/* RainzBeatz Studio. Dark studio console in the RainzBeatz website colours:
   the site's near-black surfaces with its cyan as the single accent. */
:root {
  --bg: #09090b;
  --bar: #0d0d10;
  --panel: #18181b;
  --panel-2: #222226;
  --deep: #111114;
  --line: #2a2a2f;
  --line-2: #3a3a42;
  --fg: #f4f4f6;
  --muted: #8c8c97;
  --accent: #00b3ff;
  --accent-fg: #09090b;
  --accent-dim: #0b3a52;
  --accent-glow: rgba(0, 179, 255, 0.4);
  --danger: #ff4d5e;
  --step-a: #232328;
  --step-b: #1f2832;
  --ok: #4fd88f;
  --warn: #ffb547;
  --lcd: #08080a;
  --meter: linear-gradient(0deg, #4fd88f 0%, #4fd88f 60%, #ffb547 82%, #ff3f3f 100%);
  --meter-h: linear-gradient(90deg, #4fd88f 0%, #4fd88f 60%, #ffb547 82%, #ff3f3f 100%);
  --f-display: 'Orbitron', 'Segoe UI', system-ui, sans-serif;
  --f-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --f-mono: 'JetBrains Mono', ui-monospace, Menlo, Consolas, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 14px/1.45 var(--f-body); -webkit-font-smoothing: antialiased; }
[hidden] { display: none !important; }
button, input, select { font: inherit; color: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
input[type='range'] { accent-color: var(--accent); margin: 0; }

.studio { display: flex; flex-direction: column; }

/* --------------------------------------------- website header (same as site) */
.site-nav { position: relative; z-index: 40; background: rgba(9, 9, 11, 0.92); border-bottom: 1px solid var(--line); }
.site-nav-inner { max-width: 1200px; margin: 0 auto; padding: 0 16px; height: 62px; display: flex; align-items: center; justify-content: space-between; }
.site-logo { display: inline-flex; align-items: center; gap: 8px; font: 700 23px/1 var(--f-display); color: var(--accent); text-decoration: none; }
.site-logo svg, .site-menu svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.site-logo small { font: 600 12px var(--f-body); color: var(--fg); margin-left: 6px; letter-spacing: 0.02em; }
.site-links { display: flex; align-items: center; gap: 28px; font: 500 15px var(--f-body); }
.site-links a { color: var(--fg); text-decoration: none; }
.site-links a:hover, .site-links a[aria-current='page'] { color: var(--accent); }
.site-links .site-cta { background: var(--accent); color: var(--accent-fg); padding: 8px 16px; border-radius: 8px; font-size: 14px; }
.site-links .site-cta:hover { color: var(--accent-fg); box-shadow: 0 0 22px var(--accent-glow); }
.site-menu { display: none; background: none; border: 0; padding: 6px; color: var(--fg); cursor: pointer; }
.site-menu svg { width: 28px; height: 28px; }
@media (max-width: 760px) {
  .site-logo small { display: none; }
  .site-menu { display: block; }
  .site-links {
    position: absolute; top: 62px; left: 0; right: 0; display: none; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 16px 16px;
  }
  .site-links.open { display: flex; }
  .site-links a:not(.site-cta) { padding: 12px 4px; border-bottom: 1px solid var(--line); }
  .site-links .site-cta { margin-top: 14px; text-align: center; }
}

/* ------------------------------------------------------------- top bar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px;
  padding: 10px 16px; background: var(--bar); border-bottom: 1px solid var(--line);
}
.tgroup { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.tgroup.file { margin-left: auto; }
.tgroup.push, .hint.push { margin-left: auto; }
.lbl { font-size: 10.5px; font-weight: 600; color: var(--muted); letter-spacing: 0.09em; text-transform: uppercase; }
.num { font: 500 12px var(--f-mono); min-width: 38px; font-variant-numeric: tabular-nums; }

.btn {
  font-weight: 600; font-size: 13px; background: var(--panel-2); border: 1px solid var(--line);
  border-radius: 6px; padding: 6px 11px; cursor: pointer; white-space: nowrap;
}
.btn:hover:not(:disabled) { border-color: var(--line-2); }
.btn:disabled { opacity: 0.45; cursor: default; }
.btn.icon { padding: 5px 9px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.btn.armed { background: var(--danger); border-color: var(--danger); color: #fff; }
.play { width: 46px; height: 34px; display: grid; place-items: center; padding: 0; }
.play svg { width: 15px; height: 15px; fill: currentColor; }
.play[aria-pressed='true'] { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); box-shadow: 0 0 14px var(--accent-glow); }
.seg { display: flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.seg-btn { background: var(--panel-2); border: 0; padding: 7px 11px; font-weight: 600; font-size: 12.5px; cursor: pointer; color: var(--muted); }
.seg-btn + .seg-btn { border-left: 1px solid var(--line); }
.seg-btn[aria-pressed='true'] { background: var(--fg); color: var(--bg); }
.lcd {
  font: 500 15px var(--f-mono); color: var(--accent); background: var(--lcd); border: 1px solid var(--line);
  border-radius: 6px; padding: 6px 10px; min-width: 84px; text-align: center; font-variant-numeric: tabular-nums;
}
.num-input { width: 70px; font: 500 15px var(--f-mono); color: var(--accent); background: var(--lcd); border: 1px solid var(--line); border-radius: 6px; padding: 5px 6px; }
.swing { width: 76px; }
.hmeter { width: 76px; display: grid; gap: 2px; }
.hmeter i { display: block; height: 4px; width: 0; background: var(--meter-h); background-size: 76px 100%; border-radius: 2px; }
.name-input, .text-input {
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; min-width: 0;
}
.name-input { width: 170px; font-weight: 600; }
.text-input { width: 140px; }
.save-state { font-size: 12px; color: var(--muted); white-space: nowrap; }
.save-state[data-state='unsaved'], .save-state[data-state='saving'] { color: var(--warn); }
select { background: var(--panel-2); border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; max-width: 220px; }

