:root {
  --bg: #0a0f16;
  --bg-2: #101821;
  --elev: rgba(20, 30, 43, 0.86);
  --elev-solid: #15202d;
  --line: rgba(232, 238, 246, 0.1);
  --line-strong: rgba(232, 238, 246, 0.18);
  --text: #eef3f8;
  --muted: #93a3b8;
  --faint: #6d7d92;
  --gold: #e2b57a;
  --gold-dim: rgba(226, 181, 122, 0.16);
  --teal: #7ec8b8;
  --teal-dim: rgba(126, 200, 184, 0.14);
  --rose: #e07a5f;
  --ok: #9dcea8;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.38);
  --radius: 22px;
  --font: "Figtree", "Segoe UI", sans-serif;
  --display: "Fraunces", "Times New Roman", serif;
  --player-h: 196px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background:
    radial-gradient(1200px 600px at 50% -10%, #1a2c40 0%, transparent 60%),
    radial-gradient(800px 500px at 100% 20%, rgba(126, 200, 184, 0.08), transparent 50%),
    radial-gradient(700px 400px at 0% 80%, rgba(226, 181, 122, 0.07), transparent 45%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  padding-bottom: calc(var(--player-h) + 48px);
}

body::before {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 0;
}

a {
  color: var(--teal);
}

.wrap {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.banner {
  background: #1a140e;
  border-bottom: 1px solid rgba(226, 181, 122, 0.22);
  color: #f0d7b4;
  font-size: 0.88rem;
  padding: 10px 16px;
  text-align: center;
}

.banner strong {
  color: var(--gold);
}

header.hero {
  padding: 48px 0 28px;
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 32px;
  align-items: end;
}

.kicker {
  color: var(--gold);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 650;
  margin-bottom: 12px;
}

h1 {
  font-family: var(--display);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 14px;
}

.lede {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 58ch;
}

.hero-note {
  background: var(--elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-note h2 {
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 10px;
}

.hero-note ol {
  padding-left: 1.15rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-note li + li {
  margin-top: 6px;
}

.panel {
  background: var(--elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  margin: 16px 0;
  backdrop-filter: blur(16px);
}

.panel h2 {
  font-family: var(--display);
  font-size: 1.45rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.panel .sub {
  color: var(--muted);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.types {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.type-btn,
.ear-btn,
.chip {
  appearance: none;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  border-radius: 999px;
  padding: 9px 14px;
  font: inherit;
  font-weight: 580;
  cursor: pointer;
  transition: 0.18s ease;
}

.type-btn:hover,
.ear-btn:hover,
.sound-card:hover {
  border-color: rgba(126, 200, 184, 0.45);
  transform: translateY(-1px);
}

.type-btn.active {
  background: var(--teal-dim);
  border-color: var(--teal);
  color: #d9fff6;
}

.modes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 8px;
}

.mode {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.18);
}

.mode b {
  display: block;
  color: var(--gold);
  font-size: 0.84rem;
  margin-bottom: 4px;
}

.mode p {
  color: var(--muted);
  font-size: 0.8rem;
}

.grid {
  display: grid;
  grid-template-columns: 1.35fr 0.85fr;
  grid-template-areas: "tones pitch";
  gap: 16px;
}

.tones-panel {
  grid-area: tones;
}

.pitch-panel {
  grid-area: pitch;
}

.sounds {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.sound-card {
  text-align: left;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: inherit;
  border-radius: 18px;
  padding: 14px 14px 12px;
  cursor: pointer;
  font: inherit;
  min-height: 148px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: 0.18s ease;
  scroll-margin-bottom: calc(var(--player-h) + 20px);
}

.sound-card .tag {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 700;
}

.sound-card h3 {
  font-size: 1.02rem;
  font-weight: 650;
}

.sound-card p {
  color: var(--muted);
  font-size: 0.82rem;
  flex: 1;
}

.sound-card .fit {
  font-size: 0.75rem;
  color: var(--teal);
}

.sound-card.recommended {
  box-shadow: inset 0 0 0 1px rgba(126, 200, 184, 0.28);
}

.sound-card.selected {
  background: linear-gradient(180deg, rgba(226, 181, 122, 0.12), rgba(255, 255, 255, 0.03));
  border-color: var(--gold);
}

.pitch-readout {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 8px;
}

.pitch-readout strong {
  font-family: var(--display);
  font-size: 1.8rem;
  font-variant-numeric: tabular-nums;
}

.slider {
  width: 100%;
  accent-color: var(--gold);
  height: 28px;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.ghost {
  appearance: none;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--text);
  border-radius: 12px;
  padding: 8px 11px;
  font: inherit;
  cursor: pointer;
}

.ghost:hover {
  border-color: var(--gold);
}

.hint {
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.86rem;
}

.warn {
  color: #f0b4a6;
}

.research details {
  border-top: 1px solid var(--line);
  padding: 12px 0;
}

.research summary {
  cursor: pointer;
  font-weight: 650;
  list-style: none;
}

.research summary::-webkit-details-marker {
  display: none;
}

.research p,
.research li {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 8px;
}

.research ul {
  padding-left: 1.15rem;
}

body.page-terms {
  padding-bottom: 48px;
}

.page-terms .wrap {
  width: min(760px, calc(100% - 32px));
}

.terms-top {
  padding: 36px 0 16px;
}

.terms-top h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin-bottom: 8px;
}

