/* Direction: wetware. A living organism wired into a night-city machine.
   The picture is the specimen and gets all the colour; the UI is a dark glass instrument grown
   around it. Chartreuse and teal are the "alive" colours, magenta is a rare synthetic signal.
   Organic radii mark things that are on; HUD notches mark containers. Only small elements
   react to the beat (--kick), and never faster than the music. */
:root {
  --bg-0: #050708;
  --bg-1: #0a0f0e;
  --bg-2: #121a18;
  --glass: rgba(8, 12, 11, .86);
  --glass-hi: rgba(20, 31, 28, .9);
  --line: #22332e;
  --line-hi: #36564c;
  --vein: rgba(182, 255, 59, .22);
  --text: #e6f2ec;
  --text-2: #a3bab0;
  --text-3: #7d9389;
  --bio: #b6ff3b;
  --lume: #3ff5d0;
  --synth: #ff2e88;
  --rec: #ff4136;
  --on-bio: #07090b;

  --font-display: "Syne", "Arial Black", sans-serif;
  --font-ui: "Chakra Petch", "Arial Narrow", sans-serif;
  --font-mono: "Martian Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --ease-org: cubic-bezier(.34, 1.3, .64, 1);
  --ease-hud: cubic-bezier(.2, 0, 0, 1);
  --notch: 10px;
  --kick: 0;
  --panel-w: 340px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg-0); color: var(--text); }
body { font: 500 15px/1.4 var(--font-ui); overflow: hidden; -webkit-font-smoothing: antialiased; }
button, select, input { font: inherit; color: inherit; }
svg { display: block; }

#app { display: flex; height: 100vh; height: 100dvh; }

/* ---------- the specimen ---------- */
#stage {
  position: relative; flex: 1; min-width: 0;
  display: grid; place-items: center;
  background: radial-gradient(120% 90% at 50% 40%, #0b1412 0%, var(--bg-0) 70%);
  overflow: hidden; touch-action: pan-y;
}
#view { display: block; background: #000; }

/* recording: a living membrane pulses around the frame */
#stage::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  box-shadow: inset 0 0 0 2px var(--rec), inset 0 0 40px rgba(255, 65, 54, .35);
  opacity: 0; transition: opacity .3s;
}
#app.recording #stage::after { opacity: 1; animation: rec-pulse 2s ease-in-out infinite; }
@keyframes rec-pulse { 50% { opacity: .45; } }

/* ---------- glass ---------- */
.glass, .hud-top .brand, .hud-tools, .dock, #recBadge, #toast, .intro-card, dialog {
  /* solid tinted glass: a live backdrop blur over the WebGL canvas costs too many frames */
  background: var(--glass);
  border: 1px solid var(--line);
}

.hud { position: absolute; z-index: 3; transition: opacity .5s var(--ease-hud), transform .5s var(--ease-hud); }
#app.idle .hud, #app.idle #recBadge { opacity: 0; pointer-events: none; }
#app.idle .dock { transform: translate(-50%, 12px); }
#app.idle #stage { cursor: none; }

.hud-top {
  top: max(12px, env(safe-area-inset-top)); left: max(12px, env(safe-area-inset-left));
  right: max(12px, env(safe-area-inset-right));
  display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; pointer-events: none;
}
.hud-top > * { pointer-events: auto; }
.brand {
  display: flex; align-items: center; gap: 10px; padding: 7px 12px 7px 10px;
  clip-path: polygon(var(--notch) 0, 100% 0, 100% 100%, 0 100%, 0 var(--notch));
}
.wordmark { margin: 0; font: 800 17px/1 var(--font-display); letter-spacing: .02em; text-transform: uppercase; }
.nucleus {
  width: 10px; height: 10px; border-radius: 58% 42% 51% 49% / 46% 55% 45% 54%;
  background: var(--bio);
  box-shadow: 0 0 calc(3px + var(--kick) * 12px) rgba(182, 255, 59, calc(.35 + var(--kick) * .5));
  transform: scale(calc(1 + var(--kick) * .35));
}
.hud-tools { display: flex; gap: 2px; padding: 3px; clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--notch)), calc(100% - var(--notch)) 100%, 0 100%); }

