:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:15px;color-scheme:dark;--bg:#111313;--panel:#1b1f1e;--text:#f0f3f1;--muted:#a0aaa5;--border:#35413b;--accent:#7be2a6;--accent-text:#10291c;--danger:#ffb1a8;--key:#fff;--black:#171c19;letter-spacing:0}
:root[data-theme=light]{color-scheme:light;--bg:#f5f7f6;--panel:#fff;--text:#17221d;--muted:#56635b;--border:#cdd7d0;--accent:#167449;--accent-text:#fff;--danger:#9b2b21;--key:#fff;--black:#17221d}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}[hidden]{display:none!important}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{border:1px solid var(--border);border-radius:6px;color:var(--text);background:var(--panel);padding:10px 16px;cursor:pointer;font-weight:600}button:hover{border-color:var(--accent)}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:3px}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}.primary{background:var(--accent);color:var(--accent-text);border-color:var(--accent)}.quiet{background:transparent}.app-header{max-width:1200px;margin:auto;padding:20px 28px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}.brand{display:flex;gap:12px;align-items:center;font-size:19px;font-weight:700}.brand img{border-radius:8px;object-fit:cover}.theme-switch{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:13px}.theme-switch input{accent-color:var(--accent)}main{max-width:1200px;margin:auto;padding:36px 28px 60px;min-height:calc(100svh - 160px)}.home-heading{margin:10px 0 32px}.eyebrow{font-size:11px;font-weight:700;color:var(--muted);letter-spacing:0;margin:0 0 8px}h1{font-size:36px;line-height:1.15;margin:0 0 12px}h2{font-size:18px;margin:0 0 14px}.slogan{color:var(--muted);font-size:18px;margin:0}.source-tabs,.instrument-tabs{display:flex;border-bottom:1px solid var(--border);gap:8px}.source-tabs button,.instrument-tabs button{background:none;border:0;border-radius:0;padding:12px 16px;min-height:44px;position:relative;font-size:14px;color:var(--muted)}[role=tab][aria-selected=true]{color:var(--accent);box-shadow:0 2px 0 var(--accent)}.source-panel{min-height:254px;padding:28px 0}.source-panel>p{color:var(--muted);line-height:1.6}.drop-zone{text-align:center;border:1px dashed var(--border);border-radius:8px;padding:24px}.drop-zone.dragging{border-color:var(--accent);background:var(--panel)}.music-mark{font-size:32px;color:var(--accent);display:block;margin-bottom:9px}.drop-zone h2{font-size:20px}.drop-zone .primary{min-width:178px}.drop-zone p{color:var(--muted);font-size:13px;margin-bottom:0}.library-heading,.timeline-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:30px;border-bottom:1px solid var(--border);padding-bottom:14px}.library-heading h2,.timeline-heading h2{margin:0}#plan-line,#chord-count{font-size:12px;color:var(--muted)}.recent-list{margin-top:5px}.empty{color:var(--muted);font-size:14px;padding:28px 0}.recent-song{display:flex;gap:15px;align-items:center;padding:16px 0;border-bottom:1px solid var(--border)}.song-open{border:0;background:transparent;padding:0;text-align:left;flex:1;min-width:0}.song-open strong{display:block;font-size:15px;overflow-wrap:anywhere}.song-open small{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:5px}.song-delete{padding:7px 12px;font-size:12px}.url-row{display:flex;gap:10px;margin-top:8px}.url-row input{min-width:0;flex:1;background:var(--panel);border:1px solid var(--border);border-radius:5px;padding:12px;color:var(--text)}.record-status{display:flex;align-items:center;gap:16px;margin:20px 0}#record-dot{height:10px;width:10px;border-radius:50%;background:var(--muted)}#record-dot.active{background:#f66}#record-timer{font-size:28px;font-variant-numeric:tabular-nums}meter{width:160px;height:18px}.record-actions{display:flex;gap:10px;flex-wrap:wrap}#record-preview{width:100%;max-width:450px;margin-top:20px}#notice{border:1px solid var(--danger);color:var(--danger);border-radius:6px;padding:12px 