/* ----------------------------------------------------------------- tabs */
.tabs { display: flex; align-items: center; gap: 2px; padding: 0 16px; border-bottom: 1px solid var(--line); background: var(--bar); overflow-x: auto; }
.tab {
  font: 700 12.5px var(--f-display); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted);
  background: none; border: 0; border-bottom: 2px solid transparent; padding: 11px 14px; margin-bottom: -1px; cursor: pointer; white-space: nowrap;
}
.tab[aria-selected='true'] { color: var(--fg); border-bottom-color: var(--accent); }
.audio-hint { margin: 0 0 0 auto; font-size: 12px; color: var(--muted); white-space: nowrap; padding-left: 12px; }

.workspace { flex: 1; padding: 14px 16px 32px; min-width: 0; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px; min-width: 0; }
.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; margin-bottom: 12px; }
.scroll { overflow-x: auto; }
.hint { margin: 0; font-size: 12.5px; color: var(--muted); }
.empty { color: var(--muted); padding: 12px 4px; margin: 0; }
.swatch { width: 10px; height: 18px; border-radius: 3px; flex: none; }

/* --------------------------------------------------------- channel rack */
.board { --steps: 16; display: grid; gap: 4px; min-width: calc(330px + var(--steps) * 30px); }
.board .row { display: grid; grid-template-columns: 330px minmax(0, 1fr); gap: 10px; align-items: center; }
.board .row.head { margin-bottom: 2px; }
.chctl { display: flex; align-items: center; gap: 6px; min-width: 0; }
.led {
  width: 22px; height: 22px; flex: none; border-radius: 4px; border: 1px solid var(--line); background: var(--panel-2);
  font: 600 10.5px var(--f-mono); color: var(--muted); cursor: pointer; padding: 0;
}
.chctl .led[aria-pressed='true'] { background: var(--ok); border-color: var(--ok); box-shadow: 0 0 8px rgba(79, 216, 143, 0.45); }
.led.mute[aria-pressed='true'] { background: var(--danger); border-color: var(--danger); color: #fff; }
.led.solo[aria-pressed='true'] { background: var(--warn); border-color: var(--warn); color: var(--bg); }
.chname {
  flex: 1; min-width: 0; text-align: left; font-weight: 500; font-size: 13px; background: var(--panel-2);
  border: 1px solid var(--line); border-radius: 4px; padding: 4px 8px; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.chname:hover { border-color: var(--accent); }
.knob { width: 54px; flex: none; }
.knob.pan { width: 40px; }
.route { width: 74px; padding: 4px; font-size: 12px; flex: none; }
.gear[aria-expanded='true'] { border-color: var(--accent); color: var(--accent); }
.steps { display: grid; grid-template-columns: repeat(var(--steps), minmax(0, 1fr)); gap: 3px; }
.step {
  --now: 0; height: 30px; border: 0; border-radius: 4px; padding: 0; cursor: pointer; background: var(--step-a);
  box-shadow: inset 0 0 0 calc(var(--now) * 2px) var(--fg); transition: background 0.06s;
}
.step[data-g='1'] { background: var(--step-b); }
.step[aria-pressed='true'] { background: var(--accent); box-shadow: 0 0 9px var(--accent-glow), inset 0 0 0 calc(var(--now) * 2px) var(--fg); }
.colhead { --now: 0; font: 500 11px var(--f-mono); color: var(--muted); text-align: left; padding-left: 3px; border-radius: 3px; min-height: 16px; }
.colhead.beat { color: var(--fg); }
.colhead { background: rgba(255, 255, 255, calc(var(--now) * 0.18)); }
.channel.muted .steps { opacity: 0.45; }
.hint-row { margin: 2px 0 2px 340px; font-size: 12px; color: var(--muted); }
.settings {
  display: flex; flex-wrap: wrap; gap: 10px 20px; align-items: center; margin: 4px 0 10px 28px;
  padding: 10px 12px; background: var(--deep); border: 1px solid var(--line); border-radius: 8px;
}
.param { display: flex; align-items: center; gap: 8px; }
.param input[type='range'] { width: 110px; }
.param.end { margin-left: auto; }

