/* ============================================================
   AI Coach — orange / white / blue design system
   Global stylesheet. Light is the default theme.
   ============================================================ */

/* ---------- Color tokens ---------- */
:root {
  color-scheme: light;
  --bg: #FBFBF9;
  --bg-t: rgba(251, 251, 249, 0.85);
  --surface: #FFFFFF;
  --ink: #12263F;
  --muted: #5B6B7F;
  --line: #E4E9F0;

  --accent: #FF5A1F;
  --accent-ink: #D14600;
  --accent-soft: rgba(255, 90, 31, 0.10);
  --on-accent: #FFFFFF;

  --blue: #1D5FBF;
  --blue-ink: #174A94;
  --blue-soft: rgba(29, 95, 191, 0.10);
  --on-blue: #FFFFFF;

  --link: var(--blue-ink);
  --link-hover: var(--ink);

  /* Type */
  --font-display: 'Sora', sans-serif;
  --font-body: 'Inter Tight', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Layout */
  --content-max: 900px;
  --page-max: 1240px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0A1626;
  --bg-t: rgba(10, 22, 38, 0.82);
  --surface: #111F33;
  --ink: #F4F7FB;
  --muted: #93A5BC;
  --line: #20334D;

  --accent: #FF6B2C;
  --accent-ink: #FF824D;
  --accent-soft: rgba(255, 107, 44, 0.14);
  --on-accent: #1A0A02;

  --blue: #5B9BFF;
  --blue-ink: #7FB2FF;
  --blue-soft: rgba(91, 155, 255, 0.14);
  --on-blue: #04101F;

  --link: var(--blue-ink);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --bg: #0A1626; --bg-t: rgba(10, 22, 38, 0.82); --surface: #111F33;
    --ink: #F4F7FB; --muted: #93A5BC; --line: #20334D;
    --accent: #FF6B2C; --accent-ink: #FF824D; --accent-soft: rgba(255, 107, 44, 0.14); --on-accent: #1A0A02;
    --blue: #5B9BFF; --blue-ink: #7FB2FF; --blue-soft: rgba(91, 155, 255, 0.14); --on-blue: #04101F;
    --link: var(--blue-ink);
  }
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  transition: background .25s, color .25s;
}
a { color: var(--link); }
a:hover { color: var(--link-hover); }
button { font-family: inherit; }

@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

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

/* ---------- Beta banner + nav ---------- */
.betabar {
  background: var(--accent); color: var(--on-accent);
  font-weight: 600; font-size: 12.5px; letter-spacing: .08em; text-transform: uppercase;
  text-align: center; padding: 9px 16px;
}
.sitehead {
  position: sticky; top: 0; z-index: 50;
  background: var(--bg-t); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.sitehead-in {
  max-width: var(--page-max); margin: 0 auto; padding: 13px 24px;
  display: flex; align-items: center; gap: 18px;
}
.brand {
  font-family: var(--font-display); font-weight: 800; font-size: 17px;
  color: var(--ink); text-decoration: none; letter-spacing: -.02em; white-space: nowrap;
}
.brand:hover { color: var(--ink); }
.brand .dot { color: var(--accent-ink); }
.stepnav { display: flex; gap: 6px; overflow-x: auto; flex: 1; scrollbar-width: none; }
.stepnav::-webkit-scrollbar { display: none; }
.stepnav a {
  display: flex; align-items: center; gap: 7px; padding: 7px 12px; border-radius: 999px;
  text-decoration: none; white-space: nowrap; font-weight: 600; font-size: 13px;
  transition: color .15s, border-color .15s;
  color: var(--muted); background: transparent; border: 1px solid transparent;
}
.stepnav a .n { font-family: var(--font-display); font-weight: 700; font-size: 11px; color: var(--muted); }
.stepnav a:hover { color: var(--ink); border-color: var(--accent-ink); }
.stepnav a.cur { color: var(--ink); background: var(--surface); border-color: var(--accent-ink); }
.stepnav a.cur .n, .stepnav a.done .n { color: var(--accent-ink); }
.dashlink {
  padding: 8px 16px; border-radius: 999px; background: var(--ink); color: var(--bg);
  font-weight: 700; font-size: 13px; text-decoration: none; white-space: nowrap; transition: background .15s;
}
.dashlink:hover { background: var(--accent-ink); color: var(--on-accent); }
.themebtn {
  width: 34px; height: 34px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--surface); color: var(--ink); cursor: pointer; font-size: 15px; line-height: 1; flex: none;
}
.themebtn:hover { border-color: var(--accent-ink); }

/* ---------- Hover utility classes (replace style-hover) ---------- */
.hv-card { transition: transform .18s, border-color .18s; }
.hv-card:hover { transform: translateY(-4px); border-color: var(--accent-ink); }
.hv-btn { transition: transform .15s; }
.hv-btn:hover { transform: translateY(-2px); color: var(--on-accent); }
.hv-next { transition: transform .18s; }
.hv-next:hover { transform: translateY(-3px); color: var(--on-accent); }
.hv-outline { transition: border-color .15s; }
.hv-outline:hover { border-color: var(--accent-ink); color: var(--ink); }
.hv-line:hover { border-color: var(--accent-ink); }
.hv-ink:hover { color: var(--ink); }

/* ---------- Responsive grids ---------- */
.g3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.g2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.cols-est { grid-template-columns: 180px 1fr 1fr; }
.cols-syn { grid-template-columns: 150px 200px 1fr; }

@media (max-width: 900px) {
  .g3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .g3, .g2 { grid-template-columns: 1fr; }
  .cols-est, .cols-syn { grid-template-columns: 1fr !important; row-gap: 6px !important; }
  .cols-est > *, .cols-syn > * { padding-right: 0 !important; }
  .thead { display: none !important; }
}

/* ---------- Copy buttons ---------- */
.copybtn {
  padding: 8px 16px; border-radius: 999px; border: none; cursor: pointer;
  font-weight: 700; font-size: 13px; transition: background .15s;
  background: var(--ink); color: var(--bg);
}
.copybtn.done { background: var(--accent); color: var(--on-accent); }

/* ---------- Footer ---------- */
.sitefoot {
  max-width: var(--page-max); margin: 0 auto; padding: 32px 24px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.sitefoot p { margin: 0; font-size: 13px; color: var(--muted); }