/* ===== Pulse — room.css =====
   Dark-room aesthetic. Typography labels quietly; the canvas does the talking. */

@font-face {
  font-family: "Space Grotesk";
  src: url("/vendor/fonts/SpaceGrotesk-Variable.woff2") format("woff2-variations"),
       url("/vendor/fonts/SpaceGrotesk-Variable.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: "Fraunces";
  src: url("/vendor/fonts/Fraunces-Variable.woff2") format("woff2-variations"),
       url("/vendor/fonts/Fraunces-Variable.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Newsreader";
  src: url("/vendor/fonts/Newsreader-Italic-Variable.woff2") format("woff2-variations"),
       url("/vendor/fonts/Newsreader-Italic-Variable.woff2") format("woff2");
  font-weight: 300 500;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/vendor/fonts/Inter-Variable.woff2") format("woff2-variations"),
       url("/vendor/fonts/Inter-Variable.woff2") format("woff2");
  font-weight: 300 600;
  font-display: swap;
}

:root{
  --bg: #05070a;
  --ink: #eef1f4;
  --ink-dim: #9aa3ac;
  --ink-dimmer: #5b636b;
  --line: rgba(238,241,244,0.14);
  --accent: #c8ff8a;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

*{ box-sizing: border-box; }

html, body{
  margin:0; padding:0;
  width:100%; height:100%;
  background: var(--bg);
  color: var(--ink);
  overflow: hidden;
  font-family: "Inter", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#stage{
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display:block;
  touch-action: none;
}

/* soft, permanent scrims so the chrome/tracklist/readout stay legible against
   any of the four grammars — including a full-field lightning flash. Purely
   cosmetic, sits below the UI, above nothing (canvas is behind it). */
.stage-scrim-top, .stage-scrim-bottom{
  position: fixed;
  left:0; right:0;
  height: 110px;
  z-index: 30;
  pointer-events:none;
}
.stage-scrim-top{
  top:0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.38), rgba(0,0,0,0));
}
.stage-scrim-bottom{
  bottom:0;
  background: linear-gradient(to top, rgba(0,0,0,0.4), rgba(0,0,0,0));
}

/* ---------- transition scrim (dip-to-black between movements) ---------- */
.scrim{
  position: fixed;
  inset: 0;
  z-index: 35;
  background: var(--bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity .48s cubic-bezier(.4,0,.2,1);
}
.scrim.show{ opacity: 1; }

/* ---------- chrome ---------- */
.chrome{
  position: fixed;
  top: calc(18px + var(--safe-top));
  left: calc(20px + var(--safe-left));
  right: calc(20px + var(--safe-right));
  display:flex;
  justify-content: space-between;
  align-items:center;
  z-index: 40;
  pointer-events:none;
  font-family: "Space Grotesk", sans-serif;
  font-size: 12px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  text-shadow: 0 1px 3px rgba(0,0,0,0.7), 0 1px 12px rgba(0,0,0,0.4);
}
.chrome-link{
  pointer-events:auto;
  color: var(--ink-dim);
  text-decoration:none;
  border-bottom: 1px solid transparent;
  transition: color .25s ease, border-color .25s ease;
}
.chrome-link:hover{ color: var(--ink); border-color: var(--line); }
.chrome-label{ color: var(--ink-dimmer); }

/* ---------- invitation ---------- */
.invite{
  position: fixed;
  inset: 0;
  z-index: 60;
  display:flex;
  align-items:center;
  justify-content:center;
  background: radial-gradient(ellipse at 50% 40%, rgba(20,26,24,0.55), rgba(3,4,6,0.92) 70%);
  backdrop-filter: blur(2px);
  transition: opacity 1.1s cubic-bezier(.22,.7,.2,1), visibility 1.1s;
}
.invite.hidden{ opacity:0; visibility:hidden; pointer-events:none; }

