/* Layout: one rehearsal column with a fixed transport bar you can hit from across the room. Slugah colors: black ground with a faint slug tile, red marks the loop and the count. */
:root{
  --bg:#0a0909; --surface:#151314; --fg:#f4eeee; --muted:#9b9092; --line:#2f2a2b;
  --tape:#e5232d; --tape-fill:#e5232d; --tape-soft:rgba(229,35,45,.20); --tape-ink:#ffffff;
  --head:#f4eeee; --wave:#4b4244; --wave-in:#f4eeee; --stage:#000000; --stage-fg:#ffffff;
  --display:"Barlow Condensed","Arial Narrow",system-ui,sans-serif;
  --body:"Atkinson Hyperlegible",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:dark;
}

[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg) url("img/slug-tile.svg") 0 0/190px 220px;color:var(--fg);font-family:var(--body);font-size:15px;line-height:1.45}
.wrap{max-width:720px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
header{padding-top:env(safe-area-inset-top,0px)}
.top-in{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-block:14px}
.brand{font-family:var(--display);font-weight:700;font-size:22px;letter-spacing:.02em;text-transform:uppercase}
.brand{display:inline-flex;align-items:center}.brand i{font-style:normal;color:var(--tape);background:var(--tape-soft);padding:0 4px;margin:0 5px;position:relative}
/* the loop's A/B markers, drawn like the timeline's: a bar with a square tag at the top facing into the loop */
.brand i::before,.brand i::after{position:absolute;bottom:0;top:-13px;width:12px;font:700 9px/12px var(--body);color:var(--tape-ink);text-align:center}
.brand i::before{content:"A";left:-1px;background:linear-gradient(var(--tape),var(--tape)) left top/12px 12px no-repeat,linear-gradient(var(--tape),var(--tape)) left/2px 100% no-repeat}
.brand i::after{content:"B";right:-1px;background:linear-gradient(var(--tape),var(--tape)) right top/12px 12px no-repeat,linear-gradient(var(--tape),var(--tape)) right/2px 100% no-repeat}
/* the slug from the Slugah logo, smiling under the loop */
.brand .smile{position:absolute;left:calc(50% - 13.93px);top:calc(100% + 2.73px);width:24.36px;aspect-ratio:513/228;transform:rotate(-1.9deg);pointer-events:none}

button,.picker{font:inherit;color:var(--fg);background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 14px;cursor:pointer;-webkit-tap-highlight-color:transparent;touch-action:manipulation;display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px}
button:active{transform:translateY(1px)}
button:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--tape);outline-offset:2px}
/* song picker: a native select (the system picker on iPhone), truncated with an ellipsis when the title is long */
.picker{display:block;flex:0 1 auto;min-width:0;max-width:62%;font-weight:700;text-overflow:ellipsis;white-space:nowrap;overflow:hidden;
  -webkit-appearance:none;appearance:none;padding-right:34px;
  background:var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%239b9092' stroke-width='2'/%3E%3C/svg%3E") no-repeat right 13px center}
.brand{flex:none}

main{display:grid;gap:14px;padding-block:4px 120px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px}
.label{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:700}

/* empty state */
.empty{display:grid;gap:14px;padding:22px}
.empty h1{font-family:var(--display);font-weight:600;font-size:34px;line-height:1.05;margin:0;text-wrap:balance}
.empty ol{margin:0;padding-left:22px;display:grid;gap:8px;max-width:60ch}
.empty p{margin:0;color:var(--muted);max-width:60ch}

#app{display:grid;gap:14px}

/* stage */
.stage{position:relative;background:var(--stage);border-radius:14px;overflow:hidden;display:grid;place-items:center;min-height:96px}
.count{position:absolute;inset:0;display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:min(30vw,160px);color:var(--stage-fg);text-shadow:0 2px 24px rgba(0,0,0,.6);pointer-events:none}

/* waveform */
.wave-head{position:relative;display:flex;align-items:flex-end;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.hist{display:flex;gap:4px;margin-left:auto}
.icon{min-height:36px;width:36px;padding:0}
/* phones: two deliberate rows, zoom with undo/redo above, lead-in and speed below */
@media (max-width:520px){.wave-head{display:grid;grid-template-columns:auto auto 1fr auto;gap:8px 6px}.field{grid-area:1/1/2/4}.hist{grid-area:1/4}.lead{grid-area:2/1}.speed{grid-area:2/2}}
/* zoom: one strip in the chip style; square + and −, then fit to loop or song */
.zoom{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.zoom button{min-height:34px;padding:0 10px;border:0;border-radius:0;font-family:var(--display);font-weight:700;font-size:20px;line-height:1}.zoom button+button{border-left:1px solid var(--line)}.zoom .sq{width:34px;padding:0}
.canvas-wrap{position:relative;touch-action:none}
.recenter{position:absolute;right:6px;bottom:6px;min-height:32px;padding:4px 12px;font-size:13px;font-weight:700;background:var(--fg);color:var(--bg);border-color:var(--fg);box-shadow:0 2px 8px rgba(0,0,0,.5)}
canvas{display:block;width:100%;height:136px;border-radius:8px;background:var(--bg);cursor:text;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}
.status{font-size:13px;color:var(--muted);margin-top:8px}

