:root {
  --ink: #17201b;
  --muted: #5c6963;
  --paper: #f7f3ea;
  --panel: #fffaf0;
  --line: #ddd3c2;
  --sage: #879d8d;
  --tea: #c78d64;
  --deep: #24362d;
  --focus: #2e7d68;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 0%, rgba(199, 141, 100, 0.22), transparent 26rem),
    radial-gradient(circle at 86% 4%, rgba(135, 157, 141, 0.24), transparent 24rem),
    linear-gradient(135deg, #fbf8f1, var(--paper));
  font-family: "Segoe UI", "Noto Sans Thai", system-ui, sans-serif;
}

button,
select,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(340px, 0.75fr);
  gap: 18px;
}

.studio,
.controls,
.queue,
.notes {
  min-width: 0;
  background: rgba(255, 250, 240, 0.82);
  border: 1px solid rgba(221, 211, 194, 0.9);
  border-radius: 8px;
  backdrop-filter: blur(18px);
}

.studio {
  min-height: 560px;
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.masthead,
.queue-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--tea);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(30px, 5vw, 58px);
  line-height: 1;
  letter-spacing: 0;
}

.status-pill {
  min-width: 148px;
  padding: 10px 14px;
  border-radius: 999px;
  background: #edf2ea;
  color: var(--deep);
  text-align: center;
  font-size: 14px;
  font-weight: 700;
}

.now {
  flex: 1;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  align-items: center;
  gap: 28px;
}

.orbital {
  position: relative;
  aspect-ratio: 1;
  width: 100%;
  display: grid;
  place-items: center;
}

.ring,
.core {
  position: absolute;
  border-radius: 50%;
}

.ring-one {
  inset: 9%;
  border: 1px solid rgba(36, 54, 45, 0.18);
}

.ring-two {
  inset: 20%;
  border: 18px solid rgba(135, 157, 141, 0.18);
}

.is-playing .ring-two {
  animation: pulse 2.4s ease-in-out infinite;
}

.core {
  width: 46%;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  background: var(--deep);
  color: #fffaf0;
  font-weight: 800;
}

.session-label,
.line {
  color: var(--muted);
}

.audio-status {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 34px;
  margin: 0 0 8px;
  padding: 6px 10px;
  border: 1px solid rgba(221, 211, 194, 0.95);
  border-radius: 8px;
  background: #fffaf0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.audio-status.ready {
  border-color: rgba(46, 125, 104, 0.35);
  background: #edf6f1;
  color: var(--focus);
}

.audio-status.pending {
  border-color: rgba(199, 141, 100, 0.38);
  background: #fff4e6;
  color: #8c5d31;
}

.now-copy h2 {
  margin: 4px 0 8px;
  font-size: clamp(44px, 8vw, 96px);
  line-height: 0.95;
  letter-spacing: 0;
}

.now-copy p {
  max-width: 680px;
  font-size: 18px;
  line-height: 1.65;
}

.transport {
  display: flex;
  align-items: center;
  gap: 12px;
}

.play-btn,
.icon-btn,
.quiet-btn {
  border: 0;
  border-radius: 8px;
  min-height: 48px;
}

.play-btn {
  min-width: 164px;
  padding: 0 28px;
  background: var(--deep);
  color: white;
  font-weight: 800;
}

.icon-btn {
  width: 54px;
  background: #ede5d7;
  color: var(--deep);
  font-size: 30px;
}

.quiet-btn {
  padding: 0 18px;
  background: #efe7da;
  color: var(--deep);
  font-weight: 700;
}

.progress-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
}

.progress {
  flex: 1;
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: #e7ddce;
}

.progress span {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--sage), var(--tea));
}

.controls,
.queue,
.notes {
  padding: 18px;
}

.controls {
  display: grid;
  gap: 14px;
}

.control-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.control-row.speed-row {
  grid-template-columns: minmax(220px, 1fr);
}

.control-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.control-label output {
  color: var(--deep);
  font-size: 15px;
  font-weight: 900;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

select,
input[type="range"] {
  width: 100%;
  min-height: 42px;
}

select {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffdf8;
  color: var(--ink);
  padding: 0 10px;
}

.spelling-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 14px;
}

.example-line {
  display: block;
}

.letter-box {
  min-width: 34px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(36, 54, 45, 0.18);
  border-radius: 8px;
  background: rgba(255, 253, 248, 0.92);
  color: var(--deep);
  font-weight: 900;
  font-size: 18px;
}

.spelling-strip.mini {
  gap: 5px;
  margin: 7px 0 0;
}

.spelling-strip.mini .letter-box {
  min-width: 24px;
  height: 26px;
  border-radius: 6px;
  font-size: 13px;
}

.toggle-grid {
  display: grid;
  gap: 8px;
}

.toggle {
  grid-template-columns: 22px minmax(0, 1fr);
  align-items: center;
  padding: 10px 0;
  border-top: 1px solid rgba(221, 211, 194, 0.72);
}

.queue {
  max-height: 560px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.queue-list {
  margin-top: 12px;
  overflow: auto;
  display: grid;
}

.queue-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 13px 0;
  border-top: 1px solid rgba(221, 211, 194, 0.78);
}

.queue-index {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #efe7da;
  color: var(--muted);
  font-weight: 800;
}

.queue-item.active .queue-index {
  background: var(--focus);
  color: white;
}

.queue-item h4 {
  margin: 0;
  font-size: 17px;
}

.queue-item p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.badge {
  color: var(--tea);
  font-size: 12px;
  font-weight: 800;
}

.notes {
  grid-column: 1 / -1;
  color: var(--muted);
  line-height: 1.7;
}

.notes h3 {
  color: var(--ink);
}

.source {
  font-size: 13px;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.08);
    opacity: 0.45;
  }
}

@media (max-width: 900px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .now {
    grid-template-columns: 1fr;
  }

  .orbital {
    width: min(280px, 75vw);
    margin: 0 auto;
  }

  .control-row {
    grid-template-columns: 1fr;
  }
}