.invite-inner{
  text-align:center;
  padding: 0 24px;
  max-width: 420px;
}
.invite-eyebrow{
  margin: 0 0 14px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.invite-title{
  margin: 0 0 34px;
  font-family: "Fraunces", serif;
  font-weight: 340;
  font-size: clamp(30px, 7vw, 46px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.invite-btn{
  position: relative;
  width: 96px; height: 96px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: "Space Grotesk", sans-serif;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  display:flex; align-items:center; justify-content:center;
  -webkit-tap-highlight-color: transparent;
  transition: border-color .3s ease, transform .3s ease;
}
.invite-btn:hover{ border-color: rgba(238,241,244,0.4); transform: scale(1.03); }
.invite-btn:active{ transform: scale(0.97); }
.invite-btn-ring{
  position:absolute; inset:-14px;
  border-radius:50%;
  border: 1px solid var(--line);
  animation: invite-pulse 3.2s ease-out infinite;
}
@keyframes invite-pulse{
  0%   { transform: scale(0.86); opacity: 0.7; }
  70%  { transform: scale(1.22); opacity: 0; }
  100% { transform: scale(1.22); opacity: 0; }
}
.invite-hint{
  margin: 28px 0 0;
  font-size: 12px;
  color: var(--ink-dimmer);
  letter-spacing: 0.02em;
}

@media (prefers-reduced-motion: reduce){
  .invite-btn-ring{ animation: none; }
}

/* ---------- tracklist ---------- */
.tracklist{
  position: fixed;
  left: calc(20px + var(--safe-left));
  bottom: calc(22px + var(--safe-bottom));
  z-index: 40;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .9s ease .2s, transform .9s ease .2s;
  pointer-events: none;
}
.tracklist.visible{ opacity:1; transform:none; pointer-events:auto; }

.tracklist ol{
  list-style:none;
  margin:0; padding:0;
  display:flex;
  flex-direction:column;
  gap: 2px;
}
.track-btn{
  display:flex;
  align-items:baseline;
  gap: 10px;
  background: none;
  border: none;
  color: var(--ink-dimmer);
  cursor:pointer;
  padding: 6px 4px;
  text-align:left;
  font-family: "Space Grotesk", sans-serif;
  -webkit-tap-highlight-color: transparent;
  transition: color .3s ease;
  text-shadow: 0 1px 3px rgba(0,0,0,0.7), 0 1px 12px rgba(0,0,0,0.4);
}
.track-index{
  font-size: 10px;
  letter-spacing: 0.06em;
  width: 16px;
  color: inherit;
  opacity: .7;
}
.track-name{
  font-size: 14px;
  letter-spacing: 0.02em;
  color: inherit;
  position: relative;
}
.track-sub{
  display:none;
}
.track-btn:hover{ color: var(--ink-dim); }
.track-btn.active{ color: var(--ink); }
.track-btn.active .track-name{
  color: var(--accent-ui, var(--accent));
}
.track-btn.active .track-name::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-4px;
  height:1px;
  background: var(--accent-ui, var(--accent));
  opacity: .6;
}

@media (min-width: 720px){
  .track-sub{
    display:inline-block;
    font-size: 11px;
    color: var(--ink-dimmer);
    letter-spacing: 0.01em;
    text-transform: none;
    margin-left: 6px;
    opacity: 0;
    transform: translateX(-4px);
    transition: opacity .3s ease, transform .3s ease;
  }
  .track-btn:hover .track-sub,
  .track-btn.active .track-sub{
    opacity: .8;
    transform:none;
  }
}

/* ---------- live readout ---------- */
.readout{
  position: fixed;
  right: calc(20px + var(--safe-right));
  bottom: calc(24px + var(--safe-bottom));
  z-index: 40;
  display:flex;
  align-items:center;
  gap: 10px;
  font-family: "Space Grotesk", sans-serif;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-dimmer);
  opacity: 0;
  transition: opacity .9s ease .3s;
  pointer-events:none;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 1px 3px rgba(0,0,0,0.7), 0 1px 12px rgba(0,0,0,0.4);
}
.readout.visible{ opacity: 0.85; }

