.radio-shell {
  min-height: calc(100vh - 6rem);
  display: grid;
  place-items: center;
}

.radio-card {
  position: relative;
  width: min(42rem, 100%);
  overflow: hidden;
  padding: clamp(1.3rem, 5vw, 2.4rem);
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  background:
    radial-gradient(circle at 20% 10%, rgba(239, 157, 96, 0.32), transparent 32%),
    radial-gradient(circle at 82% 80%, rgba(255, 255, 255, 0.12), transparent 34%),
    var(--paper);
  box-shadow: var(--shadow);
  isolation: isolate;
}

.radio-card::before {
  content: "";
  position: absolute;
  inset: auto -18% -42% -18%;
  height: 18rem;
  background: linear-gradient(90deg, rgba(239, 157, 96, 0.2), rgba(255, 255, 255, 0.06), rgba(239, 157, 96, 0.14));
  filter: blur(26px);
  z-index: -1;
}

.radio-card h1 {
  margin: 0;
  font-size: clamp(2.2rem, 8vw, 4.8rem);
  line-height: 0.95;
  letter-spacing: -0.055em;
}

.radio-lede,
.radio-smallprint {
  color: var(--muted);
  line-height: 1.5;
}

.radio-status {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 1rem 0 1.2rem;
  padding: 0.48rem 0.72rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.radio-status__dot {
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 999px;
  background: #777;
  box-shadow: 0 0 0 rgba(239, 157, 96, 0);
}

.radio-status[data-state="playing"] .radio-status__dot {
  background: #3bd671;
  box-shadow: 0 0 0 0.32rem rgba(59, 214, 113, 0.15);
}

.radio-status[data-state="connecting"] .radio-status__dot,
.radio-status[data-state="buffering"] .radio-status__dot,
.radio-status[data-state="reconnecting"] .radio-status__dot,
.radio-status[data-state="interrupted"] .radio-status__dot {
  background: var(--accent);
  animation: radioPulse 1s ease-in-out infinite;
}

.radio-status[data-state="failed"] .radio-status__dot,
.radio-status[data-state="lost"] .radio-status__dot,
.radio-status[data-state="offline"] .radio-status__dot {
  background: #ff5c5c;
}

.radio-play {
  position: relative;
  display: grid;
  place-items: center;
  width: min(17rem, 74vw);
  height: min(17rem, 74vw);
  margin: 0 auto 1.2rem;
  border: 1px solid rgba(239, 157, 96, 0.55);
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 25%, rgba(255, 255, 255, 0.22), transparent 20%),
    radial-gradient(circle, var(--accent), #9b3d0e 68%, #170905);
  color: #fff;
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.35);
  cursor: pointer;
  touch-action: manipulation;
}

.radio-play:focus-visible,
.radio-retry:focus-visible {
  outline: 3px solid var(--accent-dark);
  outline-offset: 4px;
}

.radio-play__ring {
  position: absolute;
  inset: 0.7rem;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 50%;
}

.radio-play__text {
  position: relative;
  font-size: clamp(1.45rem, 6vw, 2.45rem);
  font-weight: 950;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.radio-play.is-playing {
  background:
    radial-gradient(circle at 35% 25%, rgba(255, 255, 255, 0.2), transparent 20%),
    radial-gradient(circle, #252525, #050505 70%);
}

.radio-play.is-busy .radio-play__ring {
  animation: radioSpin 1.1s linear infinite;
  border-top-color: #fff;
}

.radio-retry {
  display: block;
  min-height: 44px;
  margin: 0 auto 1rem;
  padding: 0 1rem;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: transparent;
  color: var(--accent);
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
}

.radio-retry[hidden] {
  display: none;
}

.radio-diagnostics {
  margin-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.radio-diagnostics summary {
  min-height: 44px;
  padding-top: 0.8rem;
  cursor: pointer;
}

.radio-diagnostics dl {
  display: grid;
  gap: 0.4rem;
  margin: 0.3rem 0 0;
}

.radio-diagnostics dl div {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 0.8rem;
}

.radio-diagnostics dt {
  font-weight: 800;
}

.radio-diagnostics dd {
  margin: 0;
  overflow-wrap: anywhere;
}

@keyframes radioPulse {
  0%, 100% { transform: scale(1); opacity: 0.85; }
  50% { transform: scale(1.45); opacity: 1; }
}

@keyframes radioSpin {
  to { transform: rotate(360deg); }
}

@media (max-width: 640px) {
  .radio-shell {
    place-items: start;
  }

  .radio-card {
    border-radius: 1rem;
  }
}