/* ==========================================================================
   Calculadora de IMC de Maveli
   Mismos tokens que maveli.es (static/css/maveli.css): verde bosque, pasteles,
   tipografía Red Hat. Las fuentes se sirven desde aquí y no desde Google Fonts,
   para que ninguna petición salga a terceros (ver /privacidad/).
   ========================================================================== */

@font-face {
  font-family: "Red Hat Display";
  src: url("/fonts/red-hat-display-latin-wght-normal.woff2") format("woff2");
  font-weight: 300 900;
  font-display: swap;
}
@font-face {
  font-family: "Red Hat Text";
  src: url("/fonts/red-hat-text-latin-wght-normal.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
}

:root {
  --forest-900: #0e2419;
  --forest-800: #163527;
  --forest-700: #1f5340;
  --forest-600: #26694f;
  --green-500: #2e936f;
  --green-400: #43ab84;
  --green-300: #8fd3b4;

  --mint-50: #deede0;
  --sky-50: #e4ecf2;
  --sand-50: #f2ebe1;
  --rose-50: #f2e6ec;

  --paper: #ffffff;
  --paper-soft: #faf9f7;
  --ink: #242220;
  --ink-soft: #5f5a54;
  --ink-mute: #8a8479;
  --line: #e6e2dc;

  --rose-500: #c9799f;
  --amber-500: #c98a3c;
  --amber-50: #fbf1e2;
  --danger-500: #b3524a;
  --info-50: #e8eff5;
  --info-500: #45718f;
  --success-50: #e4f2ea;

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;
  --r-pill: 999px;
  --shadow-lg: 0 18px 48px rgba(14, 36, 25, 0.16);
  --gutter: 20px;
  --maxw: 1080px;

  --font-body: "Red Hat Text", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Red Hat Display", var(--font-body);
}

/* ------------------------------------------------------------------ base */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 0.75rem; }
p { margin: 0 0 1rem; }
a { color: var(--forest-700); }
a:hover { color: var(--green-500); }
:focus-visible { outline: 3px solid var(--green-400); outline-offset: 2px; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.icon { width: 1.1em; height: 1.1em; flex: none; }

.skip { position: absolute; left: -9999px; top: 0; }
.skip:focus { left: 1rem; top: 1rem; z-index: 10; background: #fff; padding: 0.5rem 1rem; border-radius: var(--r-sm); }

/* ---------------------------------------------------------------- pills */
.pill {
  display: inline-flex; align-items: center;
  padding: 0.3rem 0.85rem;
  border-radius: var(--r-pill);
  font-size: 0.8rem; font-weight: 600;
  background: var(--mint-50); color: var(--forest-700);
}
.pill--light { background: rgba(255, 255, 255, 0.12); color: #fff; border: 1px solid rgba(255, 255, 255, 0.2); }
.pill--mint { background: rgba(143, 211, 180, 0.18); color: var(--green-300); }
.pill--info { background: var(--info-50); color: var(--info-500); }
.pill--success { background: var(--success-50); color: var(--forest-600); }
.pill--amber { background: var(--amber-50); color: #8a5a1c; }
.pill--rose { background: var(--rose-50); color: #8c3f63; }

/* --------------------------------------------------------------- topbar */
.topbar { background: var(--forest-700); }
.topbar__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 68px; }
.logo {
  font-family: var(--font-display);
  font-size: 2rem; font-weight: 700; letter-spacing: -0.03em;
  color: #fff; text-decoration: none; margin: 0;
}
.logo:hover { color: #fff; }
.logo span { color: var(--green-300); }

/* ----------------------------------------------------------------- hero */
/* Igual que en maveli.es: la tarjeta sube sobre el hero con un margen
   negativo, así que .hero__pad tiene que ser más alto que ese margen. */
.hero {
  background: radial-gradient(120% 90% at 50% 0%, var(--forest-600) 0%, var(--forest-700) 42%, var(--forest-900) 100%);
  color: #fff;
  padding-top: clamp(2.5rem, 6vw, 4.5rem);
  text-align: center;
}
.hero__inner { max-width: 760px; }
.hero h1 { font-size: clamp(2.1rem, 5.5vw, 3.4rem); margin-top: 1.1rem; }
.hero__lead { color: rgba(255, 255, 255, 0.85); font-size: clamp(1rem, 2.2vw, 1.15rem); max-width: 620px; margin: 0 auto; }
.hero__pad { height: 9rem; }
.overlap { margin-top: -6.5rem; position: relative; }

/* ----------------------------------------------------------------- card */
.card {
  background: var(--paper);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.4rem, 4vw, 2.5rem);
  max-width: 720px;
  margin: 0 auto;
}

