:root {
  --ink: #172033;
  --muted: #647089;
  --surface: #ffffff;
  --soft: #f4f6fb;
  --line: #dfe4ef;
  --accent: #5b3df5;
  --accent-dark: #4026c9;
  --success: #16845b;
  --shadow: 0 18px 50px rgba(31, 40, 70, .12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--surface);
}
button, input, select { font: inherit; }
a { color: inherit; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px clamp(20px, 6vw, 84px);
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.brand { font-size: 1.25rem; font-weight: 800; text-decoration: none; }
nav { display: flex; gap: 22px; }
nav a { color: var(--muted); text-decoration: none; font-weight: 650; }
.hero {
  min-height: 54vh;
  padding: 54px clamp(20px, 8vw, 120px);
  display: grid;
  grid-template-columns: 1.4fr .6fr;
  gap: 56px;
  align-items: center;
  background: radial-gradient(circle at 85% 10%, #e4ddff 0, transparent 32%), var(--soft);
}
.hero h1 { max-width: 760px; margin: 12px 0 16px; font-size: clamp(2.35rem, 4.8vw, 4.15rem); line-height: 1.02; }
.hero p { max-width: 720px; color: var(--muted); font-size: 1.08rem; line-height: 1.65; }
.eyebrow { color: var(--accent); font-size: .78rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.hero-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px 16px;
  padding: 34px;
  background: var(--surface);
  border-radius: 28px;
  box-shadow: var(--shadow);
}
.hero-card strong { font-size: 2.2rem; color: var(--accent); }
.hero-card span { align-self: center; color: var(--muted); }
.section { padding: 84px clamp(20px, 8vw, 120px); }
.section.alt { background: var(--soft); }
.section-heading { max-width: 760px; margin-bottom: 34px; }
.section-heading h2 { margin: 8px 0; font-size: clamp(2rem, 4vw, 3.4rem); }
.section-heading p { color: var(--muted); font-size: 1.05rem; }
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 46px;
  padding: 0 20px;
  border: 0;
  border-radius: 13px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}
.button:disabled { opacity: .5; cursor: not-allowed; }
.primary { color: white; background: var(--accent); }
.primary:hover { background: var(--accent-dark); }
.secondary { color: var(--ink); background: white; border: 1px solid var(--line); }
.test-card, .results, .search-box, .filters, .search-results {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
}
.test-card { max-width: 1000px; padding: clamp(24px, 5vw, 40px); }
.progress-row { display: grid; gap: 8px; color: var(--muted); font-size: .92rem; font-weight: 750; }
.progress { height: 9px; overflow: hidden; border-radius: 999px; background: #e9ecf4; }
#progress-bar { height: 100%; width: 0; background: var(--accent); transition: width .25s ease; }
#question-text { min-height: 0; margin: 24px 0 18px; font-size: clamp(1.05rem, 2vw, 1.35rem); line-height: 1.4; }
.answers { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; }
.answer {
  display: grid;
  grid-template-rows: auto auto;
  justify-items: center;
  gap: 8px;
  min-height: 92px;
  padding: 13px 8px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--ink);
  font-size: .88rem;
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
  cursor: pointer;
}
.answer input { width: 18px; min-height: 18px; margin: 0; accent-color: var(--accent); }
.answer:has(input:checked) { border-color: var(--accent); background: #f1efff; }
.test-actions { display: flex; justify-content: space-between; margin-top: 26px; }
.hidden { display: none !important; }
.results { max-width: 1100px; margin-top: 32px; padding: clamp(22px, 4vw, 40px); }
.results-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.results-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.result-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 26px 0; }
.result-grid.con-bloqueo { grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr); align-items: stretch; }
.premium-bundle { display: grid; gap: 16px; padding: 18px; border: 2px solid #8068f7; border-radius: 22px; background: #f7f5ff; }
.premium-bundle-heading { display: grid; gap: 5px; text-align: center; }
.premium-bundle-heading span { color: var(--accent); font-size: .78rem; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.premium-bundle-heading strong { font-size: 1.12rem; }
.premium-bundle-heading b { color: var(--success); font-size: 1rem; }
.premium-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.premium-bundle .result-card { min-height: 300px; background: var(--surface); }
.premium-cta { width: 100%; text-align: center; }
.premium-bundle small { color: var(--muted); font-weight: 650; text-align: center; }