/* capsule meters */
#meters { display: flex; gap: 6px; margin-left: 4px; padding-left: 10px; border-left: 1px solid var(--line); }
#meters span {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  width: 22px; font: 400 8px/1 var(--font-mono); text-transform: uppercase; letter-spacing: 0; color: var(--text-2);
}
#meters i {
  display: block; width: 6px; height: 22px; border-radius: 3px; position: relative; overflow: hidden;
  background: var(--bg-2);
}
#meters i::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; border-radius: 3px;
  height: calc(var(--v, 0) * 100%);
  background: linear-gradient(to top, var(--lume), var(--bio));
}
#meters span[data-band="kick"] i::after { background: var(--synth); }

/* ---------- mode name: the one place the display face and aberration live ---------- */
#modeName {
  position: absolute; z-index: 2; left: max(28px, calc(50% - 446px)); bottom: 150px;
  display: flex; flex-direction: column; gap: 6px; pointer-events: none;
  opacity: 0; transform: translateY(8px); transition: opacity .5s var(--ease-hud), transform .5s var(--ease-hud);
}
#modeName.show { opacity: 1; transform: none; transition-duration: .18s; }
#app.idle #modeName, :fullscreen #modeName { display: none; }
#modeName small { font: 500 11px/1 var(--font-mono); letter-spacing: .08em; color: var(--bio); text-transform: uppercase; text-shadow: 0 1px 6px #000; }
#modeName span {
  font: 800 clamp(40px, 7vw, 92px)/.9 var(--font-display); text-transform: uppercase; letter-spacing: -.01em;
  color: var(--text);
  text-shadow:
    calc(-1px - var(--kick) * 3px) 0 rgba(255, 46, 136, .7),
    calc(1px + var(--kick) * 3px) 0 rgba(63, 245, 208, .7),
    0 2px 24px rgba(0, 0, 0, .6);
}

#recBadge {
  position: absolute; z-index: 4; top: max(64px, calc(env(safe-area-inset-top) + 56px)); left: 50%; translate: -50% 0;
  display: flex; align-items: center; gap: 8px; padding: 5px 12px; border-color: rgba(255, 65, 54, .5); border-radius: 999px;
  font: 500 12px/1.2 var(--font-mono); letter-spacing: .06em; color: #ff7a70;
}
#recBadge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--rec); animation: tally 1s steps(2) infinite; }
#recBadge[hidden] { display: none; }
@keyframes tally { 50% { opacity: .3; } }

/* ---------- dock: transport, modes, record ---------- */
.dock {
  left: 50%; transform: translateX(-50%); bottom: max(14px, env(safe-area-inset-bottom));
  width: min(920px, calc(100% - 28px));
  padding: 8px 10px 10px; border-radius: 22px 22px 22px 6px;
}
.dock::before {
  content: ""; position: absolute; left: 22px; right: 22px; top: -1px; height: 1px; pointer-events: none;
  background: linear-gradient(90deg, transparent, var(--lume) 30%, var(--bio) 60%, transparent);
  opacity: calc(.25 + var(--kick) * .75);
  box-shadow: 0 0 calc(var(--kick) * 10px) rgba(182, 255, 59, .6);
}
.dock-info {
  display: flex; gap: 10px; align-items: baseline; padding: 0 4px 8px;
  font: 400 11px/1.3 var(--font-mono); letter-spacing: .02em; color: var(--text-2);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
#modeIndex { color: var(--bio); flex: none; }
#modeHint { overflow: hidden; text-overflow: ellipsis; }
.dock-row { display: flex; align-items: center; gap: 10px; }
.strip-wrap { flex: 1; min-width: 0; display: flex; align-items: center; gap: 4px; }
.modes {
  position: relative; flex: 1; min-width: 0; display: flex; gap: 6px; overflow-x: auto; scroll-behavior: smooth;
  scrollbar-width: none; padding: 5px 8px; scroll-snap-type: x proximity; scroll-padding-inline: 40px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 32px, #000 calc(100% - 32px), transparent);
  mask-image: linear-gradient(90deg, transparent, #000 32px, #000 calc(100% - 32px), transparent);
}
.modes::-webkit-scrollbar { display: none; }
.modes button {
  flex: none; scroll-snap-align: center; display: flex; align-items: center; gap: 6px;
  min-height: 36px; padding: 6px 13px; border-radius: 999px; font-size: 14px;
  background: var(--bg-2); border: 1px solid var(--line); color: var(--text-2); clip-path: none;
}
.modes button b { font: 400 10px/1 var(--font-mono); color: var(--text-3); }
.modes button:hover { color: var(--text); border-color: var(--line-hi); }
.modes button[aria-pressed="true"] {
  background: var(--bio); border-color: var(--bio); color: var(--on-bio); font-weight: 600;
  border-radius: 58% 42% 51% 49% / 46% 55% 45% 54%;
  animation: morph 7s ease-in-out infinite;
  box-shadow: 0 0 calc(6px + var(--kick) * 14px) rgba(182, 255, 59, calc(.25 + var(--kick) * .35));
}
.modes button[aria-pressed="true"]:hover { color: var(--on-bio); }
.modes button[aria-pressed="true"] b { color: var(--on-bio); }
/* the active cell keeps slowly changing shape, like something alive */
@keyframes morph {
  33% { border-radius: 44% 56% 47% 53% / 55% 45% 55% 45%; }
  66% { border-radius: 52% 48% 39% 61% / 49% 58% 42% 51%; }
}
.dock .step { flex: none; width: 32px; height: 32px; border-radius: 50%; border: 1px solid var(--line); font-size: 18px; }
.dock .step:hover { border-color: var(--line-hi); background: var(--bg-2); }