/* eight-count strip */
.counter{display:flex;align-items:stretch;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:8px}
.counter .cell{flex:1;min-width:0;display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:28px;line-height:1;padding-block:10px;border-radius:8px;color:var(--muted);font-variant-numeric:tabular-nums}
.counter .and{width:14px;flex:none;display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--line);border-radius:6px}
.counter .cell.first{color:var(--fg)}
.counter .on{background:var(--tape-fill);color:var(--tape-ink)}
.counter .cell.first.on{color:var(--tape-ink)}
@media (max-width:420px){.counter .cell{font-size:24px}.counter .and{width:11px;font-size:11px}}

button:disabled{opacity:.4;cursor:default}

/* chip menus (lead-in, speed): a chip in the timeline header that opens a small popover of choices, hung from the header's left edge so it never runs off a phone screen */
.menu,.field{display:flex;flex-direction:column;align-items:flex-start;gap:3px}.speed{margin-left:6px}
.lead .chip{min-width:57px;justify-content:space-between} /* sized for "16 ▾" so picking 0, 8 or 16 never shifts the row */
.chip{min-height:36px;padding:4px 8px 4px 10px;font-family:var(--display);font-weight:700;font-size:20px;line-height:1;font-variant-numeric:tabular-nums}
.chip::after{content:"";width:7px;height:7px;border:solid var(--muted);border-width:0 2px 2px 0;transform:translateY(-2px) rotate(45deg);margin-left:2px}
.chip[aria-expanded="true"]{border-color:var(--tape)}
/* a small muted caption over a chip says what it sets */
.tag{padding-left:2px;font:700 10px/1 var(--body);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.pop{position:absolute;left:0;top:calc(100% + 6px);z-index:6;width:min(320px,100%);box-sizing:border-box;display:grid;gap:10px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px;box-shadow:0 10px 30px rgba(0,0,0,.6)}
.presets{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:6px}
.presets button{padding:0;font-family:var(--display);font-weight:700;font-size:20px;font-variant-numeric:tabular-nums;background:var(--bg)}
.presets button[aria-pressed="true"]{background:var(--tape-fill);border-color:var(--tape-fill);color:var(--tape-ink)}
.custom{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px}
.speed-val{font-family:var(--display);font-weight:700;font-size:20px;width:5.5ch;text-align:center;font-variant-numeric:tabular-nums;color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:8px 0;margin:0}
.speed-val:focus{border-color:var(--tape);outline:none}
input[type=range]{width:100%;min-width:0;accent-color:var(--tape);height:32px;margin:0}
.rate-note{margin:-4px 0 8px}.rate-note:empty{display:none}


/* transport */
.transport{position:fixed;left:0;right:0;bottom:0;background:var(--surface);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom,0px);z-index:5}
.tr-in{display:flex;align-items:center;gap:10px;padding-block:10px}
.play{flex:1;min-height:56px;font-size:20px;font-weight:700;background:var(--tape-fill);color:var(--tape-ink);border-color:var(--tape-fill);border-radius:12px}

@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* YouTube */
.yt{width:100%;aspect-ratio:16/9;max-height:42vh}
.yt iframe,.yt>div{width:100%;height:100%;display:block;border:0}
.note{font-size:13px;color:var(--muted);margin-top:6px;min-height:1.2em}
#srcNote:empty{display:none}
.empty code{font-size:13px;color:var(--fg)}
.status:empty{display:none}

/* desktop cheat-sheet in the right gutter, only when it fits beside the 720px column */
.cheat{display:none}
@media (min-width:1180px) and (hover:hover) and (pointer:fine){
  .cheat{display:block;position:fixed;top:76px;left:calc(50% + 376px);width:min(230px,calc(50vw - 384px));box-sizing:border-box;
    background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px 14px;font-size:13px;line-height:1.35;color:var(--muted)}
  .cheat h2{margin:0 0 8px}
  .cheat dl{display:grid;grid-template-columns:auto 1fr;gap:6px 10px;margin:0;align-items:baseline}
  .cheat dt{color:var(--fg);white-space:nowrap}.cheat dd{margin:0}
  .cheat p{margin:10px 0 0;padding-top:10px;border-top:1px solid var(--line)}.cheat b{color:var(--fg);font-weight:400}
  kbd{font:700 11px/1 var(--body);color:var(--fg);background:var(--bg);border:1px solid var(--line);border-bottom-width:2px;border-radius:5px;padding:2px 5px}
}