/* ------------------------------------------------------------- playlist */
.pl-scroll { border: 1px solid var(--line); border-radius: 8px; }
.pl-grid { --bars: 16; --bar-px: 56px; min-width: calc(110px + var(--bars) * var(--bar-px)); }
.pl-ruler, .pl-lane { display: grid; grid-template-columns: 110px calc(var(--bars) * var(--bar-px)); }
.pl-corner {
  position: sticky; left: 0; z-index: 2; background: var(--panel-2); border-right: 1px solid var(--line);
  padding: 0 10px; display: flex; align-items: center; font-size: 12px; color: var(--muted);
}
.pl-track {
  position: relative; height: 40px; cursor: copy;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px var(--bar-px));
}
.pl-lane { border-top: 1px solid var(--line); }
.pl-lane:nth-child(odd) .pl-track { background-color: var(--deep); }
.pl-ruler .pl-track { height: 26px; cursor: pointer; background-color: var(--panel-2); }
.pl-barnum { position: absolute; top: 5px; padding-left: 5px; font: 500 11px var(--f-mono); color: var(--muted); pointer-events: none; }
.pl-loop { position: absolute; top: 0; bottom: 0; background: rgba(0, 179, 255, 0.14); border-left: 2px solid var(--accent); border-right: 2px solid var(--accent); pointer-events: none; }
.pl-clip {
  --clip: #888; position: absolute; top: 4px; bottom: 4px; margin-left: 1px; border-radius: 4px; border: 0; padding: 0 6px;
  background: color-mix(in srgb, var(--clip) 35%, var(--panel)); border-left: 3px solid var(--clip);
  font-size: 11.5px; font-weight: 600; text-align: left; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; cursor: pointer;
}
.pl-clip:hover { background: color-mix(in srgb, var(--clip) 55%, var(--panel)); }
.pl-playhead { position: absolute; top: 0; left: 0; width: 2px; height: calc(100vh); background: var(--fg); pointer-events: none; z-index: 3; }
.pl-grid { position: relative; overflow: hidden; width: max-content; }
.check { display: flex; align-items: center; gap: 6px; font-size: 13px; cursor: pointer; }
.check input { accent-color: var(--accent); }

/* ----------------------------------------------------------------- mixer */
.strips { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 6px; align-items: stretch; }
.strip {
  flex: 0 0 82px; display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 10px 6px;
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 8px;
}
.strip.master { flex-basis: 96px; border-color: var(--accent-dim); }
.strip.muted { opacity: 0.6; }
.strip-num { font: 600 11px var(--f-mono); color: var(--muted); }
.strip-name { width: 100%; background: var(--deep); border: 1px solid var(--line); border-radius: 4px; padding: 3px 4px; font-size: 11.5px; text-align: center; }
.faderwrap { display: flex; gap: 8px; height: 170px; }
.vmeter { display: flex; gap: 2px; width: 12px; background: var(--lcd); border-radius: 3px; padding: 1px; align-items: flex-end; }
.vmeter i { flex: 1; height: 0; background: var(--meter); background-size: 100% 168px; background-position: bottom; border-radius: 2px; }
.fader { writing-mode: vertical-lr; direction: rtl; width: 26px; height: 170px; }
.pan { width: 64px; }
.ms { display: flex; gap: 4px; }
.feeds { font-size: 11px; color: var(--muted); min-height: 15px; }
.add-track { align-self: flex-start; }

/* ------------------------------------------------------- dialog + toast */
.overlay { position: fixed; inset: 0; z-index: 50; background: rgba(0, 0, 0, 0.6); display: grid; place-items: start center; padding: 10vh 16px 16px; }
.dialog { width: min(560px, 100%); max-height: 80vh; overflow: auto; background: var(--panel); border: 1px solid var(--line-2); border-radius: 12px; padding: 16px; display: grid; gap: 12px; }
.dialog-head { display: flex; align-items: center; justify-content: space-between; }
.dialog h2 { margin: 0; font: 700 18px var(--f-display); letter-spacing: 0.04em; color: var(--accent); }
.lib-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.lib-list { display: grid; gap: 6px; }
.lib-item { display: flex; gap: 8px; align-items: center; }
.lib-open {
  flex: 1; min-width: 0; display: flex; justify-content: space-between; gap: 12px; text-align: left; cursor: pointer;
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 6px; padding: 9px 11px;
}
.lib-open:hover:not(:disabled) { border-color: var(--accent); }
.lib-item.current .lib-open { border-color: var(--accent-dim); cursor: default; }
.lib-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lib-date { font-size: 12px; color: var(--muted); white-space: nowrap; }
.toast {
  position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); z-index: 60; max-width: calc(100% - 32px);
  background: var(--panel-2); border: 1px solid var(--line-2); border-radius: 8px; padding: 9px 14px; font-size: 13px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}
.toast[data-tone='error'] { border-color: var(--danger); }

@media (max-width: 720px) {
  .topbar { gap: 8px 12px; }
  .tgroup.file { margin-left: 0; }
  .name-input { width: 130px; }
  .audio-hint { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .step { transition: none; }
}