16px;display:flex;gap:12px;align-items:center;margin-bottom:24px;font-size:14px;line-height:1.5}#notice-text{flex:1}#notice-close{border:0;background:transparent;padding:0 8px;font-size:22px}#notice-upload{font-size:12px}#analyzing{text-align:center;padding:70px 0}#analysis-title{font-size:28px}#analysis-status{font-size:17px}#analysis-detail{color:var(--muted)}.spinner{width:38px;height:38px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 25px}@keyframes spin{to{transform:rotate(360deg)}}.song-heading{margin-bottom:30px}#back-home{padding:7px 0;border:0;color:var(--muted);font-size:13px;margin-bottom:16px}#song-title{display:block;background:transparent;border:0;color:var(--text);font-weight:700;font-size:27px;width:100%;padding:0;min-width:0}.song-meta{display:flex;flex-wrap:wrap;gap:18px;font-size:13px;color:var(--muted);margin-top:13px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:40px}.playback-column{min-width:0}.instrument-column{border-left:1px solid var(--border);padding-left:30px;min-width:0}.current-row{display:flex;gap:30px;align-items:center;justify-content:space-between;padding:25px 0 30px;min-height:140px}#current-chord{font-size:48px;font-weight:700;color:var(--accent);line-height:1.2;overflow-wrap:anywhere}.next-chord{min-width:70px;text-align:right}#next-chord{font-size:22px;color:var(--muted);overflow-wrap:anywhere}.transport{display:flex;gap:12px;align-items:center;padding:18px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.play-button{min-width:76px;background:var(--accent);color:var(--accent-text);border-color:var(--accent)}.transport output{font-size:12px;font-variant-numeric:tabular-nums;color:var(--muted)}input[type=range]{accent-color:var(--accent);width:100%;min-width:0;cursor:pointer}.player-options{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 0}.player-options label{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}select{border:1px solid var(--border);background:var(--panel);color:var(--text);padding:6px 8px;border-radius:4px}.transpose{display:flex;align-items:center;gap:9px;font-size:13px;flex-wrap:wrap}.transpose button{font-size:19px;width:34px;height:34px;padding:0}.transpose output{min-width:18px;text-align:center;font-variant-numeric:tabular-nums}.muted{color:var(--muted);font-size:12px;line-height:1.6}.timeline-heading{margin-top:12px}.timeline{display:grid;grid-template-columns:repeat(auto-fill,minmax(90px,1fr));gap:8px;margin-top:16px;max-height:360px;overflow-y:auto;overscroll-behavior:contain;padding:3px}.chord-box{padding:12px 8px;text-align:left;min-height:62px;min-width:0;border-radius:5px;overflow-wrap:anywhere}.chord-box span{display:block;font-weight:700;font-size:17px}.chord-box small{display:block;font-size:10px;font-weight:400;color:var(--muted);margin-top:6px}.chord-box.active{border-color:var(--accent);background:var(--accent);color:var(--accent-text)}.chord-box.active small{color:var(--accent-text)}.sections{display:flex;gap:3px;overflow-x:auto;margin-bottom:12px;padding-bottom:3px}.section-block{border:0;border-radius:3px;font-size:11px;white-space:nowrap;min-width:70px;color:#101919}.section-block:nth-child(4n+1){background:#a6dac3}.section-block:nth-child(4n+2){background:#d5d791}.section-block:nth-child(4n+3){background:#abbde4}.section-block:nth-child(4n){background:#e1b7bc}.instrument-column h2{text-align:center;margin:24px 0 10px;font-size:25px;overflow-wrap:anywhere}.diagram{display:block;width:100%;padding:0;border:0;background:transparent;height:265px;overflow:hidden;position:relative;color:var(--text);border-radius:0}.diagram svg{width:100%;height:100%}.diagram:hover{background:var(--panel)}.shape-controls{display:flex;justify-content:center;gap:20px;align-items:center;margin-top:16px;min-height:36px}.shape-controls button{height:34px;width:34px;padding:0;font-size:24px}.shape-controls