.transport {
  flex: none; width: 48px; height: 48px; padding: 0; border-radius: 50%;
  display: grid; place-items: center; background: var(--bg-2); border: 1px solid var(--line-hi); clip-path: none;
  box-shadow: 0 0 0 calc(var(--kick) * 5px) rgba(63, 245, 208, .18);
}
.transport.playing { border-color: var(--lume); }
.transport .ico { margin: 0; }

button.rec {
  flex: none; display: flex; align-items: center; gap: 8px;
  min-height: 48px; min-width: 120px; justify-content: center; padding: 0 18px 0 14px; border-radius: 999px; clip-path: none;
  background: var(--bg-2); border: 1px solid rgba(255, 65, 54, .55); font-weight: 600;
}
button.rec:hover { border-color: var(--rec); color: var(--text); }
button.rec.on { background: #c8261c; border-color: #c8261c; color: #fff; }
.ico.rec { width: 14px; height: 14px; border-radius: 50%; background: var(--rec); box-shadow: 0 0 8px rgba(255, 65, 54, .6); transition: border-radius .3s var(--ease-org); }
button.rec.on .ico { background: #fff; box-shadow: none; }
.ico.stop { border-radius: 3px; }

.sheet-btn { display: none; }

/* ---------- controls ---------- */
button, select {
  background: var(--bg-2); border: 1px solid var(--line); color: var(--text);
  padding: 7px 12px; min-height: 38px; cursor: pointer; border-radius: 4px;
  transition: border-color .12s, color .12s, background .12s, transform .12s;
}
button:hover, select:hover { border-color: var(--line-hi); color: var(--bio); }
button:active { transform: translateY(1px); background: var(--bg-1); }
button:disabled { opacity: .38; cursor: not-allowed; color: var(--text); border-color: var(--line); transform: none; }
button.primary { background: var(--bio); border-color: var(--bio); color: var(--on-bio); font-weight: 600; }
button.primary:hover { background: #c8ff6a; color: var(--on-bio); }
button.primary:focus-visible { outline-color: var(--text); outline-offset: 3px; box-shadow: none; }
button.mutate { border-color: var(--lume); color: var(--lume); border-radius: 14px 6px 14px 6px; }
button.mutate:hover { background: rgba(63, 245, 208, .1); color: var(--lume); }
button.mutate span { display: inline-block; transition: rotate .4s var(--ease-org); }
button.mutate:hover span { rotate: 180deg; }
/* an engaged toggle is filled, not just glowing */
button[aria-pressed="true"] {
  position: relative; background: rgba(63, 245, 208, .1); border-color: var(--lume); color: var(--lume); font-weight: 600;
  border-radius: 14px 6px 14px 6px;
}
button[aria-pressed="true"]:hover { color: var(--lume); }
button.rec.on:hover { color: #fff; }
.palettes button[aria-pressed="true"]:hover { color: var(--text); }
button.icon {
  width: 38px; height: 38px; min-height: 0; padding: 0; display: grid; place-items: center;
  background: transparent; border-color: transparent; font-size: 18px; line-height: 1; font-weight: 600;
}
button.icon:hover { background: var(--bg-2); border-color: var(--line); }
button.icon svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
button.mini { min-height: 30px; padding: 3px 10px; font-size: 13px; }
select { appearance: none; -webkit-appearance: none; padding-right: 28px;
  background: var(--bg-2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%23a3bab0' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 10px center / 12px; }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--lume); outline-offset: 2px; }
button:focus-visible, select:focus-visible { box-shadow: 0 0 0 4px var(--bg-0); }

