/* =====================================================================
   Mundoceys · Recomendador de producto
   Brand: Ceys blue (#0033a1) background + Ceys yellow (#ffda00) accent
   Type: Poppins (display) + Open Sans (body)
   ===================================================================== */

:root {
  /* Brand */
  --color-brand: #0033A1;            /* Ceys blue */
  --color-brand-deep: #002375;       /* darker blue for sticky/topbar/footer-on-blue */
  --color-brand-soft: #E6ECF6;       /* soft blue tint on white card */
  --color-brand-tint: #F4F6FB;

  --color-accent: #FFDA00;           /* Ceys yellow */
  --color-accent-strong: #E5C400;    /* hover/active */
  --color-accent-soft: #FFF7CC;      /* soft yellow on white */
  --color-accent-tint: #FFFCE5;

  /* Surfaces */
  --color-bg: var(--color-brand);    /* whole page is Ceys blue */
  --color-surface: #FFFFFF;          /* form card, opt boxes */
  --color-surface-alt: #F5F7FB;      /* subtle alt on white */

  /* Ink (on white card) */
  --color-ink-900: #0A1530;
  --color-ink-700: #1F2A4A;
  --color-ink-500: #51597A;
  --color-ink-400: #7B82A0;
  --color-ink-300: #B5BACE;
  --color-line: #E5E8F0;
  --color-line-strong: #C6CCDC;

  /* Type */
  --font-display: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing rhythm (4 / 8 px) */
  --s-1: 4px;  --s-2: 8px;  --s-3: 12px; --s-4: 16px;
  --s-5: 24px; --s-6: 32px; --s-7: 48px; --s-8: 64px;

  /* Radius */
  --r-sm: 8px; --r-md: 12px; --r-lg: 16px; --r-xl: 24px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(0, 14, 51, 0.08);
  --shadow-md: 0 10px 30px rgba(0, 14, 51, 0.18), 0 2px 6px rgba(0, 14, 51, 0.08);
  --shadow-focus: 0 0 0 3px rgba(255, 218, 0, 0.55);
}

/* =========================== Reset & base ============================ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--color-ink-900);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }
fieldset { border: 0; padding: 0; margin: 0; }
legend { padding: 0; }
:focus-visible { outline: none; box-shadow: var(--shadow-focus); border-radius: var(--r-sm); }

.skip-link {
  position: absolute; left: -9999px;
  background: #fff; color: var(--color-brand);
  padding: var(--s-2) var(--s-4); border-radius: var(--r-sm);
  font-weight: 600;
}
.skip-link:focus { left: var(--s-4); top: var(--s-4); z-index: 1000; }

.container {
  width: 100%;
  max-width: 880px;
  margin-inline: auto;
  padding-inline: var(--s-5);
}

/* ============================== Topbar ============================== */
.topbar {
  background: var(--color-brand-deep);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  position: sticky; top: 0; z-index: 10;
  color: #fff;
}
.topbar__inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: var(--s-3);
  gap: var(--s-4);
}
.brand {
  display: inline-flex; align-items: center;
  text-decoration: none;
}
.brand__logo {
  height: 40px; width: auto; display: block;
}
.topbar__tag {
  font-size: 12px; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--color-brand-deep);
  background: var(--color-accent);
  padding: var(--s-1) var(--s-3);
  border-radius: 999px;
}
@media (max-width: 480px) {
  .topbar__tag { display: none; }
  .brand__logo { height: 36px; }
}

/* ================================ Hero =============================== */
.main { padding-block: var(--s-7) var(--s-8); color: #fff; }
.hero { text-align: center; margin-bottom: var(--s-6); color: #fff; }
.eyebrow {
  display: inline-block;
  font-size: 12px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-brand-deep);
  background: var(--color-accent);
  padding: 6px var(--s-3);
  border-radius: 999px;
  margin: 0 0 var(--s-3);
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw + 8px, 44px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 var(--s-3);
  color: #fff;
}
.hero__lead {
  font-size: 17px;
  color: rgba(255,255,255,0.86);
  max-width: 56ch;
  margin: 0 auto;
}