span{font-size:12px;color:var(--muted)}#diagram-notes{text-align:center;overflow-wrap:anywhere}.piano-keyboard{display:flex;position:relative;width:100%;height:165px;margin-top:50px}.piano-key{flex:1;background:var(--key);border:1px solid #9eaaa2;border-radius:0 0 4px 4px;position:relative;min-width:0}.piano-key.black{position:absolute;top:0;width:4.5%;height:62%;z-index:1;background:var(--black);border:1px solid #4b5750}.piano-key.sounded{background:var(--accent)}.piano-key.bass{box-shadow:inset 0 -12px 0 #e5b561}.piano-key span{position:absolute;bottom:14px;left:0;right:0;color:#18231d;font-size:10px;font-weight:600}.piano-key.black span{color:#fff;bottom:10px}.piano-key.black.sounded span{color:var(--accent-text)}#youtube-frame-wrap{aspect-ratio:16/9;width:100%;min-height:200px;background:#000;border-radius:5px;overflow:hidden}#youtube-frame-wrap iframe{width:100%;height:100%;min-height:200px;display:block}footer{border-top:1px solid var(--border);max-width:1200px;margin:auto;padding:22px 28px;display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}footer nav{display:flex;gap:24px}
@media(max-width:760px){.app-header{padding:16px 20px}main{padding:26px 20px 40px}.brand{font-size:17px}.home-heading{margin-bottom:24px}h1{font-size:30px}.slogan{font-size:16px}.source-tabs{gap:0}.source-tabs button{padding:12px 11px;font-size:13px}.workspace{grid-template-columns:minmax(0,1fr);gap:24px}.instrument-column{border-left:0;border-top:1px solid var(--border);padding:20px 0 0}.diagram{max-width:330px;margin:auto}.instrument-tabs{justify-content:center}.instrument-column h2{margin-top:20px}.player-options{flex-wrap:wrap;gap:18px}.transpose{margin-left:auto}.transport{gap:8px}.play-button{min-width:62px;padding:10px 8px}#current-chord{font-size:40px}.url-row{flex-wrap:wrap}.url-row input{flex-basis:100%}.library-heading{align-items:flex-start;flex-direction:column;gap:8px}#notice{flex-wrap:wrap}.timeline{max-height:280px}footer{padding:20px}.piano-keyboard{max-width:330px;margin:45px auto 0}#song-title{font-size:23px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto!important}}

/* Shared with BandMateTheme.swift. */
:root {
  font-family: ui-rounded, "SF Pro Rounded", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --navy: #0B1B2D;
  --navy-deep: #050A10;
  --deep: var(--navy-deep);
  --panel: #14283A;
  --panel-raised: #192F42;
  --raised: var(--panel-raised);
  --ivory: #F8F6ED;
  --muted: #A3A9AF;
  --amber: #F4B23C;
  --amber-soft: #FFCF70;
  --soft: var(--amber-soft);
  --blue: #3B82F6;
  --green: #32C77A;
  --bg: var(--navy);
  --text: var(--ivory);
  --border: rgb(255 255 255 / 11%);
  --accent: var(--amber);
  --accent-text: var(--deep);
  --danger: #FFB4AB;
  --key: var(--ivory);
  --black: var(--deep);
  --focus: var(--soft);
  --radius: 18px;
}
:root[data-theme=light] {
  --bg: #F8F6ED;
  --navy-deep: #E9EDF1;
  --panel: #FFFFFF;
  --panel-raised: #EDF2F6;
  --text: #0B1B2D;
  --muted: #526171;
  --border: rgb(11 27 45 / 18%);
  --accent: #F4B23C;
  --accent-text: #050A10;
  --danger: #AD302C;
  --key: #FFFFFF;
  --black: #0B1B2D;
  --focus: #185ABD;
}
body { min-width: 280px; min-height: 100svh; background: linear-gradient(145deg, var(--bg), var(--deep)); }
button, input, select { border-radius: 12px; }
button { min-height: 54px; background: var(--raised); transition: background-color .15s, border-color .15s; }
button:hover { border-color: var(--accent); }
button:disabled { opacity: .55; }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
  outline: 3px solid var(--focus); outline-offset: 4px;
}
input[type=checkbox] { width: 20px; height: 20px; }
.primary, .play-button { background: var(--amber); color: #050A10; border-color: var(--amber); }
.primary:hover, .play-button:hover { background: var(--soft); border-color: var(--soft); }
.app-header { padding: 20px; gap: 16px; }