/* transport glyphs */
.ico { display: inline-block; width: 12px; height: 13px; flex: none; }
.ico.play { background: currentColor; clip-path: polygon(10% 0, 100% 50%, 10% 100%); margin-left: 3px; }
.ico.pause { width: 11px; border-left: 4px solid currentColor; border-right: 4px solid currentColor; }

/* ---------- panel: the instrument's membrane ---------- */
#panel {
  width: var(--panel-w); flex: none; position: relative; z-index: 5;
  background:
    radial-gradient(60px 46px at 82% 14%, rgba(63, 245, 208, .05), transparent 70%),
    radial-gradient(90px 70px at 12% 46%, rgba(182, 255, 59, .035), transparent 70%),
    radial-gradient(70px 90px at 88% 78%, rgba(63, 245, 208, .04), transparent 70%),
    linear-gradient(180deg, var(--bg-1), var(--bg-0));
  background-attachment: local;
  border-left: 1px solid var(--line);
  overflow-y: auto; overscroll-behavior: contain; padding: 0 18px 28px; scroll-padding-top: 64px;
  scrollbar-width: thin; scrollbar-color: var(--line-hi) transparent;
}
#panel::before { /* a vein running down the membrane edge */
  content: ""; position: fixed; top: 0; bottom: 0; width: 1px; margin-left: -19px;
  background: linear-gradient(180deg, transparent, var(--vein) 20%, rgba(63, 245, 208, .18) 60%, transparent);
  pointer-events: none;
}
#app.panel-hidden #panel { display: none; }
#panel header {
  position: sticky; top: 0; z-index: 2; display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0 12px; background: var(--bg-1);
  box-shadow: 0 12px 14px -10px var(--bg-1); border-bottom: 1px solid var(--line);
}
#panel:focus, #panel:focus-visible { outline: none; }
.grabber { display: none; }
.panel-title { margin: 0; font: 800 22px/1 var(--font-display); text-transform: uppercase; letter-spacing: .01em; }

.group { padding: 16px 0 14px; position: relative; }
.group + .group::before, .group + .fold::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, var(--vein), rgba(63, 245, 208, .12) 50%, transparent);
}
.group h3, .fold summary h3 {
  display: flex; align-items: center; gap: 8px; margin: 0 0 10px;
  font: 600 11px/1.2 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--text-2);
}
.group h3::before {
  content: ""; width: 6px; height: 6px; border-radius: 58% 42% 51% 49% / 46% 55% 45% 54%; background: var(--bio);
  box-shadow: 0 0 6px rgba(182, 255, 59, .5);
}
.group-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.group-head h3 { margin: 0; }
.head-actions { display: flex; gap: 6px; }

.fold summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; border-radius: 4px; }
.fold summary::-webkit-details-marker { display: none; }
.fold summary h3 { margin: 0; }
.fold summary::after { content: "+"; font: 400 18px/1 var(--font-mono); color: var(--text-2); transition: rotate .2s var(--ease-hud); }
.fold[open] summary::after { rotate: 45deg; }
.fold[open] summary { margin-bottom: 10px; }
.fold:hover summary h3 { color: var(--text); }
.sub { margin: 14px 0 4px; font: 500 10px/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--text-3); }

