/* ===== STICH demo — styles ===== */

:root {
  --bg:        #0d0a17;
  --bg-alt:    #120e20;
  --surface:   #1a1530;
  --surface-2: #221b3d;
  --border:    #2e2650;
  --text:      #ece9f7;
  --muted:     #a49dc4;
  --hum:       #8b7bf0;   /* humming accent (violet) */
  --hum-soft:  #b3a8ff;
  --cls:       #e6b24e;   /* classical accent (gold)  */
  --cls-soft:  #f2cd82;
  --radius:    16px;
  --maxw:      1080px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.15; font-weight: 600; }
a { color: inherit; }
code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  background: var(--surface-2);
  padding: 0.05em 0.4em;
  border-radius: 6px;
  font-size: 0.88em;
}

.accent-hum { color: var(--hum-soft); }
.accent-cls { color: var(--cls-soft); }

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem clamp(1rem, 4vw, 2.5rem);
  background: rgba(13, 10, 23, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav__brand {
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.04em;
}
.nav__logo { margin-right: 0.15rem; }
.nav__links { display: flex; gap: clamp(0.6rem, 2vw, 1.6rem); flex-wrap: wrap; }
.nav__links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.92rem;
  transition: color 0.15s;
}
.nav__links a:hover { color: var(--text); }

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: clamp(3rem, 9vw, 6.5rem) clamp(1rem, 4vw, 2.5rem) clamp(2rem, 6vw, 4rem);
  background:
    radial-gradient(1100px 500px at 78% -8%, rgba(230, 178, 78, 0.16), transparent 60%),
    radial-gradient(900px 480px at 8% 6%, rgba(139, 123, 240, 0.20), transparent 60%),
    var(--bg);
  overflow: hidden;
}
.hero__inner { max-width: var(--maxw); margin: 0 auto; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.72rem;
  color: var(--muted);
  margin: 0 0 1rem;
}
.hero__title {
  font-size: clamp(2.1rem, 6vw, 4rem);
  margin: 0 0 1.2rem;
  max-width: 15ch;
}
.hero__sub {
  max-width: 56ch;
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  color: var(--muted);
  margin: 0 0 2rem;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.hero__wave {
  display: block;
  width: 100%;
  height: 120px;
  margin-top: clamp(2rem, 5vw, 3.5rem);
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-size: 0.98rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s, box-shadow 0.15s, background 0.15s, opacity 0.15s;
}
.btn--primary {
  background: linear-gradient(120deg, var(--hum), #a58bf0 55%, var(--cls));
  color: #14101f;
  box-shadow: 0 8px 26px rgba(139, 123, 240, 0.28);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(139, 123, 240, 0.38); }
.btn--ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn--ghost:hover { background: var(--surface); transform: translateY(-2px); }
.btn--full { width: 100%; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; box-shadow: none; }

/* ===== Sections ===== */
.section {
  padding: clamp(3rem, 8vw, 5.5rem) clamp(1rem, 4vw, 2.5rem);
}
.section--alt { background: var(--bg-alt); }
.section > * { max-width: var(--maxw); margin-inline: auto; }
.section__head { margin-bottom: 2.5rem; }
.section__head h2 { font-size: clamp(1.7rem, 4vw, 2.6rem); margin: 0 0 0.4rem; }
.section__lead { color: var(--muted); font-size: 1.1rem; margin: 0; }

.two-col {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}
.prose p { margin: 0 0 1.1rem; font-size: 1.05rem; }
.prose p:last-child { margin-bottom: 0; }

.translate-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem;
  display: grid;
  gap: 1.2rem;
}
.translate-row { display: flex; align-items: center; justify-content: space-between; gap: 0.6rem; }
.translate-arrow { color: var(--muted); font-size: 1.3rem; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
}
.chip--hum { background: rgba(139, 123, 240, 0.16); color: var(--hum-soft); border: 1px solid rgba(139, 123, 240, 0.35); }
.chip--cls { background: rgba(230, 178, 78, 0.14); color: var(--cls-soft); border: 1px solid rgba(230, 178, 78, 0.35); }

/* ===== How ===== */
.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin-bottom: 2.5rem;
}
.how-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
}
.how-card__icon { font-size: 1.8rem; margin-bottom: 0.6rem; }
.how-card h3 { margin: 0 0 0.4rem; font-size: 1.2rem; }
.how-card p { margin: 0; color: var(--muted); }

.flow-diagram {
  margin-block: 0 1.2rem;
  padding: 1.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.flow-diagram__row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.node {
  padding: 0.6rem 1rem;
  border-radius: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.node--hum { background: rgba(139, 123, 240, 0.16); color: var(--hum-soft); }
.node--cls { background: rgba(230, 178, 78, 0.14); color: var(--cls-soft); }
.node--emb { background: rgba(255, 255, 255, 0.06); color: var(--muted); }
.edge { position: relative; min-width: 70px; height: 2px; background: var(--border); }
.edge__label {
  position: absolute;
  top: -1.5em;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.72rem;
  color: var(--muted);
  white-space: nowrap;
}
.flow-diagram figcaption { margin-top: 1rem; text-align: center; color: var(--muted); font-size: 0.92rem; }
.tech-note { color: var(--muted); font-size: 0.95rem; }
.tech-note strong { color: var(--text); }

