/* A remote lives in the dark next to a TV, so the panel is dark too --
   and every control is sized for a thumb, not a cursor. */

:root {
  color-scheme: dark;
  --bg: #0a0d14;
  --card: #151a25;
  --edge: #232b3b;
  --raised: #1e2634;
  --ink: #eef2f9;
  --muted: #8d98ad;
  --accent: #5b8def;
  --live: #3ddc97;
  --warn: #ff7a6b;
  --radius: 22px;
}

* { box-sizing: border-box; }

/* Must beat every display rule below it. `hidden` is a plain UA style, so
   any author rule -- .sheet-wrap's display:flex, say -- silently wins, and
   an overlay that never hides sits over the whole panel eating taps. */
[hidden] { display: none !important; }

html { background: var(--bg); }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  user-select: none;
  overscroll-behavior-y: contain;
}

button {
  font: inherit;
  color: inherit;
  border: 0;
  background: none;
  cursor: pointer;
  touch-action: manipulation;
}

/* Every icon is a Font Awesome glyph: a solid shape, filled, never stroked. */
svg { width: 22px; height: 22px; fill: currentColor; }

.app {
  max-width: 520px;
  margin: 0 auto;
  padding: max(12px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right))
           max(24px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* --- header ---------------------------------------------------------- */
.top { display: flex; align-items: center; justify-content: space-between; padding: 6px 4px 0; }
.top h1 { margin: 0; line-height: 0; }
.top .logo { height: 34px; width: auto; display: block; }

.icon-button {
  width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center;
  color: var(--muted); background: var(--card);
}
.icon-button:active { background: var(--raised); color: var(--ink); }
.icon-button.spin svg { animation: spin .7s linear; }
@keyframes spin { to { transform: rotate(360deg); } }

/* --- cards ----------------------------------------------------------- */
.card {
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.card.offline { opacity: .5; }
/* A tint, not a repaint -- it should read at a glance without competing
   with the song title right above it. */
.card.room.playing {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--live) 25%, var(--card)) 0%,
    var(--card) 70%);
}

.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.card-head h2 {
  margin: 0; min-width: 0;
  font-size: 17px; font-weight: 600;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.pill {
  font-size: 11px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--muted); background: var(--raised);
  padding: 4px 9px; border-radius: 999px;
}
.pill.on { color: var(--live); }

/* --- now playing, between the room's name and its volume --------------- */
.now-playing {
  display: flex; align-items: center; gap: 16px; min-width: 0;
}
.cover {
  flex: 0 0 auto;
  width: 62px; height: 62px;
  border-radius: 13px;
  object-fit: cover;
  background: var(--raised);
}
.track { display: flex; flex-direction: column; min-width: 0; }
.track span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.song { font-size: 20px; font-weight: 550; }
.artist { font-size: 17px; color: var(--muted); }

/* Doubles as the line between the song and the volume -- it goes with the
   block, when nothing is playing. Muted throughout, so it never competes
   with the volume meter below it; the cursor only shows once a position is
   actually known (an AVR input or a stream with no duration never gets one). */
.progress { position: relative; height: 3px; border-radius: 999px; background: #0c111b; }
.progress-fill {
  display: block; height: 100%; width: calc(var(--progress, 0) * 1%);
  border-radius: 999px; background: var(--muted);
  transition: width .12s ease-out;
}
.progress-cursor {
  display: none;
  position: absolute; top: 50%;
  left: calc(var(--progress, 0) * 1%);
  width: 7px; height: 7px; margin-left: -3.5px;
  border-radius: 50%; background: var(--muted);
  transform: translateY(-50%);
  transition: left .12s ease-out;
}
.progress.known .progress-cursor { display: block; }

/* --- volume ---------------------------------------------------------- */
.volume { display: flex; align-items: center; gap: 14px; }

.step {
  flex: 0 0 auto;
  width: 78px; height: 62px;
  border-radius: 18px;
  background: var(--raised);
  display: grid; place-items: center;
}
.step svg { width: 20px; height: 20px; }
.step:active { background: var(--accent); transform: scale(.96); }
.step:disabled { opacity: .4; }