.row { display: flex; gap: 6px; margin-bottom: 6px; align-items: center; }
.row > * { flex: 1; }
.seg button { padding-left: 6px; padding-right: 6px; }

.status { margin-top: 6px; font: 400 11px/1.4 var(--font-mono); color: var(--text-2); min-height: 1.4em; }
.fine { font-size: 13px; color: var(--text-2); margin: 10px 0 0; }

/* presets as pads */
.presets { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.presets button { display: flex; align-items: center; gap: 8px; text-align: left; font-size: 14px; padding: 6px 10px; min-height: 38px; clip-path: polygon(0 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%); }
.presets button b { font: 400 10px/1 var(--font-mono); color: var(--text-3); }
.presets button[aria-pressed="true"] { clip-path: none; }
.presets button[aria-pressed="true"] b { color: var(--lume); }

/* palettes: membranes of colour */
.palettes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.palettes button {
  display: flex; flex-direction: column; gap: 6px; padding: 6px 7px 7px; font-size: 13px; color: var(--text-2);
  border-radius: 12px 4px 12px 4px; text-align: left;
}
.palettes button[aria-pressed="true"] {
  background: var(--bg-2); color: var(--text); border-color: var(--lume);
  box-shadow: 0 0 0 1px var(--lume), 0 0 12px rgba(63, 245, 208, .25);
}
.palettes button[aria-pressed="true"]::after { content: "✓"; position: absolute; }
.palettes button { position: relative; }
.palettes button[aria-pressed="true"]::after { bottom: 6px; right: 8px; font-size: 11px; color: var(--lume); }
.palettes .sw { display: flex; height: 12px; border-radius: 6px 2px 6px 2px; overflow: hidden; }
.palettes .sw i { flex: 1; }

/* sliders: tendrils filled with light */
.param { display: grid; grid-template-columns: 96px 1fr 70px; align-items: center; gap: 10px; margin: 2px 0; min-height: 34px; }
.param label { font-size: 14px; color: var(--text); }
.param output { text-align: right; font: 400 11px/1 var(--font-mono); color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.param select { width: 100%; grid-column: 2 / 4; }
input[type=range] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 28px; margin: 0;
  background: transparent; cursor: pointer; --p: 50%;
}
input[type=range]::-webkit-slider-runnable-track {
  height: 4px; border-radius: 2px;
  background: linear-gradient(90deg, var(--lume), var(--bio)) 0 0 / var(--p) 100% no-repeat, var(--bg-2);
  box-shadow: inset 0 0 0 1px var(--line);
}
input[type=range]::-moz-range-track { height: 4px; border-radius: 2px; background: var(--bg-2); }
input[type=range]::-moz-range-progress { height: 4px; border-radius: 2px; background: linear-gradient(90deg, var(--lume), var(--bio)); }
input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 16px; height: 16px; margin-top: -6px; border-radius: 50%;
  background: var(--text); border: 3px solid var(--bg-0); box-shadow: 0 0 0 1px var(--line-hi);
  transition: transform .12s, box-shadow .12s;
}
input[type=range]::-moz-range-thumb {
  width: 16px; height: 16px; border-radius: 50%; background: var(--text); border: 3px solid var(--bg-0);
}
input[type=range]:hover::-webkit-slider-thumb, input[type=range]:active::-webkit-slider-thumb {
  transform: scale(1.2); box-shadow: 0 0 0 1px var(--bio), 0 0 10px rgba(182, 255, 59, .6);
}
input[type=range]:focus-visible { outline-offset: 0; }

.switch { display: flex; align-items: center; gap: 10px; margin: 10px 0 12px; cursor: pointer; font-size: 14px; }
.switch input {
  appearance: none; -webkit-appearance: none; width: 38px; height: 22px; margin: 0; flex: none; border-radius: 11px;
  background: var(--bg-2); border: 1px solid var(--line-hi); position: relative; cursor: pointer; transition: background .15s;
}
.switch input::after {
  content: ""; position: absolute; top: 3px; left: 3px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--text-2); transition: translate .2s var(--ease-org), background .15s;
}
.switch input:checked { background: var(--bio); border-color: var(--bio); }
.switch input:checked::after { translate: 16px 0; background: var(--on-bio); }

