:root{--bg: #12131a;--bg-raised: #1a1c26;--bg-input: #21242f;--border: #2c3040;--border-strong: #3b4056;--text: #e6e8f0;--text-dim: #9aa0b4;--text-faint: #6b7188;--accent: #7c9cff;--accent-dim: #5c76c4;--added: #3fb950;--removed: #f85149;--modified: #3fb950;--moved: #a371f7;--score-bg: #1b1e28;--score-border: #2c3040;--btn-hover-bg: #2a2e3c;--btn-hover-border: #4a5068;--tint-added: rgba(63, 185, 80, .24);--tint-added-edge: rgba(63, 185, 80, .7);--tint-removed: rgba(248, 81, 73, .24);--tint-removed-edge: rgba(248, 81, 73, .7);--tint-moved: rgba(163, 113, 247, .24);--tint-moved-edge: rgba(163, 113, 247, .7);--highlight-blend: normal;--strip-new-bg: rgba(63, 185, 80, .12);--strip-new-edge: rgba(63, 185, 80, .35);--strip-old-bg: rgba(248, 81, 73, .12);--strip-old-edge: rgba(248, 81, 73, .35);--banner-error-bg: rgba(248, 81, 73, .12);--banner-error-edge: rgba(248, 81, 73, .4);--banner-error-text: #ffb3ba;--banner-ok-bg: rgba(63, 185, 80, .1);--banner-ok-edge: rgba(63, 185, 80, .35);--banner-ok-text: #9ee8cd;--radius: 8px;--mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;--sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif}:root[data-theme=light]{--bg: #f4f6fa;--bg-raised: #ffffff;--bg-input: #ffffff;--border: #e2e5ee;--border-strong: #c6ccdb;--text: #14161d;--text-dim: #545b6d;--text-faint: #797f92;--accent: #3355cc;--accent-dim: #4463d4;--added: #1a7f37;--removed: #cf222e;--modified: #1a7f37;--moved: #8250df;--score-bg: #ffffff;--score-border: #dfe3ec;--btn-hover-bg: #eef1f7;--btn-hover-border: #aab2c6;--tint-added: rgba(26, 127, 55, .16);--tint-added-edge: rgba(26, 127, 55, .5);--tint-removed: rgba(207, 34, 46, .14);--tint-removed-edge: rgba(207, 34, 46, .5);--tint-moved: rgba(130, 80, 223, .14);--tint-moved-edge: rgba(130, 80, 223, .5);--highlight-blend: multiply;--strip-new-bg: rgba(26, 127, 55, .09);--strip-new-edge: rgba(26, 127, 55, .3);--strip-old-bg: rgba(207, 34, 46, .08);--strip-old-edge: rgba(207, 34, 46, .3);--banner-error-bg: rgba(207, 34, 46, .08);--banner-error-edge: rgba(207, 34, 46, .35);--banner-error-text: #a40e26;--banner-ok-bg: rgba(26, 127, 55, .08);--banner-ok-edge: rgba(26, 127, 55, .3);--banner-ok-text: #16632c}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:15px;line-height:1.5}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}.app{min-height:100vh;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;gap:20px;padding:12px 24px;background:var(--bg-raised);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}.topbar__brand{font-weight:700;font-size:17px;color:var(--text);letter-spacing:-.01em}.topbar__brand:hover{text-decoration:none}.topbar__spacer{flex:1}.topbar__user{color:var(--text-dim);font-size:14px}.container{width:100%;max-width:1200px;margin:0 auto;padding:24px}.container--wide{max-width:1600px}.page-header{display:flex;align-items:flex-start;gap:16px;margin-bottom:24px;flex-wrap:wrap}.page-header h1{margin:0;font-size:26px;letter-spacing:-.02em}.page-header p{margin:4px 0 0;color:var(--text-dim)}.page-header__actions{margin-left:auto;display:flex;gap:8px;align-items:center}.breadcrumb{color:var(--text-faint);font-size:14px;margin-bottom:6px}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:var(--radius);border:1px solid var(--border-strong);background:var(--bg-input);color:var(--text);cursor:pointer;transition:background .12s,border-color .12s}.btn:hover:not(:disabled){background:var(--btn-hover-bg);border-color:var(--btn-hover-border)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn--primary{background:var(--accent-dim);border-color:var(--accent);color:#fff}.btn--primary:hover:not(:disabled){background:var(--accent)}.btn--small{padding:5px 10px;font-size:13px}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field label{font-size:13px;color:var(--text-dim);font-weight:500}.field input,.field select,.field textarea{padding:9px 12px;border-radius:var(--radius);border:1px solid var(--border-strong);background:var(--bg-input);color:var(--text);width:100%}.