/* EarsMixer site — styled after Apple's iOS documentation and support pages.
   iOS system colours, SF type scale, grouped inset lists, translucent nav bar.
   Follows the reader's light/dark setting. */

:root {
  color-scheme: light dark;

  /* iOS system colours (light) */
  --blue: #007aff;
  --green: #34c759;
  --orange: #ff9500;
  --label: #000000;
  --label-2: rgba(60, 60, 67, 0.6);
  --label-3: rgba(60, 60, 67, 0.3);
  --separator: rgba(60, 60, 67, 0.29);
  --bg: #ffffff;
  --grouped-bg: #f2f2f7;
  --cell: #ffffff;
  --fill: rgba(120, 120, 128, 0.12);
  --bar: rgba(249, 249, 249, 0.8);

  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro", "Helvetica Neue", "Segoe UI", system-ui, sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro", "Helvetica Neue", "Segoe UI", system-ui, sans-serif;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --blue: #0a84ff;
    --green: #30d158;
    --orange: #ff9f0a;
    --label: #ffffff;
    --label-2: rgba(235, 235, 245, 0.6);
    --label-3: rgba(235, 235, 245, 0.3);
    --separator: rgba(84, 84, 88, 0.6);
    --bg: #000000;
    --grouped-bg: #000000;
    --cell: #1c1c1e;
    --fill: rgba(118, 118, 128, 0.24);
    --bar: rgba(29, 29, 31, 0.72);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--grouped-bg);
  color: var(--label);
  font: 17px/1.47 var(--font);
  letter-spacing: -0.022em;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Navigation bar ---------- */

.navbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bar);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 0.5px solid var(--separator);
}
.navbar-inner {
  max-width: 980px;
  margin: 0 auto;
  height: 52px;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.navbar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--label);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.012em;
}
.navbar .brand:hover { text-decoration: none; }
.navbar .brand img {
  width: 28px;
  height: 28px;
  border-radius: 6.5px; /* iOS icon corner ratio */
}
.navbar nav { display: flex; gap: 22px; }
.navbar nav a {
  color: var(--label);
  font-size: 13px;
  opacity: 0.8;
  letter-spacing: -0.01em;
}
.navbar nav a:hover { opacity: 1; text-decoration: none; }
.navbar nav a[aria-current="page"] { opacity: 1; font-weight: 600; }

/* ---------- Page layout ---------- */

main {
  max-width: 692px;
  margin: 0 auto;
  padding: 44px 22px 72px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--label-2);
  font-size: 17px;
  font-weight: 600;
}

h1 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 40px;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: 0.004em;
}

.lede {
  margin: 0 0 36px;
  color: var(--label-2);
  font-size: 21px;
  line-height: 1.38;
  letter-spacing: 0.011em;
}

h2 {
  margin: 44px 0 10px;
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.14;
  font-weight: 700;
  letter-spacing: 0.007em;
}

p { margin: 0 0 16px; }

ul.bullets { margin: 0 0 16px; padding-left: 22px; }
ul.bullets li { margin: 6px 0; }

.meta { color: var(--label-2); font-size: 14px; margin: 0 0 32px; }

/* ---------- Grouped inset list (iOS Settings style) ---------- */

.list-header {
  margin: 28px 16px 7px;
  color: var(--label-2);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: -0.006em;
}
.list-footer {
  margin: 7px 16px 0;
  color: var(--label-2);
  font-size: 13px;
  line-height: 1.38;
}

.list {
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--cell);
  border-radius: var(--radius);
  overflow: hidden;
}
.list > li,
.list > a,
.list > details {
  position: relative;
  display: block;
  padding: 11px 16px;
  color: var(--label);
}
/* inset separators */
.list > li + li::before,
.list > a + a::before,
.list > details + details::before {
  content: "";
  position: absolute;
  top: 0;
  left: 16px;
  right: 0;
  border-top: 0.5px solid var(--separator);
}
.list.with-icons > li + li::before,
.list.with-icons > a + a::before { left: 60px; }

/* Numbered steps */
.list.steps { counter-reset: step; }
.list.steps > li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding-left: 16px;
}
.list.steps > li::after {
  counter-increment: step;
  content: counter(step);
  order: -1;
  flex: 0 0 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}
.list.steps > li + li::before { left: 58px; }

/* Disclosure rows (FAQ) */
.list details summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin: -11px -16px;
  padding: 11px 16px;
}
.list details summary::-webkit-details-marker { display: none; }
.list details summary::after {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--label-3);
  border-bottom: 2px solid var(--label-3);
  transform: rotate(-45deg);
  transition: transform 0.2s ease;
}
.list details[open] summary::after { transform: rotate(45deg); }
.list details p {
  margin: 18px 0 2px;
  color: var(--label-2);
  font-size: 15px;
  line-height: 1.4;
}

/* Tappable link rows with chevron */
.list > a { display: flex; align-items: center; gap: 14px; }
.list > a:hover { text-decoration: none; background: var(--fill); }
.list > a::after {
  content: "";
  margin-left: auto;
  width: 7px;
  height: 7px;
  border-right: 2px solid var(--label-3);
  border-top: 2px solid var(--label-3);
  transform: rotate(45deg);
}
.row-icon {
  flex: 0 0 30px;
  width: 30px;
  height: 30px;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.row-icon.blue { background: var(--blue); }
.row-icon.green { background: var(--green); }
.row-icon.orange { background: var(--orange); }
.row-text { display: flex; flex-direction: column; line-height: 1.25; }
.row-text small { color: var(--label-2); font-size: 13px; }

/* ---------- Hero (landing) ---------- */

.hero { text-align: center; padding-top: 16px; }
.hero .app-icon {
  width: 120px;
  height: 120px;
  border-radius: 27px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  margin-bottom: 22px;
}
.hero h1 { font-size: 48px; line-height: 1.08; }
.hero .lede { margin-left: auto; margin-right: auto; max-width: 560px; }
.badge {
  display: inline-block;
  margin-bottom: 14px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--fill);
  color: var(--label-2);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.button {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 980px;
  background: var(--blue);
  color: #fff;
  font-size: 17px;
  font-weight: 400;
}
.button:hover { text-decoration: none; filter: brightness(1.08); }

/* ---------- Callout (Apple docs "Note") ---------- */

.callout {
  margin: 28px 0;
  padding: 14px 18px;
  border-radius: var(--radius);
  background: var(--cell);
  border-left: 4px solid var(--blue);
}
.callout strong { display: block; margin-bottom: 2px; }
.callout p { margin: 0; color: var(--label-2); font-size: 15px; }

/* ---------- Footer ---------- */

footer {
  border-top: 0.5px solid var(--separator);
  color: var(--label-2);
  font-size: 12px;
}
.footer-inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 18px 22px 28px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 18px;
}
footer nav { display: flex; gap: 18px; }
footer a { color: var(--label-2); }

@media (max-width: 600px) {
  h1 { font-size: 32px; }
  .hero h1 { font-size: 36px; }
  .lede { font-size: 19px; }
  h2 { font-size: 24px; }
  .navbar nav { gap: 16px; }
}