/* ---------- intro ---------- */
#intro {
  position: absolute; inset: 0; z-index: 6; display: grid; place-items: center; padding: 16px;
  background: radial-gradient(70% 60% at 50% 50%, rgba(5, 7, 8, .35), rgba(5, 7, 8, .8));
  overflow-y: auto;
}
#intro[hidden] { display: none; }
#app:has(#intro:not([hidden])) .hud { opacity: 0; }
.intro-card:focus { outline: none; }
.intro-card {
  position: relative; max-width: 460px; margin: auto; padding: 30px 30px 24px;
  background: var(--glass-hi);
  clip-path: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px);
}
.veins { position: absolute; top: 0; right: 0; width: 62%; pointer-events: none; }
.veins path { fill: none; stroke: var(--vein); stroke-width: 1.2; stroke-dasharray: 420; stroke-dashoffset: 420; animation: grow 2.4s var(--ease-hud) .2s forwards; }
@keyframes grow { to { stroke-dashoffset: 0; } }
.kicker { margin: 0 0 12px; font: 500 11px/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--bio); }
.intro-card h2 { margin: 0 0 14px; font: 800 40px/1 var(--font-display); letter-spacing: -.01em; }
.intro-card p { margin: 0 0 20px; font-size: 16px; color: var(--text); }
.intro-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.intro-actions button { flex: 1 1 160px; min-height: 48px; font-size: 16px; }
.intro-card .fine { margin: 16px 0 0; font-size: 13px; color: var(--text-2); }
.intro-card em { font-style: normal; color: var(--text); }

#drop {
  position: absolute; inset: 0; z-index: 7; display: grid; place-items: center; pointer-events: none;
  background: rgba(5, 7, 8, .72);
}
#drop svg { position: absolute; width: min(60vmin, 420px); }
#drop path { fill: rgba(182, 255, 59, .04); stroke: var(--bio); stroke-width: 1; stroke-dasharray: 6 6; animation: crawl 6s linear infinite; }
@keyframes crawl { to { stroke-dashoffset: -120; } }
#drop div { position: relative; font: 500 13px/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--bio); }
#drop[hidden] { display: none; }

/* ---------- dialogs & toast ---------- */
dialog {
  color: var(--text); padding: 24px; max-width: min(420px, calc(100vw - 32px)); border-radius: 18px 4px 18px 4px;
  background: var(--glass-hi);
}
dialog::backdrop { background: rgba(5, 7, 8, .7); }
dialog h2 { margin: 0 0 16px; font: 800 24px/1 var(--font-display); text-transform: uppercase; }
dialog dl { display: grid; grid-template-columns: auto 1fr; gap: 8px 16px; margin: 0 0 8px; align-items: center; }
dialog dt { white-space: nowrap; }
dialog dd { margin: 0; color: var(--text-2); font-size: 14px; }
kbd {
  display: inline-block; min-width: 22px; padding: 2px 6px; border-radius: 4px; text-align: center;
  font: 500 11px/1.4 var(--font-mono); background: var(--bg-2); border: 1px solid var(--line-hi); color: var(--text);
}
dialog form { margin-top: 16px; }
dialog form button { width: 100%; }
#clip video { display: block; max-width: 100%; max-height: 52vh; margin: 0 auto 14px; background: transparent; border-radius: 12px 4px 12px 4px; }
#clip .row { margin: 0; }

#toast {
  position: fixed; left: 50%; top: max(70px, calc(env(safe-area-inset-top) + 62px)); z-index: 10;
  display: flex; align-items: center; gap: 10px; max-width: calc(100vw - 32px);
  padding: 9px 14px; border-radius: 999px; font: 400 12px/1.4 var(--font-mono); color: var(--text);
  transform: translate(-50%, -8px); opacity: 0; pointer-events: none; transition: opacity .22s var(--ease-hud), transform .22s var(--ease-hud);
}
#toast::before { content: ""; flex: none; width: 6px; height: 6px; border-radius: 50%; background: var(--bio); box-shadow: 0 0 6px var(--bio); }
#toast.error::before { background: var(--rec); box-shadow: 0 0 6px var(--rec); }
#toast.show { opacity: 1; transform: translate(-50%, 0); pointer-events: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.phone-only { display: none; }
#app.idle .hud:focus-within { opacity: 1; pointer-events: auto; }
#toast button { min-height: 26px; padding: 2px 10px; font: 600 12px/1 var(--font-ui); border-radius: 999px; }

