/* Auralo site: shared styles (tokens, type, nav, footer, buttons, legal/support pages).
   Home-page layout lives in home.css. No framework. */

@font-face {
  /* Metric-matched fallback so the serif headlines don't shift when Instrument Serif arrives. */
  font-family: "Serif Fallback";
  src: local("Times New Roman"), local("Times"), local("Georgia");
  size-adjust: 94%;
  ascent-override: 96%;
  descent-override: 25%;
}

:root {
  --serif: "Instrument Serif", "Serif Fallback", Georgia, serif;
  /* Body = the app's own typeface on Apple devices, so UI fragments read exactly like the app. */
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --rounded: ui-rounded, "SF Pro Rounded", var(--sans);

  /* Paper & ink */
  --paper: #f6f3ee;
  --paper-2: #ede8e0;
  --surface: #fffdf9;
  --ink: #17142b;
  --ink-2: #4f4b64;      /* 7.6:1 on paper */
  --ink-3: #6b6780;      /* 5.0:1 on paper, captions only */
  --rule: rgba(23, 20, 43, 0.12);
  --accent: #4b2fc0;     /* 8.1:1 on paper */
  --accent-ink: #fff;
  --focus: #6a2cc9;

  /* Aura (brand icon: night indigo -> violet) */
  --indigo: #2e2380;
  --violet: #7b3fe4;
  --glow: rgba(123, 63, 228, 0.22);

  /* App metric colours (Theme.swift, vivid) */
  --m-recovery: #ffb81a;
  --m-plan: #34c759;
  --m-stress: #30b0c7;
  --m-sleep: #5856d6;
  --m-streak: #ff6a1a;

  /* App UI (for recreated fragments) */
  --app-bg: #f2f2f7;
  --app-card: #ffffff;
  --app-text: #111;
  --app-text-2: #6d6d72;