.meter { position: relative; flex: 1; height: 8px; border-radius: 999px; background: #0c111b; }
.meter i {
  display: block; height: 100%; width: calc(var(--level, 0) * 1%);
  border-radius: 999px; background: var(--accent);
  transition: width .12s ease-out;
}

/* The level rides the bar. It travels the track less its own width, so it
   never hangs off either end over the buttons -- and the fill's end is
   always somewhere underneath it. */
.knob {
  position: absolute; top: 50%;
  left: calc((100% - 46px) * var(--level, 0) / 100);
  width: 46px; height: 30px;
  transform: translateY(-50%);
  display: grid; place-items: center;
  border-radius: 999px;
  background: var(--accent); color: #fff;
  box-shadow: 0 0 0 3px var(--card);
  font-size: 14px; font-weight: 640; font-variant-numeric: tabular-nums;
  transition: left .12s ease-out;
  cursor: grab;
  touch-action: none;   /* the drag is ours, not a page scroll */
}
/* A thumb-sized grip around a knob only 30px tall. A press on the
   pseudo-element lands on the knob itself. */
.knob::before { content: ''; position: absolute; inset: -12px -8px; }

/* Under a finger the knob has to keep up, not ease after it. */
.meter.dragging i,
.meter.dragging .knob { transition: none; }
.meter.dragging .knob { cursor: grabbing; transform: translateY(-50%) scale(1.12); }

/* --- previous / play-pause / next, centred ----------------------------- */
.actions { display: flex; align-items: stretch; justify-content: center; gap: 10px; }

.transport {
  flex: 0 0 auto;
  width: 66px; height: 62px;
  border-radius: 16px;
  background: var(--raised);
  display: grid; place-items: center;
}
.transport:active { background: var(--accent); transform: scale(.97); }
.transport:disabled { opacity: .5; }
.transport svg { width: 19px; height: 19px; }

/* Which icon shows is a class on the button, not `hidden` on the svg:
   `hidden` is an HTMLElement property and SVGElement does not inherit it,
   so svg.hidden = true sets a JS expando and styles nothing. */
.transport .icon-pause { display: none; }
.transport.playing .icon-play { display: none; }
.transport.playing .icon-pause { display: block; }

/* --- join / leave the AVR, beside the room's name ---------------------- */
.toggle {
  flex: 0 0 auto;
  height: 40px; padding: 0 14px; border-radius: 999px;
  background: var(--raised);
  display: flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 14px; font-weight: 550; white-space: nowrap;
  color: var(--muted);
}
.toggle .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; opacity: .6; }
.toggle[aria-pressed="true"] { background: var(--accent); color: #fff; }
.toggle[aria-pressed="true"] .dot { background: #fff; opacity: 1; }
.toggle:active { transform: scale(.985); }
.toggle:disabled { opacity: .5; }
.toggle.busy { opacity: .6; }

/* --- Spotify: one resume button per account ----------------------------- */
.spotify-row { display: flex; gap: 10px; }
.spotify {
  flex: 1; min-width: 0;
  height: 50px; border-radius: 16px;
  background: var(--raised);
  display: flex; align-items: center; justify-content: center; gap: 9px;
  font-size: 15px; font-weight: 550;
}
.spotify svg { flex: 0 0 auto; color: #fff; }
.spotify span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.spotify:active { transform: scale(.985); }
.spotify:disabled { opacity: .5; }
/* The account playing on this room right now. */
.spotify[aria-pressed="true"] { border: 2px solid var(--ink); }

/* --- source card ------------------------------------------------------ */
.source-button {
  display: flex; align-items: center; gap: 12px;
  width: 100%; min-height: 64px;
  padding: 10px 14px;
  border-radius: 16px;
  background: var(--raised);
  text-align: left;
}
.source-button:active { transform: scale(.985); }
.source-button .eyebrow { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.source-button .value { flex: 1; font-size: 19px; font-weight: 600; }
.source-button .chevron { color: var(--muted); }

