:root {
  --ink: #eef3f6;
  --dim: rgba(238, 243, 246, 0.46);
  --hair: rgba(238, 243, 246, 0.14);
  --teal: #6fd0d8;
  --ember: #ffb178;
  --serif: "Cormorant Garamond", "Iowan Old Style", Georgia, serif;
  --sans: ui-sans-serif, -apple-system, "SF Pro Text", "Inter", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: #04060c;
  color: var(--ink);
  font-family: var(--sans);
  overflow: hidden;
  overscroll-behavior: none;
}

body { cursor: default; }
body.idle { cursor: none; }

#stage {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

/* ------------------------------------------------------------- boot ---- */

#boot {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: #04060c;
  z-index: 40;
  transition: opacity 0.7s var(--ease), visibility 0.7s;
}
#boot.gone { opacity: 0; visibility: hidden; }

.boot-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--hair);
  border-top-color: var(--teal);
  animation: spin 1.1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ------------------------------------------------------------ intro ---- */

#intro, #unsupported {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 30;
  padding: 6vh 7vw;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1.1s var(--ease), visibility 1.1s;
  background:
    radial-gradient(120% 90% at 50% 42%, rgba(4, 8, 16, 0.28) 0%, rgba(3, 5, 11, 0.9) 72%);
  backdrop-filter: blur(1.5px);
}
#intro.ready, #unsupported.show { opacity: 1; visibility: visible; }
#intro.gone { opacity: 0; visibility: hidden; pointer-events: none; }

.intro-inner {
  max-width: 47rem;
  text-align: center;
  animation: rise 1.5s var(--ease) both;
}
@keyframes rise {
  from { opacity: 0; transform: translateY(14px); filter: blur(6px); }
  to   { opacity: 1; transform: none; filter: none; }
}

.eyebrow {
  margin: 0 0 1.9rem;
  font-size: 0.66rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--dim);
}

#intro h1, #unsupported h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(2.9rem, 8.4vw, 6.4rem);
  line-height: 0.98;
  letter-spacing: 0.005em;
  text-wrap: balance;
}
#intro h1 em, #unsupported h1 em {
  font-style: italic;
  background: linear-gradient(96deg, var(--teal) 8%, #cfe9e6 52%, var(--ember) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.blurb {
  margin: 1.9rem auto 0;
  max-width: 34rem;
  font-size: 0.94rem;
  line-height: 1.75;
  color: rgba(238, 243, 246, 0.66);
  text-wrap: pretty;
}

.detail {
  margin-top: 1.5rem;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.75rem;
  color: rgba(255, 177, 120, 0.75);
}

.actions {
  margin-top: 2.6rem;
  display: flex;
  gap: 0.7rem;
  justify-content: center;
  flex-wrap: wrap;
}

button {
  font: inherit;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--hair);
  border-radius: 999px;
  padding: 0.72rem 1.5rem;
  cursor: pointer;
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease),
              transform 0.35s var(--ease), color 0.35s var(--ease);
}
button:hover {
  background: rgba(255, 255, 255, 0.085);
  border-color: rgba(238, 243, 246, 0.32);
  transform: translateY(-1px);
}
button:active { transform: translateY(0); }
button:focus-visible { outline: 1px solid var(--teal); outline-offset: 3px; }
button:disabled { cursor: progress; }

/* Loading a 6 MB track takes a beat - say so rather than looking dead. */
button.loading > span { visibility: hidden; }
button.loading::after {
  content: "";
  position: absolute;
  width: 15px;
  height: 15px;
  margin: -7.5px 0 0 -7.5px;
  top: 50%;
  left: 50%;
  border-radius: 50%;
  border: 1px solid rgba(111, 208, 216, 0.3);
  border-top-color: var(--teal);
  animation: spin 0.85s linear infinite;
}
button { position: relative; }

button.primary {
  border-color: rgba(111, 208, 216, 0.5);
  background: linear-gradient(180deg, rgba(111, 208, 216, 0.16), rgba(111, 208, 216, 0.06));
  box-shadow: 0 0 0 0 rgba(111, 208, 216, 0.35);
  animation: breathe 3.6s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { box-shadow: 0 0 22px -8px rgba(111, 208, 216, 0.55); }
  50%      { box-shadow: 0 0 34px -6px rgba(111, 208, 216, 0.85); }
}

#input-picker {
  margin-top: 1.4rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
}
#input-picker[hidden] { display: none; }
#input-device {
  font: inherit;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: none;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--hair);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  max-width: 20rem;
}
#input-device:focus-visible { outline: 1px solid var(--teal); outline-offset: 2px; }

/* The SoundCloud panel: a link, a play button, a line of state. */
#sc-panel {
  margin: 1.3rem auto 0;
  max-width: 30rem;
}
#sc-panel[hidden] { display: none; }
.sc-row { display: flex; gap: 0.5rem; }
#sc-url {
  flex: 1;
  min-width: 0;
  font: inherit;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--hair);
  border-radius: 999px;
  padding: 0.66rem 1.1rem;
}
#sc-url::placeholder { color: rgba(238, 243, 246, 0.34); }
#sc-url:focus-visible { outline: 1px solid var(--teal); outline-offset: 2px; }
.sc-status {
  margin-top: 0.7rem;
  font-size: 0.7rem;
  letter-spacing: 0.11em;
  color: rgba(238, 243, 246, 0.42);
}
button.link {
  font-size: 0.7rem;
  letter-spacing: 0.11em;
  color: var(--teal);
  background: none;
  border: none;
  padding: 0 0.3rem;
}
button.link:hover { background: none; transform: none; text-decoration: underline; }
button.link[hidden] { display: none; }