  --wrap: 1240px;
  --pad: clamp(16px, 4vw, 48px);
  --radius: 22px;
  --gutter: clamp(16px, 2.4vw, 32px);
  --sec-l: clamp(72px, 9vw, 120px);
  --sec-m: clamp(56px, 7vw, 96px);
  --sec-s: clamp(40px, 5vw, 64px);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f0d1d; --paper-2: #17142a; --surface: #1b1830;
    --ink: #f3f0e9; --ink-2: #bdb8cf; --ink-3: #9f9ab3;
    --rule: rgba(243, 240, 233, 0.13);
    --accent: #c3b1ff; --accent-ink: #17142b; --focus: #c3b1ff;
    --glow: rgba(140, 96, 255, 0.28);
    --app-bg: #000; --app-card: #1c1c1e; --app-text: #fff; --app-text-2: #98989f;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0f0d1d; --paper-2: #17142a; --surface: #1b1830;
  --ink: #f3f0e9; --ink-2: #bdb8cf; --ink-3: #9f9ab3;
  --rule: rgba(243, 240, 233, 0.13);
  --accent: #c3b1ff; --accent-ink: #17142b; --focus: #c3b1ff;
  --glow: rgba(140, 96, 255, 0.28);
  --app-bg: #000; --app-card: #1c1c1e; --app-text: #fff; --app-text-2: #98989f;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 400 17px/1.55 var(--sans); letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased; overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { margin: 0; font-weight: 400; }
h1, h2 { font-family: var(--serif); letter-spacing: -0.015em; line-height: 1.02; text-wrap: balance; }
h1 { font-size: clamp(2.9rem, 1.6rem + 5.6vw, 6.4rem); }
h2 { font-size: clamp(2.2rem, 1.5rem + 3vw, 4rem); }
h3 { font-size: 1.1rem; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0 0 1em; text-wrap: pretty; }
em.i, .serif-i { font-family: var(--serif); font-style: italic; font-weight: 400; }
.g12 { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); }
.c-3 { grid-column: span 3; } .c-4 { grid-column: span 4; } .c-5 { grid-column: span 5; } .c-6 { grid-column: span 6; }
.c-7 { grid-column: span 7; } .c-8 { grid-column: span 8; } .c-9 { grid-column: span 9; } .c-12 { grid-column: 1 / -1; }
.s-5 { grid-column: 5 / -1; } .s-7 { grid-column: 7 / -1; }
@media (max-width: 900px) { .g12 > * { grid-column: 1 / -1; } }
/* Checked list: filled accent circle with a cut-out check, aligned to the first line, wrapped lines hang under the text. */
.checks { list-style: none; margin: 0; padding: 0; }
.checks li { display: grid; grid-template-columns: 20px minmax(0, 1fr); column-gap: 12px; align-items: start; padding: 10px 0; }
.checks li::before {
  content: ""; width: 20px; height: 20px; margin-top: calc((1lh - 20px) / 2); background: var(--accent);
  -webkit-mask: var(--check) center / 100% no-repeat; mask: var(--check) center / 100% no-repeat;
}
:root { --check: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath fill-rule='evenodd' d='M10 0a10 10 0 1 1 0 20a10 10 0 0 1 0-20zM4.6 10.4l1.4-1.4 2.9 2.9 5.1-5.1 1.4 1.4-6.5 6.5z'/%3E%3C/svg%3E"); }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--pad); }
.muted { color: var(--ink-2); }
.fine { font-size: 0.85rem; color: var(--ink-3); }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -60px; background: var(--ink); color: var(--paper); padding: 10px 14px; border-radius: 10px; z-index: 100; }
.skip:focus { top: 12px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 20px; border-radius: 999px; border: 0;
  background: var(--ink); color: var(--paper); font: 600 0.95rem/1 var(--sans);
  text-decoration: none; cursor: pointer; transition: transform .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: none; }
.btn-ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1px var(--rule); }
.btn-small { min-height: 38px; padding: 0 16px; font-size: 0.88rem; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(14px); backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid transparent; transition: border-color .2s;
}
.nav.scrolled { border-bottom-color: var(--rule); }
.nav > .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 600 1.12rem/1 var(--sans); letter-spacing: -0.02em; }
.brand svg { width: 28px; height: 28px; }
.nav-links { display: flex; gap: 26px; margin: 0 0 0 auto; padding: 0; list-style: none; }
.nav-links a { color: var(--ink-2); text-decoration: none; font-size: 0.93rem; }
.nav-links a:hover { color: var(--ink); }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.theme-toggle {
  width: 44px; height: 44px; display: grid; place-items: center; border: 0; border-radius: 999px;
  background: transparent; color: var(--ink-2); cursor: pointer;
}
.theme-toggle:hover { color: var(--ink); background: var(--paper-2); }
.theme-toggle svg { width: 19px; height: 19px; }
@media (max-width: 860px) { .nav-links { display: none; } .nav-actions { margin-left: auto; } }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--rule); padding: 48px 0 56px; margin-top: 40px; font-size: 0.92rem; }
.footer .wrap { display: grid; grid-template-columns: 1fr auto; gap: 28px 40px; align-items: start; }
.footer ul { display: flex; flex-wrap: wrap; gap: 10px 24px; margin: 0; padding: 0; list-style: none; }
.footer ul a { color: var(--ink-2); text-decoration: none; }
.footer ul a:hover { color: var(--ink); text-decoration: underline; }
.footer .legal { grid-column: 1 / -1; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; color: var(--ink-3); font-size: 0.84rem; }
@media (max-width: 640px) { .footer .wrap { grid-template-columns: 1fr; } }

/* ---------- FAQ (home + support) ---------- */
.faq { border-top: 1px solid var(--rule); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; gap: 20px; align-items: baseline;
  padding: 22px 0; font-size: 1.12rem; font-weight: 500; letter-spacing: -0.01em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font: 300 1.6rem/1 var(--sans); color: var(--ink-3); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .answer { padding: 0 0 22px; max-width: 64ch; color: var(--ink-2); }
.faq .answer p:last-child { margin-bottom: 0; }

/* ---------- Legal / support pages ---------- */
.page-hero { padding: clamp(56px, 9vw, 120px) 0 32px; }
.page-hero .wrap { max-width: calc(720px + 2 * var(--pad)); }
.page-hero p { color: var(--ink-2); margin-top: 18px; }
.doc { max-width: 720px; margin: 0 auto; padding: 8px var(--pad) 64px; }
.doc h2 { font-size: clamp(1.7rem, 1.3rem + 1.4vw, 2.3rem); margin: 56px 0 14px; }
.doc h3 { margin: 28px 0 8px; }
.doc ul, .doc ol { padding-left: 1.2em; }
.doc li { margin: 6px 0; }
.doc table { width: 100%; border-collapse: collapse; font-size: 0.95rem; margin: 8px 0 20px; }
.doc th, .doc td { text-align: left; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
.draft-banner { padding: 14px 16px; border-radius: 14px; background: var(--paper-2); font-size: 0.93rem; }
.not-found { min-height: 60vh; display: grid; place-items: center; text-align: center; padding: 80px var(--pad); }
.not-found .num { font: 400 clamp(6rem, 20vw, 12rem)/1 var(--serif); color: var(--accent); }
.not-found .actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}