/* --- rooms merged into the host's card --------------------------------- */
.joined { display: flex; flex-direction: column; gap: 12px; }
.joined-title { margin: 0 2px; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.joined-rooms { display: flex; flex-direction: column; gap: 14px; }

/* The card stops being a card in here: one border around the group, not
   one around every room in it. */
.joined .card.room { background: none; border: 0; border-radius: 0; padding: 0; gap: 12px; }
.joined .card.room + .card.room { border-top: 1px solid var(--edge); padding-top: 14px; }
/* Flush against the group's own card, so no radius here -- .playing has
   to out-specificity the plain "background: none" above to show at all. */
.joined .card.room.playing {
  background: linear-gradient(135deg,
    color-mix(in srgb, var(--live) 25%, transparent) 0%,
    transparent 70%);
}
.joined .card-head h2 { font-size: 15px; font-weight: 550; color: var(--muted); }
.joined .cover { width: 52px; height: 52px; border-radius: 10px; }
.joined .song { font-size: 18px; }
.joined .step { height: 54px; }
.joined .toggle,
.joined .toggle[aria-pressed="true"] {
  height: 36px; font-size: 13px; font-weight: 500;
  background: none; border: 1px solid var(--edge); color: var(--muted);
}
.joined .toggle .dot { display: none; }
.joined .spotify { height: 40px; font-size: 13px; font-weight: 500; }
.joined .toggle:active { background: var(--raised); color: var(--ink); }

/* --- misc ------------------------------------------------------------- */
.wide { width: 100%; height: 50px; border-radius: 16px; font-size: 15px; }
.ghost { background: transparent; border: 1px solid var(--edge); color: var(--muted); }
.ghost:active { background: var(--card); color: var(--ink); }

.foot { margin: 2px 4px 0; min-height: 18px; font-size: 12px; color: var(--muted); text-align: center; }
.foot.bad { color: var(--warn); }

/* --- input sheet ------------------------------------------------------ */
.sheet-wrap { position: fixed; inset: 0; z-index: 10; display: flex; flex-direction: column; justify-content: flex-end; }
.scrim { position: absolute; inset: 0; background: rgba(4, 6, 11, .6); backdrop-filter: blur(3px); }

.sheet {
  position: relative;
  background: var(--card);
  border: 1px solid var(--edge);
  border-radius: 28px 28px 0 0;
  padding: 10px 16px calc(16px + env(safe-area-inset-bottom));
  max-height: 82vh;
  display: flex; flex-direction: column; gap: 12px;
  animation: rise .22s cubic-bezier(.22, .68, .3, 1);
}
@keyframes rise { from { transform: translateY(14%); opacity: .4; } }

.grabber { width: 38px; height: 4px; border-radius: 999px; background: var(--edge); margin: 2px auto 4px; }
.sheet h3 { margin: 0 4px; font-size: 14px; font-weight: 600; color: var(--muted); }

.options { display: flex; flex-direction: column; gap: 8px; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.option {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  min-height: 58px; padding: 0 16px;
  border-radius: 16px; background: var(--raised);
  font-size: 17px; text-align: left;
}
.option:active { transform: scale(.985); }
.option[aria-current="true"] { background: var(--accent); color: #fff; }
.option .code { font-size: 12px; color: var(--muted); }
.option[aria-current="true"] .code { color: rgba(255, 255, 255, .8); }

/* --- toast ------------------------------------------------------------ */
.toast {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(22px + env(safe-area-inset-bottom));
  z-index: 20; max-width: 90vw;
  padding: 12px 16px; border-radius: 14px;
  background: #2b1f24; border: 1px solid #52303a; color: #ffd9d4;
  font-size: 14px; box-shadow: 0 10px 30px rgba(0, 0, 0, .45);
}
.toast.ok { background: #172a21; border-color: #2a5540; color: #c9f7df; }

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