/* ================================ Card =============================== */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-md);
  padding: var(--s-6);
  color: var(--color-ink-900);
}
@media (max-width: 600px) {
  .card { padding: var(--s-5) var(--s-4); border-radius: var(--r-lg); }
}

/* ================================ Form =============================== */
.qlist { list-style: none; padding: 0; margin: 0; }
.q { padding: var(--s-5) 0; border-top: 1px solid var(--color-line); }
.q:first-child { padding-top: 0; border-top: 0; }
.q__legend {
  display: flex; align-items: center; gap: var(--s-3);
  font-family: var(--font-display);
  font-size: 18px; font-weight: 600;
  color: var(--color-ink-900);
  margin-bottom: var(--s-2);
}
.q__step {
  display: grid; place-items: center;
  width: 28px; height: 28px;
  background: var(--color-accent);
  color: var(--color-brand-deep);
  font-family: var(--font-display);
  font-size: 13px; font-weight: 700;
  border-radius: 999px;
  flex-shrink: 0;
}
.q__title { line-height: 1.3; }
.q__hint {
  margin: 0 0 var(--s-4) 40px;
  color: var(--color-ink-500);
  font-size: 14px;
}
@media (max-width: 480px) {
  .q__hint { margin-left: 0; }
}

/* ============================== Options ============================== */
.opts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--s-3);
}
.opt { position: relative; cursor: pointer; }
.opt input {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  opacity: 0; cursor: pointer; margin: 0;
}
.opt__box {
  display: block;
  padding: var(--s-4);
  background: var(--color-surface);
  border: 1.5px solid var(--color-line);
  border-radius: var(--r-md);
  transition: border-color 180ms ease, background-color 180ms ease, box-shadow 180ms ease, transform 120ms ease;
  min-height: 44px;
}
.opt__title {
  display: block;
  font-weight: 600;
  font-size: 15px;
  color: var(--color-ink-900);
  margin-bottom: 2px;
}
.opt__desc {
  display: block;
  font-size: 13px;
  color: var(--color-ink-500);
  line-height: 1.45;
}
.opt:hover .opt__box {
  border-color: var(--color-line-strong);
  background: var(--color-brand-tint);
}
.opt input:focus-visible + .opt__box {
  border-color: var(--color-brand);
  box-shadow: var(--shadow-focus);
}
.opt input:checked + .opt__box {
  border-color: var(--color-brand);
  background: var(--color-brand-soft);
  box-shadow: inset 0 0 0 1px var(--color-brand);
}
.opt input:checked + .opt__box .opt__title {
  color: var(--color-brand);
}

/* =========================== Numeric input =========================== */
.q--num { padding-bottom: 0; }
.num {
  position: relative;
  margin-left: 40px;
  max-width: 240px;
}
@media (max-width: 480px) {
  .num { margin-left: 0; }
}
.num input {
  width: 100%;
  font: inherit; font-size: 16px;
  padding: var(--s-3) 56px var(--s-3) var(--s-4);
  background: var(--color-surface);
  border: 1.5px solid var(--color-line);
  border-radius: var(--r-md);
  color: var(--color-ink-900);
  transition: border-color 180ms ease, box-shadow 180ms ease;
  min-height: 48px;
}
.num input::placeholder { color: var(--color-ink-300); }
.num input:hover { border-color: var(--color-line-strong); }
.num input:focus { outline: none; border-color: var(--color-brand); box-shadow: var(--shadow-focus); }
.num__suffix {
  position: absolute; right: var(--s-4); top: 50%;
  transform: translateY(-50%);
  font-weight: 600; color: var(--color-ink-500);
  pointer-events: none;
}