/* ===== Gallery / players ===== */
.group-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  font-size: 1.15rem;
  margin-block: 2.2rem 1rem;
}
.group-arrow { color: var(--muted); }
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
}
.pair-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.3rem;
  display: grid;
  gap: 0.8rem;
}
.pair-card__title { font-weight: 600; font-family: var(--serif); font-size: 1.1rem; }

.player {
  --accent: var(--hum);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.7rem 0.85rem;
}
.player--out { --accent: var(--cls); }
.player__btn {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: var(--accent);
  color: #14101f;
  font-size: 1rem;
  display: grid;
  place-items: center;
  transition: transform 0.12s, filter 0.12s;
}
.player__btn:hover { transform: scale(1.06); filter: brightness(1.08); }
.player__main { flex: 1; min-width: 0; }
.player__label { font-size: 0.78rem; color: var(--muted); margin-bottom: 0.3rem; }
.player__wave { display: block; width: 100%; height: 34px; cursor: pointer; }
.player__time { font-size: 0.72rem; color: var(--muted); font-variant-numeric: tabular-nums; flex: none; }

/* Quiet aside under a section -- context, not a warning, so no dashed border. */
.note {
  margin-top: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--hum);
  color: var(--muted);
  padding: 0.85rem 1.1rem;
  border-radius: 12px;
  font-size: 0.92rem;
}
.note strong { color: var(--text); }

/* ===== Try ===== */
.try { display: grid; gap: 1.4rem; }
.try__form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
  display: grid;
  gap: 1.2rem;
}
.dropzone {
  display: grid;
  justify-items: center;
  gap: 0.5rem;
  padding: 2.2rem 1rem;
  text-align: center;
  border: 2px dashed var(--border);
  border-radius: 14px;
  background: var(--surface-2);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone:hover, .dropzone.is-drag { border-color: var(--hum); background: rgba(139, 123, 240, 0.08); }
.dropzone__icon { font-size: 2rem; }
.dropzone__hint { font-size: 0.82rem; color: var(--muted); }
.dropzone.has-file { border-style: solid; border-color: var(--hum); }

.recorder { display: grid; justify-items: center; gap: 0.7rem; }
.recorder__or {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  width: 100%;
  color: var(--muted);
  font-size: 0.82rem;
}
.recorder__or::before, .recorder__or::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}
.recorder__status { font-size: 0.82rem; color: var(--muted); min-height: 1.2em; text-align: center; }
.recorder__status.is-error { color: #ff8f8f; }
#recordBtn.is-recording {
  border-color: var(--hum);
  color: var(--hum-soft);
  background: rgba(139, 123, 240, 0.14);
  animation: rec-pulse 1.4s ease-in-out infinite;
}
@keyframes rec-pulse {
  50% { box-shadow: 0 0 0 6px rgba(139, 123, 240, 0.14); }
}
@media (prefers-reduced-motion: reduce) {
  #recordBtn.is-recording { animation: none; }
}

.try__result {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.2rem;
  align-items: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem;
}
.result-col h4 { margin: 0 0 0.7rem; font-size: 1rem; }
.result-arrow { align-self: center; color: var(--muted); font-size: 1.6rem; }
.result-status { color: var(--muted); font-size: 0.92rem; min-height: 1.4em; }
.result-status.is-loading::before {
  content: "";
  display: inline-block;
  width: 0.9em; height: 0.9em;
  margin-right: 0.5em;
  border: 2px solid var(--border);
  border-top-color: var(--hum);
  border-radius: 50%;
  vertical-align: -0.1em;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.result-status.is-error { color: #ff8f8f; }
.download-link {
  display: inline-block;
  margin-top: 0.7rem;
  font-size: 0.9rem;
  color: var(--cls-soft);
  text-decoration: none;
}
.download-link:hover { text-decoration: underline; }

/* ===== Under the hood ===== */
.statbar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.6rem;
}
.stat {
  background: linear-gradient(160deg, var(--surface-2), var(--surface));
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.3rem 1.2rem;
  text-align: center;
}
.stat__n {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(90deg, var(--hum-soft), var(--cls));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat__u { font-size: 0.6em; }
.stat__k {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.4rem;
}

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}
.fact {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem 1.2rem;
}
.fact__k { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); margin-bottom: 0.35rem; }
.fact__v { font-size: 0.98rem; }

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 3rem 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  background: var(--bg-alt);
}
.footer__brand { font-family: var(--serif); font-size: 1.3rem; color: var(--text); margin: 0 0 0.5rem; }
.footer p { margin: 0.2rem 0; }
.footer__muted { font-size: 0.82rem; opacity: 0.8; }

/* ===== Responsive ===== */
@media (max-width: 760px) {
  .two-col { grid-template-columns: 1fr; }
  .how-grid { grid-template-columns: 1fr; }
  .try__result { grid-template-columns: 1fr; }
  .result-arrow { transform: rotate(90deg); }
  .nav__links { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition: none !important; }
}