/* Amplia site. Tokens mirror core/designsystem/Color.kt in the app repo (dark first). */
:root {
  --ink: #0a0e12;
  --panel: #141a21;
  --raised: #1e262f;
  --line: #26303b;
  --text: #e6edf3;
  --muted: #9aa7b4;
  --flat: #3a4652;
  --mint: #00e0a4;
  --on-mint: #002019;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Helvetica Neue", Arial, sans-serif;
  --display: ui-rounded, "SF Pro Rounded", "Nunito", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --measure: 68ch;
  --wide: 72rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  color-scheme: dark light;
}

@media (prefers-color-scheme: light) {
  :root {
    --ink: #f7f9f8;
    --panel: #ffffff;
    --raised: #ecefee;
    --line: #d5dbd9;
    --text: #0a0e12;
    --muted: #4f5a57;
    --flat: #b9c2bf;
    --mint: #00734f;
    --on-mint: #ffffff;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font: 400 1.0625rem/1.6 var(--font);
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--mint); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; border-radius: 4px; }

.skip {
  position: absolute; left: -999px; top: 0.5rem;
  background: var(--mint); color: var(--on-mint); padding: 0.5rem 0.9rem; border-radius: 8px;
}
.skip:focus { left: 0.5rem; z-index: 10; }

.wrap { width: 100%; max-width: var(--wide); margin: 0 auto; padding: 0 var(--gutter); }

/* ---------- header ---------- */
.top {
  display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap;
  padding-top: 1.25rem; padding-bottom: 1.25rem;
}
.brand {
  display: inline-flex; align-items: center; gap: 0.6rem;
  color: var(--text); text-decoration: none;
  font: 700 1.2rem/1 var(--display); letter-spacing: -0.01em;
}
.brand img { width: 2rem; height: 2rem; border-radius: 0.55rem; }
.nav { display: flex; gap: 1.1rem; flex-wrap: wrap; margin-left: auto; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); }

/* language switcher: <details>, no script, scales to any number of languages */
.lang { position: relative; font-size: 0.95rem; }
.lang summary {
  list-style: none; cursor: pointer; color: var(--muted);
  padding: 0.3rem 0.7rem; border: 1px solid var(--line); border-radius: 999px;
}
.lang summary::-webkit-details-marker { display: none; }
.lang summary:hover, .lang[open] summary { color: var(--text); border-color: var(--muted); }
.lang ul {
  position: absolute; right: 0; top: calc(100% + 0.4rem); z-index: 5;
  list-style: none; margin: 0; padding: 0.35rem; min-width: 10rem;
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
}
.lang li a {
  display: block; padding: 0.45rem 0.7rem; border-radius: 8px;
  color: var(--text); text-decoration: none;
}
.lang li a:hover { background: var(--raised); }
.lang li a[aria-current="true"] { color: var(--mint); }

/* ---------- home: hero ---------- */
.hero {
  display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  gap: clamp(2rem, 6vw, 5rem); align-items: center;
  padding-top: clamp(2rem, 7vw, 5.5rem); padding-bottom: clamp(3rem, 8vw, 6rem);
}
.hero h1 {
  font: 700 clamp(2.5rem, 6.4vw, 4.6rem)/1.02 var(--display);
  letter-spacing: -0.03em; margin: 0 0 1.4rem; max-width: 14ch;
  text-wrap: balance;
}
.lede { font-size: clamp(1.1rem, 1.8vw, 1.3rem); color: var(--muted); max-width: 42ch; margin: 0 0 2rem; }
.hero .fine { color: var(--muted); font-size: 0.95rem; margin: 1.1rem 0 0; max-width: 46ch; }
.hero figure { margin: 0; justify-self: center; max-width: 20rem; }
.hero figure img { border-radius: 1.6rem; border: 1px solid var(--line); }

.play {
  display: inline-flex; align-items: center; gap: 0.75rem;
  background: var(--mint); color: var(--on-mint); text-decoration: none;
  padding: 0.85rem 1.35rem 0.85rem 1.1rem; border-radius: 14px;
  font-weight: 650; font-size: 1.05rem; line-height: 1.15;
}
.play:hover { filter: brightness(1.08); }
.play svg { width: 1.5rem; height: 1.5rem; flex: none; }
.play small { display: block; font-weight: 500; font-size: 0.78rem; opacity: 0.8; }

/* ---------- home: the range, drawn to scale ---------- */
.range { border-top: 1px solid var(--line); padding-top: clamp(3rem, 7vw, 5rem); padding-bottom: clamp(3rem, 7vw, 5rem); }
.range h2, .section h2 {
  font: 700 clamp(1.7rem, 3.4vw, 2.5rem)/1.1 var(--display);
  letter-spacing: -0.02em; margin: 0 0 1rem; max-width: 22ch; text-wrap: balance;
}
.range > p { color: var(--muted); max-width: 60ch; margin: 0 0 2.5rem; }

/* twenty bars, one per dB, rising like the app icon; free share flat, Pro share in the accent */
.ramp {
  display: grid; grid-template-columns: 9fr 11fr;
  height: clamp(5.5rem, 17vw, 11rem);
  clip-path: polygon(0 82%, 100% 0, 100% 100%, 0 100%);
  -webkit-mask: repeating-linear-gradient(90deg, #000 0 calc(5% - 0.3rem), transparent calc(5% - 0.3rem) 5%);
  mask: repeating-linear-gradient(90deg, #000 0 calc(5% - 0.3rem), transparent calc(5% - 0.3rem) 5%);
}
.ramp span:first-child { background: var(--flat); }
.ramp span:last-child { background: var(--mint); }
.scale {
  display: grid; grid-template-columns: 9fr 11fr; margin-top: 0.9rem;
  font-variant-numeric: tabular-nums;
}
.scale div { display: grid; gap: 0.15rem; padding-right: 0.3rem; }
.scale b { font: 700 clamp(1.15rem, 2.6vw, 1.9rem)/1.1 var(--display); letter-spacing: -0.01em; justify-self: end; }
.scale span { color: var(--muted); font-size: 0.95rem; order: 1; }
.scale div:last-child b { color: var(--mint); }
.range .note { color: var(--muted); font-size: 0.95rem; margin: 2rem 0 0; max-width: 62ch; }