.result-card { position: relative; min-height: 360px; padding: 24px; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; }
.result-card h4 { margin: 5px 0; font-size: 1.45rem; }
.result-card p { color: var(--muted); line-height: 1.55; }
.result-card ol { padding-left: 22px; }
.lock-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 10px;
  text-align: center;
  padding: 24px;
  color: var(--ink);
  background: rgba(247,248,252,.93);
  backdrop-filter: blur(8px);
}
.lock-icon { font-size: 2.2rem; }
.payment-box { display: flex; justify-content: space-between; gap: 24px; align-items: center; padding: 24px; border-radius: 18px; background: #f1efff; }
.payment-box h3 { margin-top: 0; }
.payment-box p { margin: 8px 0; color: var(--muted); line-height: 1.55; }
.payment-box .payment-note { color: var(--ink); font-size: .92rem; }
.payment-info { flex: 1; }
.payment-form { display: grid; grid-template-columns: repeat(3, minmax(140px, 1fr)); gap: 12px; margin-top: 18px; }
.payment-form label span { font-weight: 500; }
.payment-data-note { font-size: .84rem; }
.payment-actions { display: grid; gap: 10px; min-width: 230px; text-align: center; }
.payment-actions .text-button { font-size: .86rem; }
.qr-payment-status { display: grid; justify-items: center; gap: 8px; margin-top: 6px; padding: 16px; border-radius: 14px; background: #fff; color: var(--ink); box-shadow: 0 8px 24px rgba(36, 25, 74, .1); }
.qr-payment-status.hidden { display: none; }
.qr-payment-status span { font-size: .84rem; color: var(--muted); }
.payment-spinner { width: 28px; height: 28px; border: 3px solid #ddd7ff; border-top-color: #6542d5; border-radius: 50%; animation: payment-spin .8s linear infinite; }
@keyframes payment-spin { to { transform: rotate(360deg); } }
.recovery-section { padding-top: 0; }
.recovery-form { display: grid; grid-template-columns: repeat(3, minmax(150px, 1fr)) auto; gap: 14px; align-items: end; max-width: 1040px; margin: 0 auto; padding: 22px; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
.search-box {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding: 24px;
}
.search-box .wide { grid-column: span 2; }
label { display: grid; gap: 7px; color: var(--muted); font-size: .92rem; font-weight: 650; }
input, select {
  width: 100%;
  min-height: 46px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  background: white;
}
input:focus, select:focus { outline: 3px solid rgba(91,61,245,.15); border-color: var(--accent); }
.search-layout { display: grid; grid-template-columns: 270px 1fr; gap: 22px; margin-top: 24px; align-items: start; }
.filters { position: sticky; top: 92px; display: grid; gap: 14px; padding: 22px; }
.filters h3 { margin: 0 0 4px; }
.text-button { border: 0; background: none; color: var(--accent); cursor: pointer; font-weight: 750; }
.search-results { min-height: 360px; padding: 22px; }
.results-count { margin-bottom: 14px; color: var(--muted); }
.institution-list { display: grid; gap: 14px; }
.institution-card { padding: 22px; border: 1px solid var(--line); border-radius: 16px; }
.institution-card h3 { margin: 0 0 8px; }
.institution-card p { margin: 6px 0; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 7px; margin: 12px 0; }
.chip { padding: 6px 10px; border-radius: 999px; background: #f1efff; color: var(--accent-dark); font-size: .82rem; font-weight: 750; }
.links { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 13px; }
.links a { color: var(--accent); font-weight: 750; }
.pagination { display: flex; justify-content: center; gap: 10px; margin-top: 22px; }
footer { display: flex; justify-content: space-between; gap: 18px; padding: 30px clamp(20px, 8vw, 120px); color: var(--muted); border-top: 1px solid var(--line); }

@media (max-width: 900px) {
  nav { display: none; }
  .hero, .result-grid, .search-layout { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .search-box { grid-template-columns: 1fr; }
  .search-box .wide { grid-column: auto; }
  .filters { position: static; }
  .payment-box, .results-header, footer { align-items: stretch; flex-direction: column; }
  .results-actions { flex-direction: column; }
  .payment-form { grid-template-columns: 1fr; }
  .recovery-form { grid-template-columns: 1fr; }
  .result-grid.con-bloqueo, .premium-cards { grid-template-columns: 1fr; }
  /* En móvil las cinco respuestas se muestran como lista, sin desplazamiento horizontal. */
  .answers { grid-template-columns: 1fr; overflow: visible; padding: 0; }
  .answer {
    grid-template-columns: 22px 1fr;
    grid-template-rows: none;
    justify-items: start;
    align-items: center;
    min-height: 52px;
    padding: 12px 14px;
    text-align: left;
  }
}