/*
  Tokens and the primitives every other sheet builds on.

  The palette is a cinema at night: a warm near-black ground, one amber light,
  and the cat in coral. Each colour means one thing and only that —
  amber = action, coral = the cat, green = all is well, sky = keyboard focus.
*/

:root {
  --ground: #17130F;
  --ground-deep: #0C0A08;
  --panel: #221C17;
  --panel-raised: #1C1712;

  --ink: #F5EDE2;
  --ink-soft: #C0B1A0;
  --ink-muted: #9C8C7C;
  --ink-faint: #8A7A6A;
  --ink-faintest: #7E6F60;
  --ink-warm: #A2907E;

  --amber: #F2A93B;
  --coral: #F58C7B;
  --green: #6FD08C;
  --sky: #7FD3F0;
  --cream: #F6E2C0;

  /* The adult's pause is paper, not cinema — the one light surface here. */
  --paper: #F3E7D3;
  --paper-ink: #2B211B;
  --paper-ink-soft: #6B5A4A;
  --paper-ink-faint: #8A7663;

  --line: rgba(245, 237, 226, .13);
  --line-strong: rgba(245, 237, 226, .28);
  --fill: rgba(245, 237, 226, .10);
  --fill-track: rgba(245, 237, 226, .16);
  --glass: rgba(23, 19, 15, .68);

  --display: Fredoka, system-ui, sans-serif;
  --text: "Instrument Sans", system-ui, sans-serif;
  --mono: ui-monospace, Menlo, monospace;

  --radius-panel: 18px;
  --radius-control: 14px;
  --radius-pill: 999px;

  /* Chrome the adult needs but the child should not be drawn to. */
  --chrome-rest: .45;

  /*
    Bands kept clear of the picture while watching in a window, so the top bar
    and the playback bar sit beside the film rather than on it. Full screen
    gives them back — there is no chrome there to make room for.
  */
  --band-top: 74px;
  --band-bottom: 96px;

  /*
    The breakpoint. One number and two states: `js/layout.js` puts `is-mobile`
    or `is-desktop` on <body>, exactly one of them at a time, and every rule in
    these sheets keys off those — so this width is never written twice.

    The class is not decoration: a media query cannot read a custom property —
    there is no `@media (max-width: var(--bp-mobile))` — so naming the state is
    the only way it stays a single copy.
  */
  --bp-mobile: 1024px;
}

* { box-sizing: border-box; }

/*
  A class that sets `display` outranks the `hidden` attribute, and most things
  hidden here are hidden by JS setting `.hidden = true`. Settle it once, here,
  rather than per component.
*/
[hidden] { display: none !important; }

html, body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--text);
  font-size: 15px;
  line-height: 1.5;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

p { margin: 0; }

/* One focus style for every control in the app. */
:focus-visible {
  outline: 3px solid var(--sky);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Buttons ---------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 48px;
  padding: 0 24px;
  border: 0;
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--ink);
  font: 500 14.5px var(--text);
  cursor: pointer;
  transition: background-color .18s, border-color .18s, color .18s, transform .12s;
}

.button:active { transform: translateY(1px); }

.button--primary {
  background: var(--amber);
  color: var(--ground);
  font-weight: 600;
  font-size: 15px;
  box-shadow: 0 6px 20px rgba(242, 169, 59, .28);
}
.button--primary:hover { background: #F7BC5C; }

.button--outline {
  border: 1.5px solid var(--line-strong);
}
.button--outline:hover {
  border-color: var(--ink-soft);
  background: rgba(245, 237, 226, .06);
}

.button--dark {
  background: var(--paper-ink);
  color: var(--cream);
  font-weight: 600;
  font-size: 15px;
  height: 52px;
  padding: 0 26px;
}
.button--dark:hover { background: #3B2E25; }

.button--link {
  height: auto;
  padding: 4px 2px;
  color: var(--amber);
  font-weight: 500;
  font-size: 14px;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.button--link:hover { color: var(--cream); }

/* The adult's chrome over the film: quiet at rest, present when reached for. */
.button--quiet {
  height: 34px;
  padding: 0 14px;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--glass);
  color: var(--ink-soft);
  font: 500 12.5px var(--text);
  backdrop-filter: blur(10px);
}
.button--quiet:hover { color: var(--ink); border-color: var(--line-strong); }

