/* DARG web site. Colours follow the mobile app (mobile/lib/theme.dart); the accent is the one to change once the
   logo arrives. Light is the default, dark follows the system unless the visitor picks one (data-theme). */
:root {
  --bg: #faf8f4;
  --surface: #f1eee7;
  --surface-high: #e7e2d8;
  --border: #dcd6ca;
  --text: #2a2925;
  --muted: #75716a;
  --accent: #c2633c;
  --accent-text: #ffffff;
  --emergency: #d42f35;
  --afad: #2d8a57;
  --web: #2e6dbd;
  --general: #85817a;
  --radius: 14px;
  --max: 1080px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1f1e1c;
    --surface: #2a2927;
    --surface-high: #353431;
    --border: #3e3d39;
    --text: #ece9e2;
    --muted: #a19e96;
    --accent: #d9774f;
    --accent-text: #1f1e1c;
    --emergency: #e5484d;
    --afad: #6fbf8b;
    --web: #6ea8e8;
    --general: #8c8981;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #1f1e1c;
  --surface: #2a2927;
  --surface-high: #353431;
  --border: #3e3d39;
  --text: #ece9e2;
  --muted: #a19e96;
  --accent: #d9774f;
  --accent-text: #1f1e1c;
  --emergency: #e5484d;
  --afad: #6fbf8b;
  --web: #6ea8e8;
  --general: #8c8981;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }
img, svg { display: block; max-width: 100%; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

/* --- emergency strip and header --- */
.alert {
  background: var(--emergency);
  color: #fff;
  text-align: center;
  font-size: 14px;
  padding: 6px 16px;
}
.alert a { color: #fff; font-weight: 700; }

header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; gap: 24px; height: 60px; }
.logo {
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.08em;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo svg { width: 26px; height: 26px; }
.nav ul { list-style: none; display: flex; gap: 20px; margin: 0 0 0 auto; padding: 0; }
.nav ul a { color: var(--muted); text-decoration: none; font-size: 15px; }
.nav ul a:hover { color: var(--text); }
.theme-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  width: 38px;
  height: 38px;
  cursor: pointer;
  font-size: 17px;
  flex: none;
}

/* --- buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: var(--accent-text); }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--surface); }

/* --- sections --- */
section { padding: 88px 0; }
section + section { border-top: 1px solid var(--border); }
.eyebrow {
  color: var(--accent);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 10px;
}
h1, h2, h3 { line-height: 1.2; margin: 0 0 16px; }
h1 { font-size: clamp(34px, 6vw, 56px); letter-spacing: -0.02em; }
h2 { font-size: clamp(26px, 4vw, 38px); letter-spacing: -0.01em; }
h3 { font-size: 19px; }
.lead { font-size: 19px; color: var(--muted); max-width: 640px; }
.muted { color: var(--muted); }

/* --- hero --- */
.hero { padding: 96px 0 88px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero .note { font-size: 14px; color: var(--muted); margin-top: 14px; }

/* the sample answer in the hero: what a DARG answer looks like */
.chat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 20px;
  box-shadow: 0 20px 50px -30px rgba(0, 0, 0, 0.35);
}
.bubble { border-radius: 16px; padding: 12px 16px; font-size: 15px; }
.bubble.q {
  background: var(--accent);
  color: var(--accent-text);
  margin-left: auto;
  max-width: 80%;
  width: fit-content;
  margin-bottom: 14px;
}
.bubble.a { background: var(--bg); border: 1px solid var(--border); }
.bubble.a p { margin: 0 0 8px; }
.bubble.a p:last-child { margin: 0; }
.tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  border-radius: 6px;
  padding: 0 6px;
  margin-left: 4px;
  white-space: nowrap;
}
.tag.afad { color: var(--afad); background: color-mix(in srgb, var(--afad) 14%, transparent); }
.tag.web { color: var(--web); background: color-mix(in srgb, var(--web) 14%, transparent); }
.tag.gen { color: var(--general); background: color-mix(in srgb, var(--general) 16%, transparent); }
.tag.sos { color: var(--emergency); background: color-mix(in srgb, var(--emergency) 14%, transparent); }

/* --- how it works --- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 40px; counter-reset: step; }
.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  position: relative;
}
.step::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 14px;
}
.step p { margin: 0; color: var(--muted); font-size: 15px; }
.legend { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 28px; font-size: 15px; color: var(--muted); }

/* --- features --- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.card .icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent);
  margin-bottom: 14px;
}
.card .icon svg { width: 22px; height: 22px; }
.card.sos .icon { background: color-mix(in srgb, var(--emergency) 15%, transparent); color: var(--emergency); }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

/* --- download --- */
.download {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 36px;
  margin-top: 40px;
}
.download ol { margin: 12px 0 0; padding-left: 20px; color: var(--muted); font-size: 15px; }
.download code {
  background: var(--surface-high);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 14px;
}

/* --- results --- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 40px; }
.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.stat b { display: block; font-size: 36px; line-height: 1.1; letter-spacing: -0.02em; margin-bottom: 6px; }
.stat span { color: var(--muted); font-size: 14px; }
.fine { font-size: 14px; color: var(--muted); margin-top: 20px; max-width: 760px; }

/* --- institutions and about --- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.checks { list-style: none; padding: 0; margin: 20px 0 0; }
.checks li { padding-left: 28px; position: relative; margin-bottom: 10px; }
.checks li::before { content: "✓"; position: absolute; left: 0; color: var(--afad); font-weight: 700; }
.people { display: grid; gap: 12px; }
.person {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.person b { display: block; }
.person span { color: var(--muted); font-size: 15px; }
.links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.links a { font-size: 14px; padding: 8px 14px; }
.links svg { width: 16px; height: 16px; }

/* --- footer --- */
footer { border-top: 1px solid var(--border); padding: 36px 0 48px; font-size: 14px; color: var(--muted); }
footer .row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }
footer p { margin: 0 0 6px; }

/* --- small screens --- */
@media (max-width: 900px) {
  .hero-grid, .split, .download { grid-template-columns: 1fr; }
  .steps, .stats { grid-template-columns: repeat(2, 1fr); }
  .cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .nav ul { display: none; }
  .theme-btn { margin-left: auto; }
  section { padding: 64px 0; }
  .hero { padding: 56px 0 64px; }
  .steps, .cards { grid-template-columns: 1fr; }
  .download { padding: 24px; }
}