.page-terms .lede {
  max-width: none;
}

.terms-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 8px;
}

a.ghost,
a.contact-open {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.legal p,
.legal li {
  color: var(--muted);
  font-size: 0.92rem;
}

.legal p + p,
.legal ul {
  margin-top: 12px;
}

.legal ul {
  padding-left: 1.15rem;
}

.legal li + li {
  margin-top: 8px;
}

.banner a,
footer.site a {
  color: var(--gold);
}

footer.site {
  color: var(--faint);
  font-size: 0.8rem;
  padding: 20px 0 32px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.7fr;
  gap: 28px;
  align-items: center;
}

.contact {
  scroll-margin-bottom: calc(var(--player-h) + 24px);
}

.contact p + p {
  margin-top: 12px;
  color: var(--muted);
}

.contact p {
  color: var(--muted);
}

.contact-cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.contact-open {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 12px 22px;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
  color: #1a140e;
  background: radial-gradient(circle at 30% 20%, #fff6e8, var(--gold) 58%, #b8864c);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
}

.contact-open:disabled {
  opacity: 0.55;
  cursor: wait;
}

.hp {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 20px 16px calc(var(--player-h) + 16px);
}

.modal[hidden] {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(6, 9, 14, 0.72);
  backdrop-filter: blur(8px);
}

.modal-card {
  position: relative;
  width: min(460px, 100%);
  background: #15202d;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 22px 22px 18px;
  box-shadow: var(--shadow);
  max-height: min(86vh, 720px);
  overflow: auto;
}

.modal-x {
  position: absolute;
  top: 10px;
  right: 12px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
}

.modal-card label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 12px;
  font-size: 0.88rem;
  font-weight: 600;
}

.modal-card input,
.modal-card textarea {
  font: inherit;
  font-weight: 400;
  color: var(--text);
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  padding: 10px 12px;
  width: 100%;
}

.modal-card textarea {
  resize: vertical;
  min-height: 92px;
}

.field-hint {
  font-weight: 400;
  color: var(--faint);
  font-size: 0.75rem;
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  align-items: center;
}

.form-status {
  min-height: 1.2em;
  margin-top: 10px;
  font-size: 0.88rem;
}

.form-status.error {
  color: #f0b4a6;
}

.form-status.ok {
  color: var(--ok);
}

body.modal-open {
  overflow: hidden;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.player {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  background: rgba(10, 15, 22, 0.92);
  border-top: 1px solid var(--line-strong);
  backdrop-filter: blur(18px);
}

.player-inner {
  width: min(1120px, calc(100% - 24px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 22px;
  align-items: center;
  padding: 14px 0;
}

.play {
  width: 84px;
  height: 84px;
  border: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff6e8, var(--gold) 55%, #b8864c);
  color: #1a140e;
  cursor: pointer;
  box-shadow: 0 0 0 8px rgba(226, 181, 122, 0.12), 0 12px 30px rgba(0, 0, 0, 0.35);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.play svg {
  width: 34px;
  height: 34px;
  fill: currentColor;
}

.play .icon-pause {
  display: none;
}

.play.playing .icon-play {
  display: none;
}

.play.playing .icon-pause {
  display: block;
}

.now h3 {
  font-size: 1.05rem;
}

.now p {
  color: var(--muted);
  font-size: 0.86rem;
}

.viz {
  width: 100%;
  height: 28px;
  margin: 6px 0 10px;
  display: block;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 280px;
}

.vol-warn {
  color: #f0b4a6;
  font-size: 0.75rem;
  line-height: 1.3;
  margin: 0;
}

.vol-row,
.ear-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.vol-row label,
.ear-row span {
  font-size: 0.78rem;
  color: var(--muted);
  width: 64px;
}

.ear-btns {
  display: flex;
  gap: 6px;
}

.ear-btn.active {
  background: var(--gold-dim);
  border-color: var(--gold);
}

.vol-row output {
  width: 42px;
  font-variant-numeric: tabular-nums;
  color: var(--gold);
}

.headphones {
  font-size: 0.78rem;
  color: var(--faint);
}

button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.research summary:hover {
  color: var(--gold);
}

@media (max-width: 900px) {
  header.hero,
  .modes,
  .sounds,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "pitch"
      "tones";
  }

  .player-inner {
    grid-template-columns: auto 1fr;
    gap: 12px;
    padding: 10px 0;
  }

  .controls {
    grid-column: 1 / -1;
    min-width: 0;
    align-items: center;
  }

  .vol-warn,
  .headphones {
    text-align: center;
    max-width: 36rem;
  }

  .vol-row,
  .ear-row {
    justify-content: center;
    width: min(100%, 420px);
  }

  .vol-row .slider {
    flex: 1;
    width: auto;
    min-width: 0;
  }

  .vol-row label,
  .ear-row span {
    width: auto;
  }

  .viz {
    display: none;
  }

  :root {
    --player-h: 240px;
  }
}

@media (max-width: 640px) {
  header.hero {
    padding-top: 22px;
    gap: 16px;
  }

  .play {
    width: 68px;
    height: 68px;
  }

  .play svg {
    width: 28px;
    height: 28px;
  }

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

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