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--accent-dim);outline-offset:-1px}.error-banner{padding:10px 14px;border-radius:var(--radius);background:var(--banner-error-bg);border:1px solid var(--banner-error-edge);color:var(--banner-error-text);margin-bottom:14px}.notice{padding:10px 14px;border-radius:var(--radius);background:var(--banner-ok-bg);border:1px solid var(--banner-ok-edge);color:var(--banner-ok-text);margin-bottom:14px}.empty{padding:48px 24px;text-align:center;color:var(--text-dim);border:1px dashed var(--border-strong);border-radius:var(--radius)}.card{background:var(--bg-raised);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.auth-card{max-width:400px;margin:80px auto}.auth-card h1{margin:0 0 4px;font-size:22px}.auth-card p.sub{margin:0 0 20px;color:var(--text-dim);font-size:14px}.song-grid{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.song-card{display:block;background:var(--bg-raised);border:1px solid var(--border);border-radius:var(--radius);padding:16px;color:inherit;transition:border-color .12s,transform .12s}.song-card:hover{border-color:var(--border-strong);text-decoration:none;transform:translateY(-1px)}.song-card__title{font-weight:600;font-size:16px}.song-card__artist{color:var(--text-dim);font-size:14px}.song-card__meta{margin-top:10px;color:var(--text-faint);font-size:13px}.version-list{display:flex;flex-direction:column;gap:2px}.version-row{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius);border:1px solid transparent;cursor:pointer;background:none;color:inherit;text-align:left;width:100%}.version-row:hover{background:var(--bg-input)}.version-row--active{border-color:var(--accent-dim);background:#7c9cff14}.version-row__main{flex:1;min-width:0}.version-row__main>.version-row__message,.version-row__main>.version-row__meta{display:block}.version-row__message{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.version-row__meta{color:var(--text-faint);font-size:13px}.version-row__hash{font-family:var(--mono);font-size:12px;color:var(--text-faint)}.avatar{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:600;color:#12131a;flex-shrink:0}.tab-viewer{position:relative}.tab-viewer__status{color:var(--text-dim);padding:16px}.tab-viewer__status--error{color:var(--banner-error-text)}.tab-viewer__surface{position:relative;background:var(--score-bg);border:1px solid var(--score-border);border-radius:var(--radius);overflow-x:auto;padding:8px}.tab-viewer__mount{position:relative}.tab-viewer__overlays{position:absolute;inset:8px;pointer-events:none}.bar-highlight{position:absolute;border:0;border-radius:3px;pointer-events:auto;padding:0;mix-blend-mode:var(--highlight-blend);transition:filter .1s}.bar-highlight:hover{filter:brightness(.92)}.bar-highlight__label{position:absolute;top:-7px;left:2px;font-size:9px;font-weight:700;color:#12131a;background:#ffffffe6;border-radius:2px;padding:0 3px;white-space:nowrap}.split{display:grid;gap:20px;grid-template-columns:1fr 1fr;align-items:start}@media(max-width:1100px){.split{grid-template-columns:1fr}}.layout-sidebar{display:grid;grid-template-columns:1fr 340px;gap:24px;align-items:start}@media(max-width:1000px){.layout-sidebar{grid-template-columns:1fr}}.panel-title{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint);margin:0 0 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0}.track-summary{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--border);margin-bottom:12px}.track-summary__name{font-weight:600}.stat{font-family:var(--mono);font-size:13px}.stat--added{color:var(--added)}.stat--removed{color:var(--removed)}.stat--modified{color:var(--modified)}.stat--moved{color:var(--moved)}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:16px}.tab{padding:8px 14px;border:0;background:none;color:var(--text-dim);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}.tab:hover{color:var(--text)}.tab--active{color:var(--text);border-bottom-color:var(--accent);font-weight:500}.mono{font-family:var(--mono);font-size:12.5px}.bar-line{font-family:var(--mono);font-size:12px;color:var(--text-dim);background:var(--bg-input);border-radius:4px;padding:4px 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var(--border-strong);border-radius:var(--radius);padding:20px;text-align:center;color:var(--text-dim);cursor:pointer}.file-drop:hover{border-color:var(--accent-dim);color:var(--text)}.file-drop input{display:none}