.brand { font-size: 20px; min-width: 0; }
.brand span { overflow-wrap: anywhere; }
.brand img { border-radius: 12px; flex-shrink: 0; }
.theme-switch { min-height: 44px; flex-shrink: 0; }
main { padding: 36px 20px 64px; }
.home-heading { margin: 8px 0 32px; }
h1 { font-size: 34px; line-height: 1.2; }
h2 { font-size: 20px; }
.eyebrow { color: var(--muted); font-size: 11px; line-height: 1.6; }
.slogan { font-size: 17px; line-height: 1.5; }
.source-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; border: 0; }
.source-tabs button {
  min-height: 88px; padding: 18px 12px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--panel); color: var(--text);
  font-size: 15px; overflow-wrap: anywhere; box-shadow: none;
}
.source-tabs [aria-selected=true] { color: var(--text); border-color: var(--amber); background: var(--raised); box-shadow: inset 0 -3px 0 var(--amber); }
.source-panel { padding: 24px 0; min-height: 280px; }
.drop-zone { border-radius: var(--radius); padding: 28px 20px; border-color: var(--muted); }
.drop-zone.dragging { background: var(--raised); }
.music-mark { color: var(--amber); }
.drop-zone p { line-height: 1.6; }
.library-heading { margin-top: 24px; padding-bottom: 18px; }
.recent-list { display: grid; gap: 10px; margin-top: 16px; }
.recent-song { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; gap: 12px; }
.song-open { background: transparent; border-radius: 4px; }
.song-open:hover { background: transparent; }
.song-delete { min-height: 54px; }
.url-row input { min-height: 54px; border-radius: 12px; }
.url-row input::placeholder { color: var(--muted); opacity: 1; }
#record-dot.active { background: var(--green); }
.record-status { flex-wrap: wrap; }
meter { accent-color: var(--green); max-width: 100%; }
#notice { border-radius: var(--radius); background: var(--panel); }
#notice-close { min-width: 44px; min-height: 44px; }
#analyzing { padding: 80px 0; }
.spinner { border-top-color: var(--amber); }
.song-heading { margin-bottom: 24px; }
#back-home { min-height: 54px; padding: 8px 0; margin-bottom: 12px; }
#song-title { font-size: 28px; min-height: 54px; border-radius: 4px; }
.song-meta { gap: 10px 20px; line-height: 1.6; }
.workspace { grid-template-columns: minmax(0, 1fr); gap: 28px; align-items: start; }
.instrument-column { position: static; padding: 24px 0 0; border-left: 0; border-top: 1px solid var(--border); }
.current-row { min-height: 200px; padding: 24px 0 32px; gap: 20px; }
.current-row > div:first-child { min-width: 0; }
#current-chord { font-size: 72px; line-height: 1.15; color: var(--amber); }
:root[data-theme=light] #current-chord { color: var(--text); }
.next-chord { flex-shrink: 0; max-width: 35%; }
#next-chord { font-size: 28px; }
.transport { gap: 12px; padding: 16px 0; }
.transport output { flex-shrink: 0; }
.play-button { min-width: 76px; }
input[type=range] { min-height: 44px; }
select { min-height: 54px; padding: 10px 12px; }
.player-options { gap: 16px; flex-wrap: wrap; }
.transpose { gap: 10px; margin: 24px 0 0; justify-content: center; }
#transpose-key { flex-basis: 100%; text-align: center; overflow-wrap: anywhere; }
.transpose button { width: 54px; height: 54px; min-height: 54px; }
.timeline { grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 10px; max-height: 440px; padding: 5px; }
.chord-box { border-radius: 14px; min-height: 78px; padding: 14px 12px; background: var(--panel); }
.chord-box span { font-size: 20px; }
.chord-box small { font-size: 11px; }
.chord-box.active { background: var(--amber); color: #050A10; border-color: var(--soft); }
.chord-box.active small { color: #050A10; }
.sections { gap: 6px; padding: 4px 4px 8px; }
.section-block { border-radius: 10px; min-height: 44px; color: #050A10; }
.section-block:nth-child(4n+1) { background: var(--green); }
.section-block:nth-child(4n+2) { background: var(--soft); }
.section-block:nth-child(4n+3) { background: var(--blue); color: #050A10; }
