/* Picker web pages ("Precision Pop"): same tokens as the app theme (ui/theme/Color.kt). Dark is the default. */
@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("fonts/plus-jakarta-sans.woff2") format("woff2");
  font-weight: 500 800;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("fonts/inter.woff2") format("woff2");
  font-weight: 400 700;
  font-display: swap;
}

:root {
  /* Palette (Tailwind Slate + Emerald + Rose, like Palette in Color.kt) */
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --mint-100: #d1fae5;
  --mint-500: #10b981;
  --mint-700: #047857;
  --mint-900: #064e3b;
  --coral-500: #f43f5e;
  --coral-700: #be123c;
  --red-100: #fee2e2;
  --red-400: #f87171;
  --red-600: #dc2626;
  --red-900: #7f1d1d;
  --white: #ffffff;

  /* Roles (dark scheme) */
  --bg: var(--slate-900);
  --surface: var(--slate-800);
  --text: var(--white);
  --text-muted: var(--slate-400);
  --outline: var(--slate-700);
  --primary: var(--mint-500);
  --on-primary: var(--slate-900);   /* "ink on neon" */
  --secondary: var(--coral-500);
  --on-secondary: var(--slate-900);
  --ink: var(--slate-900);
  --error: var(--red-400);
  --error-container: var(--red-900);
  --on-error-container: var(--red-100);
  --focus: var(--mint-500);
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: var(--slate-50);
    --surface: var(--white);
    --text: var(--slate-900);
    --text-muted: var(--slate-600);
    --outline: var(--slate-200);
    --primary: var(--mint-700);
    --on-primary: var(--white);
    --secondary: var(--coral-700);
    --on-secondary: var(--white);
    --error: var(--red-600);
    --error-container: var(--red-100);
    --on-error-container: var(--red-900);
    --focus: var(--mint-700);
    color-scheme: light;
  }
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 440px;
  margin: 0 auto;
  padding: 40px 16px 48px;
}

/* Wordmark: the mark plus "Picker" in Plus Jakarta Sans. */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
  margin-bottom: 28px;
}
.brand .mark { width: 30px; height: 30px; }

/* The Circuit mark: two traces (A mint, B coral) meet in one junction and leave as one arrow. */
.mark { display: block; overflow: visible; }
.mark .glow { opacity: 1; }
.mark-lg { width: 96px; height: 96px; margin: 8px 0 20px; }
.mark-lg .glow { animation: glow 2.4s ease-in-out infinite; }
.mark .check { opacity: 0; transform: scale(.4); transform-origin: 12px 56px; transition: opacity .2s, transform .2s cubic-bezier(.2, .9, .3, 1.2); }
.mark[data-state="done"] .check { opacity: 1; transform: none; }
.mark[data-state="invalid"] .trace, .mark[data-state="invalid"] .glow { filter: grayscale(1); opacity: .45; animation: none; }
@keyframes glow { 0%, 100% { opacity: .55; } 50% { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  .mark-lg .glow { animation: none; }
  .mark .check { transition: none; }
}

h1 {
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  font-weight: 800;
  font-size: 30px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

p { margin: 0 0 16px; color: var(--text-muted); }
p strong { color: var(--text); }

.card {
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: 16px;
  padding: 20px;
}

form { margin-top: 24px; display: grid; gap: 16px; }

.field label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin: 0 0 6px 4px;
}
.input-wrap { position: relative; }
.field input {
  width: 100%;
  font: inherit;
  font-size: 17px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: 12px;
  padding: 15px 56px 15px 16px;
  outline: none;
}
.field input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 25%, transparent); }
.field.invalid input { border-color: var(--error); }
.field .hint { font-size: 13px; margin: 6px 0 0 16px; color: var(--text-muted); }
.field.invalid .hint { color: var(--error); }

.toggle {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  display: grid;
  place-items: center;
}
.toggle:focus-visible { outline: 2px solid var(--focus); }
.toggle svg { width: 22px; height: 22px; }

.button {
  appearance: none;
  border: 0;
  width: 100%;
  min-height: 56px;
  border-radius: 12px;
  background: var(--primary);
  color: var(--on-primary);
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  font-weight: 700;
  font-size: 17px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
  transition: transform .12s, filter .12s;
}
.button:hover { filter: brightness(1.08); }
.button:active { transform: scale(.97); }
.button:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.button[disabled] { opacity: .7; cursor: progress; }
@media (prefers-reduced-motion: reduce) { .button { transition: none; } .button:active { transform: none; } }
.spinner {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2.5px solid currentColor; border-right-color: transparent;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.alert {
  border-radius: 12px;
  padding: 12px 16px;
  background: var(--error-container);
  color: var(--on-error-container);
  font-size: 15px;
}

.steps {
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: 16px;
  padding: 16px 20px 16px 40px;
  margin: 8px 0 0;
}
.steps li { margin: 4px 0; }

.footer { margin-top: 40px; font-size: 13px; color: var(--text-muted); }
.footer a, .legal a { color: var(--primary); }

/* Landing page (index.html, 404.html) */
.hero { text-align: left; }
.tagline {
  font-family: "Plus Jakarta Sans", system-ui, sans-serif;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--primary);
  margin: 0 0 6px;
}
.motto { font-size: 19px; color: var(--text); margin: 0 0 24px; }

/* A/B example: option badges (never color alone) and a tug bar with tabular numbers. */
.demo { margin: 8px 0 28px; display: grid; gap: 12px; }
.demo-question { font-weight: 600; color: var(--text); margin: 0; }
.option { display: flex; align-items: center; gap: 12px; }
.badge {
  width: 28px; height: 28px; border-radius: 8px;
  display: grid; place-items: center;
  font-family: "Plus Jakarta Sans", system-ui, sans-serif; font-weight: 800; font-size: 14px;
  color: var(--ink);
}
.badge-a { background: var(--mint-500); }
.badge-b { background: var(--coral-500); }
.option-label { flex: 1; }
.pct { font-variant-numeric: tabular-nums; font-weight: 700; }
.tug { display: flex; height: 14px; border-radius: 999px; overflow: hidden; gap: 2px; }
.tug-a { background: var(--mint-500); flex: 62; }
.tug-b { background: var(--coral-500); flex: 38; }

/* Legal texts (privacy/, terms/): long reading pages, generated by scripts/generate_legal_web.py. */
main.legal { max-width: 720px; }
.legal .brand { margin-bottom: 12px; }
.lang-switch { margin-bottom: 24px; font-size: 15px; }
.legal article + article { margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--outline); }
.legal h2 { font-family: "Plus Jakarta Sans", system-ui, sans-serif; font-weight: 700; font-size: 21px; color: var(--text); margin: 32px 0 8px; }
.legal h3 { font-size: 17px; margin: 20px 0 6px; }
.legal ul { margin: 0 0 16px; padding-left: 22px; color: var(--text-muted); }
.legal li { margin: 4px 0; }
.legal :target { scroll-margin-top: 16px; }

[hidden] { display: none !important; }

/* Headings focused by script (screen readers announce the new view) need no focus ring. */
h1[tabindex="-1"]:focus { outline: none; }
.legal a.brand { color: var(--text); text-decoration: none; }