.button--small {
  height: 38px;
  padding: 0 16px;
  font-size: 13px;
  border-radius: 11px;
}

.button:disabled {
  background: var(--fill);
  color: var(--ink-faintest);
  cursor: default;
}

.button__icon {
  width: 16px;
  height: 16px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.button__icon--solid {
  width: 13px;
  height: 15px;
  fill: currentColor;
  stroke-width: 2.4;
}
.button__knob { fill: var(--ground); stroke: none; }
.button__plus { font-size: 15px; line-height: 1; }

/* ---------- Text field ---------- */

/*
  No `flex` here. The quick-change bar lays these out in a row and wants one to
  grow; the welcome form is a column, where a flex-basis of 0 would collapse the
  field to nothing. The row asks for the growth itself.
*/
.field {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: none;
  min-width: 0;
  height: 54px;
  padding: 0 18px;
  border: 1px solid rgba(245, 237, 226, .14);
  border-radius: var(--radius-control);
  background: var(--panel);
}
.field:focus-within {
  border-color: rgba(242, 169, 59, .55);
  outline: 3px solid var(--sky);
  outline-offset: 3px;
}

.field__icon {
  width: 17px;
  height: 17px;
  flex: none;
  fill: none;
  stroke: var(--ink-faint);
  stroke-width: 2;
  stroke-linecap: round;
}

.field__input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: none;
  color: var(--ink);
  font: 400 14.5px var(--text);
}
.field__input::placeholder { color: var(--ink-faintest); }
.field__input:focus { outline: none; }

/* ---------- Indicator lamp ---------- */

.led {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--ink-faintest);
  transition: background-color .25s, box-shadow .25s;
}
.led.is-ok {
  background: var(--green);
  box-shadow: 0 0 9px rgba(111, 208, 140, .9);
}
.led.is-alert {
  background: var(--amber);
  box-shadow: 0 0 9px rgba(242, 169, 59, .9);
  animation: pc-pulse 1s ease-in-out infinite;
}

/* The full-screen lamp is twice the size, so its halo is too. */
.minimal__led.is-ok { box-shadow: 0 0 22px rgba(111, 208, 140, .95); }
.minimal__led.is-alert { box-shadow: 0 0 22px rgba(242, 169, 59, .95); }

/* ---------- Range inputs ---------- */

/*
  No width here on purpose. `input[type="range"]` carries attribute-level
  specificity, so a width set here would outrank the layout classes that place
  these sliders — each context sets its own instead.
*/
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  height: 22px;
  background: none;
  cursor: pointer;
}
/* `--range-fill` is set per input by js/range-fill.js. */
input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: var(--radius-pill);
  background: linear-gradient(to right,
    var(--range-tint, var(--amber)) 0 var(--range-fill, 0%),
    var(--fill-track) var(--range-fill, 0%));
}
input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: var(--radius-pill);
  background: linear-gradient(to right,
    var(--range-tint, var(--amber)) 0 var(--range-fill, 0%),
    var(--fill-track) var(--range-fill, 0%));
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  margin-top: -8px;
  border: 3px solid var(--panel-raised);
  border-radius: 50%;
  background: var(--cream);
}
input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border: 3px solid var(--panel-raised);
  border-radius: 50%;
  background: var(--cream);
}

/* ---------- Animations ---------- */

@keyframes pc-pulse {
  0%, 100% { opacity: .55; transform: scale(1); }
  50%      { opacity: 1;   transform: scale(1.12); }
}

@keyframes pc-sparkle {
  0%, 100% { opacity: .35; transform: scale(.86) rotate(0deg); }
  50%      { opacity: 1;   transform: scale(1.14) rotate(12deg); }
}

@keyframes pc-rise {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/*
  Everything decorative stops. The veils, the badges and the gauge keep working
  — they carry meaning, and a child who needs them is not helped by stillness.
*/
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

.boot-error {
  margin: 0;
  padding: 16px 20px;
  background: var(--coral);
  color: var(--ground);
  font: 500 14px var(--text);
}