/* ============================== Actions ============================== */
.actions {
  display: flex; flex-wrap: wrap; gap: var(--s-3);
  margin-top: var(--s-6);
  padding-top: var(--s-5);
  border-top: 1px solid var(--color-line);
}
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--s-2);
  font-family: var(--font-display);
  font-weight: 600; font-size: 15px;
  padding: var(--s-3) var(--s-5);
  border-radius: var(--r-md);
  border: 1.5px solid transparent;
  min-height: 48px;
  transition: background-color 180ms ease, border-color 180ms ease, transform 120ms ease, box-shadow 180ms ease, color 180ms ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: var(--color-accent);
  color: var(--color-brand-deep);
  box-shadow: 0 1px 0 rgba(255,255,255,0.4) inset, var(--shadow-sm);
}
.btn--primary:hover { background: var(--color-accent-strong); }
.btn--ghost {
  background: transparent;
  color: var(--color-ink-700);
  border-color: var(--color-line-strong);
}
.btn--ghost:hover { background: var(--color-surface-alt); }

/* ============================== Result =============================== */
.result {
  margin-top: var(--s-6);
  scroll-margin-top: 80px;
}
.result__card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  animation: fadeUp 320ms cubic-bezier(0.2, 0.7, 0.2, 1);
}
.result__head {
  display: flex; align-items: center; gap: var(--s-3);
  padding: var(--s-5) var(--s-6);
  background: linear-gradient(135deg, var(--color-brand) 0%, var(--color-brand-deep) 100%);
  color: #fff;
}
.result__head--warn {
  background: linear-gradient(135deg, #C2410C 0%, #92400E 100%);
}
.result__head .icon {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  background: var(--color-accent);
  color: var(--color-brand-deep);
  border-radius: 999px;
  flex-shrink: 0;
}
.result__head--warn .icon {
  background: rgba(255,255,255,0.2);
  color: #fff;
}
.result__head h2 {
  font-family: var(--font-display);
  font-size: 14px; font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0;
  opacity: 0.95;
}
.result__body {
  padding: var(--s-6);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-5);
}
@media (min-width: 640px) {
  .result__body { grid-template-columns: 1fr auto; align-items: start; }
}
.product__name {
  font-family: var(--font-display);
  font-size: 28px; font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 var(--s-2);
  color: var(--color-ink-900);
}
.product__why {
  margin: 0 0 var(--s-4);
  color: var(--color-ink-500);
  font-size: 15px;
}
.tags {
  display: flex; flex-wrap: wrap; gap: var(--s-2);
}
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 500;
  padding: 4px 10px;
  background: var(--color-brand-tint);
  color: var(--color-brand-deep);
  border-radius: 999px;
}
.tag svg { color: var(--color-brand); }
.qty {
  background: var(--color-accent-tint);
  border: 1px solid var(--color-accent-soft);
  border-radius: var(--r-md);
  padding: var(--s-4) var(--s-5);
  min-width: 200px;
}
.qty__label {
  font-size: 12px; font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-brand-deep);
  margin: 0 0 var(--s-1);
}
.qty__value {
  font-family: var(--font-display);
  font-size: 24px; font-weight: 700;
  color: var(--color-ink-900);
  margin: 0 0 var(--s-1);
  letter-spacing: -0.01em;
}
.qty__note {
  font-size: 12px; color: var(--color-ink-500);
  margin: 0;
}
.result__warn {
  padding: var(--s-5) var(--s-6);
  color: var(--color-ink-700);
}
.result__warn p { margin: 0 0 var(--s-3); }
.result__warn p:last-child { margin-bottom: 0; }

/* ============================== Footer =============================== */
.footer {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-block: var(--s-5);
  margin-top: var(--s-7);
  background: #FFFFFF;
}
.footer__inner {
  display: flex; flex-direction: column; align-items: center;
  gap: var(--s-4);
  text-align: center;
}
.footer p { margin: 0; font-size: 13px; color: var(--color-ink-500); }
.footer__by {
  display: inline-flex; align-items: center; gap: var(--s-2);
  font-size: 12px; color: var(--color-ink-400);
}
.footer__by span { letter-spacing: 0.04em; }
.footer__by a {
  display: inline-flex;
  opacity: 0.85;
  transition: opacity 180ms ease;
}
.footer__by a:hover, .footer__by a:focus-visible { opacity: 1; }
.footer__by img {
  height: 28px; width: auto; display: block;
}

/* ============================== Motion =============================== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}