%;background:var(--bg-card);border:1px solid var(--border);border-radius:2px;padding:12px 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auto;gap:12px;align-items:center}.track-row__main{min-width:0}.track-row__title{font-size:13px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.track-row__artist{font-size:11px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.track-row__bpm{font-family:var(--font-display);font-weight:700;font-size:18px;color:var(--accent);font-feature-settings:"tnum"}.track-row__bpm--missing{color:var(--text-dim);font-size:11px;font-family:var(--font-mono);font-weight:400;text-transform:uppercase;letter-spacing:.1em}.bpm-selector{display:flex;flex-direction:column;gap:12px}.bpm-display{font-family:var(--font-display);font-weight:900;font-size:96px;line-height:1;letter-spacing:-.04em;color:var(--accent);font-feature-settings:"tnum";text-align:center}.bpm-display__unit{font-family:var(--font-mono);font-size:14px;color:var(--text-dim);letter-spacing:.2em;text-transform:uppercase;display:block;margin-top:4px}.bpm-controls{display:flex;gap:8px;align-items:center;justify-content:center}.bpm-controls input[type=range]{flex:1;-webkit-appearance:none;height:2px;background:var(--border-strong);outline:none}.bpm-controls input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;background:var(--accent);border-radius:50%;cursor:pointer}.now-playing{padding:20px;background:var(--bg-card);border:1px solid var(--border);border-radius:4px;display:flex;flex-direction:column;gap:16px}.now-playing__bpm{font-family:var(--font-display);font-weight:700;font-size:14px;color:var(--accent);letter-spacing:.1em}.now-playing__title{font-family:var(--font-display);font-size:22px;font-weight:600;line-height:1.2}.now-playing__artist{font-size:13px;color:var(--text-muted)}.now-playing__controls{display:flex;gap:8px;margin-top:8px}.error-banner{background:#ff4a4a1a;border:1px solid var(--danger);border-radius:4px;padding:10px 12px;font-size:12px;color:var(--danger);display:flex;align-items:flex-start;gap:12px}.error-banner__msg{flex:1;line-height:1.5}.error-banner__close{color:var(--danger);font-size:16px;line-height:1;padding:0 4px;flex-shrink:0}.muted{color:var(--text-muted)}.dim{color:var(--text-dim)}.spin{display:inline-block;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.beat-pulse{width:10px;height:10px;background:var(--accent);border-radius:50%;display:inline-block;animation:beat .5s ease-in-out infinite}@keyframes beat{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.4);opacity:.6}}.tabs{display:flex;gap:4px;background:var(--bg-card);padding:4px;border-radius:4px;border:1px solid var(--border)}.tabs__item{flex:1;padding:10px;font-size:11px;letter-spacing:.12em;text-transform:uppercase;text-align:center;border-radius:2px;color:var(--text-muted);transition:all .15s}.tabs__item--active{background:var(--bg-elevated);color:var(--text)}.setup-range{width:100%;-webkit-appearance:none;height:2px;background:var(--border-strong);outline:none;border-radius:1px}.setup-range::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;background:var(--thumb-color, var(--accent));border-radius:50%;cursor:pointer}.range-ticks{display:flex;justify-content:space-between;font-size:10px;color:var(--text-dim);letter-spacing:.1em}.workout{display:flex;flex-direction:column;align-items:center;gap:20px;padding-top:8px;-webkit-user-select:none;user-select:none;touch-action:pan-y}.workout__phase-row{display:flex;align-items:center;justify-content:space-between;width:100%}.phase-badge{font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:#0a0a0a;padding:4px 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var(--border);border-radius:4px;color:var(--text);transition:background .12s,border-color .12s}.workout__ctrl:active{background:var(--bg-elevated);border-color:var(--border-strong)}.workout__ctrl--main{flex:1.4;background:var(--bg-elevated);border-color:var(--border-strong)}.workout__ctrl-icon{font-size:18px;line-height:1}.workout__ctrl-label{font-size:10px;letter-spacing:.12em;color:var(--text-muted);text-transform:uppercase}.finished{background:linear-gradient(180deg,rgba(212,255,58,.08),transparent);border:1px solid var(--accent-dim);border-radius:6px;padding:32px 