.hint {
  margin-top: 2.2rem;
  font-size: 0.72rem;
  letter-spacing: 0.11em;
  color: rgba(238, 243, 246, 0.34);
}

kbd {
  font-family: var(--sans);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  padding: 0.14em 0.44em;
  border: 1px solid var(--hair);
  border-radius: 4px;
  color: rgba(238, 243, 246, 0.62);
}

/* -------------------------------------------------------------- hud ---- */

#hud {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  padding: 0 clamp(0.9rem, 2.4vw, 2rem) clamp(0.7rem, 1.6vw, 1.1rem);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease), visibility 0.6s;
  background: linear-gradient(180deg, transparent, rgba(3, 5, 11, 0.72) 62%);
  pointer-events: none;
}
#hud.show { opacity: 1; visibility: visible; transform: none; }
body.idle #hud.show,
body.chrome-hidden #hud.show { opacity: 0; transform: translateY(10px); }
#hud > * { pointer-events: auto; }

.hud-row {
  display: grid;
  grid-template-columns: minmax(9rem, 18rem) minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(0.8rem, 2.4vw, 2.2rem);
  padding-bottom: 0.75rem;
}

.hud-left { display: flex; align-items: center; gap: 0.85rem; min-width: 0; }

#transport {
  width: 34px;
  height: 34px;
  padding: 0;
  display: grid;
  place-items: center;
  border-radius: 50%;
  flex: 0 0 auto;
}
#transport svg { width: 15px; height: 15px; fill: var(--ink); grid-area: 1 / 1; }
#transport .i-play { display: none; }
#transport.paused .i-play { display: block; }
#transport.paused .i-pause { display: none; }

.meta { display: flex; flex-direction: column; gap: 0.16rem; min-width: 0; }
#track-link { font-size: 0.66rem; letter-spacing: 0.1em; text-decoration: none; }
#track-link:hover { text-decoration: underline; }
#track-link[hidden] { display: none; }
#track-name {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.06rem;
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.dim { color: var(--dim); }
#time { font-size: 0.68rem; letter-spacing: 0.1em; font-variant-numeric: tabular-nums; }

#ribbon {
  width: 100%;
  height: 40px;
  display: block;
  opacity: 0.9;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}

.hud-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.6rem;
  min-width: 0;
}

.pill {
  font-size: 0.63rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 0.28em 0.7em;
  border: 1px solid var(--hair);
  border-radius: 999px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.keys {
  display: flex;
  align-items: center;
  gap: 0.34rem;
  font-size: 0.63rem;
  letter-spacing: 0.1em;
  color: rgba(238, 243, 246, 0.3);
  white-space: nowrap;
}
@media (max-width: 1080px) { .keys { display: none; } }
@media (max-width: 720px) {
  .hud-row { grid-template-columns: 1fr auto; }
  #ribbon { grid-column: 1 / -1; grid-row: 2; height: 34px; }
}

#progress {
  height: 2px;
  background: rgba(238, 243, 246, 0.1);
  border-radius: 2px;
  cursor: pointer;
  position: relative;
}
#progress.hidden { visibility: hidden; }
#progress::after {
  content: "";
  position: absolute;
  inset: -8px 0;
}
#progress-fill {
  height: 100%;
  width: 100%;
  transform-origin: left;
  transform: scaleX(0);
  border-radius: 2px;
  background: linear-gradient(90deg, var(--teal), #cfe9e6 60%, var(--ember));
}

/* ------------------------------------------------------- misc chrome ---- */

#toast {
  position: fixed;
  left: 50%;
  bottom: 5.6rem;
  transform: translate(-50%, 8px);
  z-index: 25;
  padding: 0.55rem 1.05rem;
  font-size: 0.72rem;
  letter-spacing: 0.11em;
  border: 1px solid var(--hair);
  border-radius: 999px;
  background: rgba(8, 12, 20, 0.82);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease), visibility 0.4s;
  white-space: nowrap;
}
#toast.show { opacity: 1; visibility: visible; transform: translate(-50%, 0); }

#dropzone {
  position: fixed;
  inset: 1rem;
  z-index: 35;
  display: grid;
  place-items: center;
  border: 1px dashed rgba(111, 208, 216, 0.45);
  border-radius: 16px;
  background: rgba(4, 10, 18, 0.55);
  backdrop-filter: blur(6px);
  font-size: 0.74rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--teal);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s var(--ease), visibility 0.25s;
  pointer-events: none;
}
body.dropping #dropzone { opacity: 1; visibility: visible; }

@media (prefers-reduced-motion: reduce) {
  .intro-inner { animation: none; }
  button.primary { animation: none; }
}