.section-block:nth-child(4n) { background: var(--ivory); }
.instrument-tabs { gap: 4px; }
.instrument-tabs button { flex: 1; min-height: 54px; padding: 12px 8px; border-radius: 10px 10px 0 0; }
.instrument-tabs [aria-selected=true] { color: var(--text); box-shadow: inset 0 -3px 0 var(--amber); background: var(--raised); }
.instrument-column h2 { font-size: 36px; margin: 26px 0 14px; }
.diagram { height: 290px; border-radius: var(--radius); }
.shape-controls { gap: 18px; min-height: 54px; }
.shape-controls button { width: 54px; height: 54px; }
.piano-keyboard { height: 180px; }
.piano-key { border-color: #A3A9AF; }
.piano-key.black { border-color: #526171; }
.piano-key span { color: #0B1B2D; }
.piano-key.black span { color: #F8F6ED; }
.piano-key.bass { box-shadow: inset 0 -12px 0 var(--soft); }
#youtube-frame-wrap { border-radius: var(--radius); }
footer { padding: 24px 20px; gap: 20px; flex-wrap: wrap; }
footer a { display: inline-flex; align-items: center; min-height: 44px; }
@media (min-width: 1024px) {
  .recent-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .workspace { grid-template-columns: minmax(0, 1fr) minmax(300px, 360px); gap: 32px; }
  .instrument-column { position: sticky; top: 24px; padding: 0 0 0 28px; border-top: 0; border-left: 1px solid var(--border); }
}
@media (width < 768px) {
  .app-header { padding: 16px 20px; }
  .brand { font-size: 17px; gap: 10px; }
  main { padding: 24px 20px 40px; }
  h1 { font-size: 30px; }
  .source-tabs { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .source-tabs button { font-size: 15px; padding: 14px 16px; min-height: 54px; text-align: left; }
  .source-panel { min-height: 280px; padding: 20px 0; }
  .drop-zone { padding: 24px 16px; }
  .workspace { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .instrument-column { position: static; padding: 24px 0 0; border-left: 0; border-top: 1px solid var(--border); }
  .current-row { min-height: 180px; }
  .current-row > div:first-child { flex: 1; }
  .next-chord { min-width: 0; max-width: 25%; }
  #current-chord { font-size: 48px; }
  #next-chord { font-size: 24px; }
  #song-title { font-size: 24px; }
  .transport {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 20;
    background: var(--panel); border-top: 1px solid var(--border); border-bottom: 0;
    padding: 12px 20px calc(12px + env(safe-area-inset-bottom, 0px)); gap: 8px;
    box-shadow: 0 -8px 28px rgb(0 0 0 / 18%);
  }
  .transport output { font-size: 11px; }
  .play-button { min-width: 62px; padding: 10px 8px; }
  body:has(#song:not([hidden])) { padding-bottom: calc(100px + env(safe-area-inset-bottom, 0px)); }
  .player-options { gap: 16px; }
  .transpose { margin-left: 0; }
  .timeline { max-height: 360px; }
  .chord-box span { font-size: 16px; }
  .diagram { max-width: 350px; }
  .url-row button { width: 100%; }
  .url-row { flex-wrap: wrap; }
  .url-row input { flex-basis: 100%; }
  .library-heading { align-items: flex-start; flex-direction: column; gap: 8px; }
  #notice { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
/* Account controls share the existing app palette. */
#account-dialog{width:min(480px,calc(100% - 40px));max-height:85dvh;overflow:auto;background:var(--panel);color:var(--ivory);border:1px solid var(--border);border-radius:18px;padding:18px}
#account-dialog::backdrop{background:rgba(0,0,0,.65)}
.account-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}
#account-dialog form,#account-details{display:grid;gap:12px}
#account-dialog form[hidden],#account-details[hidden]{display:none}
#account-dialog input{box-sizing:border-box;width:100%;min-width:0}
.account-provider{display:block;margin-block:12px;padding:14px;border:1px solid var(--border);border-radius:8px;color:inherit;text-align:center}
.account-provider[hidden]{display:none}
#account-address{overflow-wrap:anywhere}