:root {
  --bg: #f4f6fb;
  --card: #ffffff;
  --ink: #111827;
  --muted: #5b6475;
  --line: #e2e6ef;
  --brand: #0f5fd7;
  --brand-ink: #ffffff;
  --safe: #0f7b48;
  --safe-bg: #e6f6ee;
  --mod: #9a5b00;
  --mod-bg: #fff4dc;
  --reach: #b42318;
  --reach-bg: #fdecea;
  --err: #c0262d;
  --wa: #1f9d55;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1117;
    --card: #161b22;
    --ink: #e6edf3;
    --muted: #9aa4b2;
    --line: #2a313c;
    --brand: #4d8ff5;
    --safe: #4cc38a;
    --safe-bg: #12291e;
    --mod: #f0b44c;
    --mod-bg: #2d2412;
    --reach: #f2766b;
    --reach-bg: #331a18;
    --err: #ff7b72;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
}
.wrap { max-width: 560px; margin: 0 auto; padding: 0 16px; }
[hidden] { display: none !important; }

.top { background: var(--brand); color: var(--brand-ink); }
.top-inner { display: flex; align-items: center; gap: 8px; height: 52px; font-weight: 700; }
.brand small { font-weight: 500; opacity: .8; margin-left: 4px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 16px;
  margin: 16px 0;
}
h1 { font-size: 1.45rem; line-height: 1.25; margin: 0 0 6px; }
h2 { font-size: 1.25rem; margin: 16px 0 4px; }
h3 { font-size: 1.1rem; margin: 0 0 6px; }
.sub { color: var(--muted); margin: 0 0 16px; font-size: .95rem; }

label, .label { display: block; font-weight: 600; font-size: .95rem; margin: 14px 0 6px; }
.hint { color: var(--muted); font-weight: 400; }
input[type="number"], input[type="text"], input[type="tel"], select {
  width: 100%;
  font-size: 1.05rem;            /* >=16px avoids iOS zoom */
  padding: 13px 12px;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  color: var(--ink);
  appearance: none;
}
select { background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 18px) 55%, calc(100% - 13px) 55%; background-size: 5px 5px; background-repeat: no-repeat; }
input:focus, select:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 20%, transparent); }
input.bad, select.bad { border-color: var(--err); }
.err { color: var(--err); font-size: .85rem; margin: 4px 0 0; min-height: 0; }
.err:empty { display: none; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips label { margin: 0; font-weight: 500; }
.chips input { position: absolute; opacity: 0; pointer-events: none; }
.chips span {
  display: inline-block; padding: 10px 14px; border: 1.5px solid var(--line);
  border-radius: 999px; cursor: pointer; user-select: none; min-width: 64px; text-align: center;
}
.chips input:checked + span { border-color: var(--brand); background: color-mix(in srgb, var(--brand) 12%, transparent); color: var(--brand); font-weight: 700; }
.chips input:focus-visible + span { box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 30%, transparent); }

.phone { display: flex; }
.cc { display: flex; align-items: center; padding: 0 12px; border: 1.5px solid var(--line); border-right: 0; border-radius: 10px 0 0 10px; color: var(--muted); font-weight: 600; }
.phone input { border-radius: 0 10px 10px 0; }
.consent { color: var(--muted); font-size: .8rem; margin: 8px 0 0; }

.btn {
  display: block; width: 100%; margin-top: 18px; padding: 15px 16px; font-size: 1.05rem; font-weight: 700;
  border-radius: 12px; border: 0; cursor: pointer; text-align: center;
}
.btn.primary { background: var(--brand); color: var(--brand-ink); }
.btn.primary:disabled { opacity: .6; cursor: progress; }
.btn.whatsapp { background: var(--wa); color: #fff; }
.btn.ghost { background: transparent; color: var(--brand); border: 1.5px solid var(--line); margin-bottom: 8px; }
.back { background: none; border: 0; color: var(--brand); font-size: .95rem; padding: 0; cursor: pointer; }

.trust { list-style: none; padding: 0; margin: 16px 0 0; display: flex; flex-wrap: wrap; gap: 6px 14px; color: var(--muted); font-size: .85rem; }

.teaser { margin-top: 12px; padding: 16px; border-radius: 12px; background: color-mix(in srgb, var(--brand) 9%, var(--card)); text-align: center; }
.teaser-label { color: var(--muted); font-size: .85rem; }
.teaser-air { font-size: 2rem; font-weight: 800; color: var(--brand); }
.teaser-match { font-weight: 600; }

.summary .sum-row { display: grid; grid-template-columns: repeat(3, 1fr); text-align: center; gap: 8px; }
.k { color: var(--muted); font-size: .8rem; }
.v { font-weight: 800; font-size: 1.15rem; }
.counts { display: flex; gap: 8px; margin-top: 14px; }
.counts a { flex: 1; text-align: center; padding: 8px 4px; border-radius: 10px; font-weight: 700; text-decoration: none; font-size: .9rem; }
.c-safe { background: var(--safe-bg); color: var(--safe); }
.c-moderate { background: var(--mod-bg); color: var(--mod); }
.c-reach { background: var(--reach-bg); color: var(--reach); }

.bucket h2 { display: flex; align-items: center; gap: 8px; margin-top: 24px; }
.bucket .tag { font-size: .75rem; font-weight: 700; padding: 3px 8px; border-radius: 999px; }
.bucket .why { color: var(--muted); font-size: .85rem; margin: 2px 0 8px; }
.college { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--line); border-radius: 12px; padding: 12px 14px; margin: 8px 0; }
.bucket.safe .college { border-left-color: var(--safe); }
.bucket.moderate .college { border-left-color: var(--mod); }
.bucket.reach .college { border-left-color: var(--reach); }
.college .name { font-weight: 700; }
.college .meta { color: var(--muted); font-size: .85rem; margin-top: 2px; }
.college .row { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; font-size: .9rem; gap: 8px; flex-wrap: wrap; }
.badge { display: inline-block; font-size: .72rem; font-weight: 700; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); }
.badge.home { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.empty { text-align: left; }
.empty ul { padding-left: 18px; margin: 8px 0 0; }

.cta { border: 2px solid var(--brand); }
.cta p { color: var(--muted); margin: 0; }
.cta-done { color: var(--safe) !important; font-weight: 700; margin-top: 12px !important; }

.disclaimer { color: var(--muted); font-size: .78rem; margin: 16px 0 24px; }
.foot { color: var(--muted); font-size: .78rem; text-align: center; padding-bottom: 24px; }
.phone-hint { color: var(--muted); font-size: .8rem; margin: 4px 0 0; text-align: right; }
.phone-hint.done { color: var(--safe); }
.phone-hint.done::before { content: "✓ "; }