20px;display:flex;flex-direction:column;align-items:center;gap:20px;text-align:center}.finished__title{font-family:var(--font-display);font-weight:800;font-size:32px;line-height:1.1;letter-spacing:-.02em;color:var(--accent)}.finished__stats{display:flex;gap:24px}.finished__stat{display:flex;flex-direction:column;align-items:center;gap:4px}.finished__stat-value{font-family:var(--font-display);font-weight:800;font-size:44px;line-height:1;color:var(--text)}.finished__stat--accent .finished__stat-value{color:var(--accent)}.finished__stat-label{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--text-muted)}.finished__msg{font-size:12px;color:var(--text-muted);line-height:1.6;max-width:320px}.finished .btn{width:100%;margin-top:4px}.screen-header{display:flex;flex-direction:column;gap:6px;padding-bottom:12px;border-bottom:1px solid var(--border)}.screen-header__step{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--text-dim)}.screen-header__title{font-family:var(--font-display);font-weight:800;font-size:28px;line-height:1.1;letter-spacing:-.02em;color:var(--text);margin:0}.screen-header__sub{font-size:12px;color:var(--text-muted);line-height:1.55;margin-top:2px}.screen-header__sub strong{color:var(--text);font-weight:600}.auth__help-toggle{align-self:flex-start;font-size:11px;letter-spacing:.1em;color:var(--text-muted);padding:4px 0;text-decoration:underline;text-underline-offset:3px}.auth__help-toggle:active{color:var(--text)}.auth__steps{margin:4px 0 0;padding:12px 14px 12px 32px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:4px;display:flex;flex-direction:column;gap:12px;font-size:12px;color:var(--text-muted);line-height:1.6}.auth__steps li::marker{color:var(--accent);font-weight:700}.auth__steps strong{color:var(--text);font-weight:600}.auth__link{color:var(--accent);text-decoration:underline;text-underline-offset:2px}.auth__copy-row{display:flex;align-items:stretch;gap:6px;margin-top:6px}.auth__code{flex:1;background:var(--bg);border:1px solid var(--border);border-radius:3px;padding:8px 10px;font-family:var(--font-mono);font-size:11px;color:var(--text);word-break:break-all;line-height:1.4}.auth__copy-btn{padding:0 12px;font-size:11px;letter-spacing:.08em;background:var(--bg-card);border:1px solid var(--border);border-radius:3px;color:var(--text-muted)}.auth__copy-btn:active{color:var(--text);background:var(--bg-elevated)}.bpm-preview{display:flex;flex-direction:column;gap:10px;padding:14px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:4px}.bpm-preview__label{font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--text-dim)}.bpm-preview__row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.bpm-preview__cell{display:flex;flex-direction:column;gap:4px}.bpm-preview__cell-label{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted)}.bpm-preview__cell-value{font-family:var(--font-display);font-weight:800;font-size:32px;line-height:1;letter-spacing:-.02em}.bpm-preview__cell-unit{font-family:var(--font-mono);font-size:10px;font-weight:400;margin-left:4px;color:var(--text-dim);letter-spacing:.15em}.bpm-preview__cell-sub{font-size:10px;color:var(--text-dim);letter-spacing:.05em}.bpm-preview__note{font-size:11px;color:var(--text-dim)}.row-actions{display:flex;gap:8px}.row-actions__cancel{flex:1}.row-actions__primary{flex:2}.timeline{display:flex;flex-direction:column;gap:10px;padding:14px;background:var(--bg-card);border:1px solid var(--border);border-radius:4px}.timeline__bar{display:flex;gap:2px;height:16px;border-radius:2px;overflow:hidden}.timeline__cell{flex:1;border-radius:1px}.timeline__cell--slow{background:var(--cool);opacity:.85}.timeline__cell--fast{background:var(--warm)}.timeline__legend{display:flex;justify-content:flex-start;gap:16px;font-size:11px;color:var(--text-muted)}.timeline__legend-item{display:inline-flex;align-items:center;gap:6px}.timeline__dot{width:8px;height:8px;border-radius:50%;display:inline-block}.timeline__dot--slow{background:var(--cool)}.timeline__dot--fast{background:var(--warm)}.row__value--accent{color:var(--accent);font-weight:600}.bpm-card__value{font-family:var(--font-display);font-size:28px;font-weight:800;letter-spacing:-.02em;line-height:1}.bpm-card__unit{font-family:var(--font-mono);font-size:11px;font-weight:400;margin-left:6px;color:var(--text-dim);letter-spacing:.15em}.btn--inline{padding:6px 10px;font-size:10px;letter-spacing:.08em}.btn--lg{padding:16px 22px;font-size:13px}.device-empty{display:flex;flex-direction:column;gap:10px}