/* ---------- phones: full-screen specimen, controls in a bottom sheet ---------- */
@media (max-width: 760px) {
  #app { display: block; }
  #stage { position: fixed; inset: 0; }
  #panel {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 8; width: auto; max-height: 74dvh;
    border-left: 0; border-top: 1px solid var(--line-hi); border-radius: 22px 22px 0 0;
    padding: 0 max(16px, env(safe-area-inset-right)) calc(24px + env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
    box-shadow: 0 -20px 60px rgba(0, 0, 0, .6);
    transition: transform .32s var(--ease-hud), visibility 0s;
  }
  #panel::before { display: none; }
  #app.panel-hidden #panel { display: block; transform: translateY(105%); visibility: hidden; transition: transform .32s var(--ease-hud), visibility 0s .32s; }
  #panel header { padding-top: 22px; }
  .panel-title { font-size: 18px; }
  .phone-only { display: block; }
  .kicker { letter-spacing: .06em; }
  .grabber { display: block; position: absolute; top: 8px; left: 50%; translate: -50% 0; width: 40px; height: 4px; border-radius: 2px; background: var(--line-hi); }
  #panelToggle { display: none; }

  .dock { width: calc(100% - 20px); bottom: max(10px, env(safe-area-inset-bottom)); padding: 8px 8px 10px; border-radius: 22px; }
  .dock-row { flex-wrap: wrap; gap: 8px; justify-content: space-between; }
  .strip-wrap { order: -1; flex: 1 0 100%; }
  .strip-wrap .step { display: none; }
  .hud-tools [data-action=help], .hud-tools [data-action=fullscreen] { display: none; }
  .transport { width: 52px; height: 52px; }
  button.rec { flex: 1; justify-content: center; min-height: 52px; font-size: 16px; }
  .sheet-btn {
    display: flex; flex: none; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
    width: 64px; min-height: 52px; padding: 4px; border-radius: 16px; font-size: 12px;
  }
  .sheet-btn svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; }
  .dock-info { padding-bottom: 6px; }

  #modeName { left: 20px; bottom: 196px; }
  #meters span { width: auto; font-size: 0; gap: 0; }
  #meters i { height: 18px; }
  .wordmark { font-size: 15px; }
  #intro { align-items: end; padding: 12px 12px max(12px, env(safe-area-inset-bottom)); z-index: 9; }
  .intro-card { padding: 24px 20px 18px; margin: 0; }
  .intro-card h2 { font-size: 34px; }
  .veins { width: 70%; }
}

@media (max-width: 380px) {
  .intro-card h2 { font-size: 30px; }
  .param { grid-template-columns: 84px 1fr 50px; gap: 8px; }
  #meters { display: none; }
}

/* landscape phones */
@media (max-height: 500px) and (min-width: 761px) {
  :root { --panel-w: 300px; }
  .dock-info { display: none; }
  #modeName { bottom: 96px; }
  #modeName span { font-size: 40px; }
  .intro-card { padding: 18px 22px 16px; }
  .intro-card h2 { font-size: 28px; margin-bottom: 8px; }
  .intro-card p { margin-bottom: 12px; font-size: 15px; }
  .kicker { display: none; }
}

/* touch screens: bigger targets, no double-tap zoom, no iOS focus zoom */
@media (pointer: coarse) {
  button, select { min-height: 44px; touch-action: manipulation; }
  .brand { min-height: 52px; }
  button.icon { width: 44px; height: 44px; }
  button.mini { min-height: 36px; }
  select { font-size: 16px; }
  input[type=range] { height: 40px; touch-action: pan-y; }
  .modes button { min-height: 40px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .veins path { stroke-dashoffset: 0; }
}