.readout-time{ min-width: 34px; text-align:right; }

.readout-bands{
  display:flex;
  align-items:flex-end;
  gap: 3px;
  height: 22px;
}
.band-bar{
  width: 4px;
  height: 100%;
  display:flex;
  align-items:flex-end;
  overflow:hidden;
  background: rgba(255,255,255,0.06);
  border-radius: 1px;
}
.band-bar i{
  display:block;
  width:100%;
  height: 6%;
  background: var(--accent-ui, var(--accent));
  border-radius: 1px;
  transition: height .06s linear;
}
.readout-legend{ letter-spacing: 0.14em; font-size: 9px; opacity: .55; }

/* ---------- mute ---------- */
.mute-btn{
  position: fixed;
  right: calc(20px + var(--safe-right));
  top: calc(50px + var(--safe-top)); /* clear of the "07 — Pulse" label above it */
  z-index: 45;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(3,4,6,0.35);
  backdrop-filter: blur(3px);
  color: var(--ink-dim);
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
  display: none;
  align-items:center; justify-content:center;
  opacity: 0;
  transition: opacity .6s ease, color .25s ease, border-color .25s ease;
  -webkit-tap-highlight-color: transparent;
}
.mute-btn.visible{ display:flex; opacity: 0.8; }
.mute-btn:hover{ color: var(--ink); border-color: rgba(238,241,244,0.4); }
.mute-btn[aria-pressed="true"]{ color: var(--ink-dimmer); }

/* ---------- notes ---------- */
.notes-toggle{
  position: fixed;
  left: calc(20px + var(--safe-left));
  top: calc(16px + var(--safe-top));
  z-index: 45;
  background:none;
  border:none;
  color: var(--ink-dimmer);
  font-family: "Space Grotesk", sans-serif;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  padding: 6px 2px;
  margin-top: 22px;
  opacity: 0;
  transition: opacity .6s ease, color .25s ease;
  -webkit-tap-highlight-color: transparent;
  text-shadow: 0 1px 3px rgba(0,0,0,0.7), 0 1px 12px rgba(0,0,0,0.4);
}
.notes-toggle.visible{ opacity: .7; }
.notes-toggle:hover{ color: var(--ink); opacity:1; }

.notes{
  position: fixed;
  inset: 0;
  z-index: 70;
  background: rgba(3,4,6,0.94);
  backdrop-filter: blur(6px);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .5s ease, transform .5s ease, visibility .5s;
  -webkit-overflow-scrolling: touch;
}
.notes.open{ opacity:1; visibility:visible; transform:none; }

.notes-inner{
  max-width: 620px;
  margin: 0 auto;
  padding: calc(90px + var(--safe-top)) 28px calc(80px + var(--safe-bottom));
}
.notes-inner h2{
  font-family: "Fraunces", serif;
  font-weight: 340;
  font-size: 28px;
  margin: 0 0 30px;
  color: var(--ink);
}
.notes-inner h3{
  font-family: "Space Grotesk", sans-serif;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 34px 0 10px;
}
.notes-inner h3:first-of-type{ margin-top: 0; }
.notes-inner p{
  font-family: "Newsreader", "Inter", serif;
  font-style: italic;
  font-weight: 380;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink-dim);
  margin: 0 0 4px;
}

.notes-close{
  position: fixed;
  top: calc(16px + var(--safe-top));
  right: calc(20px + var(--safe-right));
  z-index: 71;
  background:none;
  border: 1px solid var(--line);
  color: var(--ink-dim);
  width: 30px; height: 30px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 15px;
  display:flex; align-items:center; justify-content:center;
}

/* ---------- small screens ---------- */
@media (max-width: 480px){
  .chrome{ font-size: 10.5px; }
  .invite-title{ font-size: 28px; }
  .tracklist{ bottom: calc(96px + var(--safe-bottom)); }
  .track-name{ font-size: 13px; }
  .readout{
    left: calc(20px + var(--safe-left));
    right: auto;
    bottom: calc(22px + var(--safe-bottom));
  }
}

@media (max-height: 560px){
  .invite-title{ margin-bottom: 22px; }
  .invite-btn{ width: 78px; height: 78px; }
}