/* ---------- home: tiers ---------- */
.section { padding-top: clamp(3rem, 7vw, 5rem); padding-bottom: clamp(3rem, 7vw, 5rem); border-top: 1px solid var(--line); }
.tiers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1.5rem, 4vw, 3rem); margin-top: 2rem; }
.tiers h3 { font: 700 1.25rem/1.2 var(--display); margin: 0 0 0.9rem; }
.tiers ul { margin: 0; padding: 0; list-style: none; }
.tiers li { padding: 0.65rem 0; border-top: 1px solid var(--line); }
.tier-pro h3 { color: var(--mint); }
.tiers + p { color: var(--muted); margin: 2rem 0 0; max-width: 62ch; }

/* ---------- home: screens ---------- */
.screens {
  display: grid; grid-auto-flow: column; grid-auto-columns: minmax(13rem, 1fr);
  gap: 1.25rem; overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding-inline: var(--gutter);
  margin: 2rem calc(var(--gutter) * -1) 0; padding: 0 var(--gutter) 1rem;
}
.screens figure { margin: 0; scroll-snap-align: start; }
.screens img { border-radius: 1.1rem; border: 1px solid var(--line); }
.screens figcaption { color: var(--muted); font-size: 0.95rem; margin-top: 0.7rem; }

/* ---------- home: details ---------- */
.details { display: grid; grid-template-columns: minmax(0, 18rem) minmax(0, 1fr); gap: 0; margin: 2rem 0 0; }
.details dt, .details dd { padding: 1.2rem 0; border-top: 1px solid var(--line); margin: 0; }
.details dt { font: 700 1.1rem/1.35 var(--display); padding-right: 2rem; }
.details dd { color: var(--muted); max-width: 62ch; }

/* ---------- long-form pages (privacy, terms, support) ---------- */
.doc { max-width: var(--measure); padding-top: clamp(2rem, 5vw, 4rem); padding-bottom: clamp(3rem, 6vw, 5rem); }
.doc h1 { font: 700 clamp(2rem, 5vw, 3rem)/1.08 var(--display); letter-spacing: -0.02em; margin: 0 0 0.75rem; }
.doc .meta { color: var(--muted); margin: 0 0 2.5rem; }
.doc h2 {
  font: 700 1.05rem/1.3 var(--font); letter-spacing: 0.02em;
  margin: 2.6rem 0 0.8rem; padding-top: 1.4rem; border-top: 1px solid var(--line);
}
.doc h3 { font: 700 1.15rem/1.3 var(--display); margin: 2rem 0 0.6rem; }
.doc p { margin: 0 0 1rem; }
.doc ul { margin: 0 0 1rem; padding-left: 1.2rem; }
.doc li { margin: 0 0 0.55rem; padding-left: 0.2rem; }
.doc li::marker { color: var(--mint); }
.doc .binding { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 0.9rem 1.1rem; color: var(--muted); }
.doc a { overflow-wrap: anywhere; }

.faq details { border-top: 1px solid var(--line); }
.faq details:last-of-type { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 1.1rem 2rem 1.1rem 0; font: 650 1.1rem/1.4 var(--display); position: relative; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0.2rem; top: 1rem; color: var(--mint); font-size: 1.4rem; line-height: 1; }
.faq details[open] summary::after { content: "\2212"; }
.faq details > div { padding: 0 0 1.1rem; color: var(--muted); }
.faq details > div p { margin: 0 0 0.8rem; }

.contact {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1.25rem;
  background: var(--panel); border: 1px solid var(--line); border-radius: 16px;
  padding: 1.25rem 1.4rem; margin: 0 0 2.5rem;
}
.contact a { font: 700 1.25rem/1.2 var(--display); }
.contact p { margin: 0; color: var(--muted); }

/* ---------- 404 ---------- */
.lost { padding-top: clamp(3rem, 10vw, 7rem); padding-bottom: clamp(3rem, 10vw, 7rem); max-width: 40rem; }
.lost h1 { font: 700 clamp(2.2rem, 6vw, 3.6rem)/1.05 var(--display); letter-spacing: -0.02em; margin: 0 0 1rem; }
.lost p { color: var(--muted); }
.lost ul { padding-left: 1.2rem; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--line); padding-top: 2rem; padding-bottom: 2.5rem; color: var(--muted); font-size: 0.95rem; }
.foot nav { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; margin-bottom: 1rem; }
.foot a { color: var(--muted); }
.foot a:hover { color: var(--text); }
.foot p { margin: 0.3rem 0; }

@media (max-width: 52rem) {
  .hero { grid-template-columns: 1fr; }
  .hero figure { max-width: 15rem; justify-self: start; }
  .tiers { grid-template-columns: 1fr; }
  .details { grid-template-columns: 1fr; }
  .details dd { border-top: 0; padding-top: 0; }
}
@media (max-width: 34rem) {
  .nav { order: 3; width: 100%; margin-left: 0; }
  .lang { margin-left: auto; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}