.calc__form { display: grid; grid-template-columns: 1fr 1fr auto; gap: 1rem; align-items: start; }
.field label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 0.4rem; }
.field__control { position: relative; }
.field input {
  width: 100%;
  font: inherit; font-size: 1.15rem;
  padding: 0.8rem 3rem 0.8rem 1rem;
  border: 1.5px solid var(--line);
  border-radius: var(--r-md);
  background: var(--paper-soft);
  color: var(--ink);
}
.field input:focus { outline: none; border-color: var(--green-500); background: #fff; box-shadow: 0 0 0 4px rgba(46, 147, 111, 0.15); }
.field input[aria-invalid="true"] { border-color: var(--danger-500); }
.field__unit { position: absolute; right: 1rem; top: 50%; transform: translateY(-50%); color: var(--ink-mute); font-weight: 600; pointer-events: none; }
.field__error { color: var(--danger-500); font-size: 0.85rem; margin: 0.4rem 0 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font: inherit; font-weight: 700; font-size: 1rem;
  padding: 0.9rem 1.6rem;
  border: 0; border-radius: var(--r-pill);
  cursor: pointer; text-decoration: none;
  transition: background 0.15s ease, transform 0.15s ease;
}
.btn--primary { background: var(--green-500); color: #fff; }
.btn--primary:hover { background: var(--forest-600); color: #fff; }
.btn--primary:active { transform: translateY(1px); }
.btn--block { display: flex; width: 100%; }
.calc__submit { margin-top: 1.75rem; height: 3.1rem; white-space: nowrap; }

.calc__privacy { display: flex; gap: 0.5rem; align-items: center; justify-content: center; color: var(--ink-soft); font-size: 0.85rem; margin: 1.25rem 0 0; text-align: center; }

/* -------------------------------------------------------------- result */
.result { margin-top: 1.75rem; padding-top: 1.75rem; border-top: 1px solid var(--line); outline: none; scroll-margin-top: 1rem; }
.result__head { display: flex; align-items: baseline; flex-wrap: wrap; gap: 0.25rem 1rem; }
.result__label { flex-basis: 100%; margin: 0; color: var(--ink-soft); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; }
.result__value { font-family: var(--font-display); font-size: 3.4rem; font-weight: 700; line-height: 1; margin: 0; color: var(--forest-800); }
.result__title { font-size: 1.45rem; margin-top: 1.5rem; }
.result .btn { margin-top: 1.25rem; }

/* Escala de 15 a 45: 18,5 → 11,7 %, 25 → 33,3 %, 30 → 50 %, 35 → 66,7 %. */
.gauge {
  position: relative;
  height: 12px;
  margin: 1.4rem 0 0.4rem;
  border-radius: var(--r-pill);
  background: linear-gradient(90deg,
    var(--info-500) 0 11.7%,
    var(--green-400) 11.7% 33.3%,
    var(--amber-500) 33.3% 50%,
    var(--rose-500) 50% 100%);
}
.gauge__marker {
  position: absolute; top: 50%;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--forest-800);
  transform: translate(-50%, -50%);
  transition: left 0.5s ease;
}

.ticks { padding: 0; margin: 0; list-style: none; display: grid; gap: 0.5rem; }
.ticks li { position: relative; padding-left: 1.6rem; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 0.45em; width: 0.9rem; height: 0.5rem; border-left: 2.5px solid var(--green-500); border-bottom: 2.5px solid var(--green-500); transform: rotate(-45deg); }

/* ------------------------------------------------------------- sections */
.section { padding: clamp(3rem, 7vw, 5rem) 0; }
.section--tint { background: var(--paper-soft); }
.prose { max-width: 760px; }
.prose h2 { font-size: clamp(1.6rem, 3.5vw, 2.1rem); }
.prose p { color: var(--ink-soft); }

.table-wrap { overflow-x: auto; margin: 1.5rem 0; }
.bmi-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.bmi-table th { text-align: left; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ink-mute); padding: 0.6rem 1rem; border-bottom: 1px solid var(--line); }
.bmi-table td { padding: 0.75rem 1rem; border-bottom: 1px solid var(--line); }
.bmi-table td:first-child { font-weight: 600; white-space: nowrap; border-left: 4px solid transparent; }
.bmi-table tr[data-tono="bajo"] td:first-child { border-left-color: var(--info-500); }
.bmi-table tr[data-tono="normal"] td:first-child { border-left-color: var(--green-400); }
.bmi-table tr[data-tono="sobrepeso"] td:first-child { border-left-color: var(--amber-500); }
.bmi-table tr[data-tono="obesidad"] td:first-child { border-left-color: var(--rose-500); }

.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.tile { border-radius: var(--r-lg); padding: 1.75rem; }
.tile h3 { font-size: 1.2rem; color: var(--forest-800); }
.tile p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }
.tile--mint { background: var(--mint-50); }
.tile--sky { background: var(--sky-50); }
.tile--sand { background: var(--sand-50); }

.faq { border-bottom: 1px solid var(--line); padding: 1rem 0; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 1.05rem; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--green-500); font-size: 1.4rem; line-height: 1; }
.faq[open] summary::after { content: "−"; }
.faq p { margin: 0.75rem 0 0; }

.disclaimer { padding-bottom: 3rem; }
.disclaimer p { max-width: 760px; margin: 0 auto; padding: 1.1rem 1.25rem; background: var(--info-50); border-radius: var(--r-md); color: var(--ink-soft); font-size: 0.9rem; }

/* --------------------------------------------------------------- footer */
.footer { background: var(--forest-900); color: rgba(255, 255, 255, 0.7); padding: 2.5rem 0; font-size: 0.9rem; }
.footer__inner { display: flex; align-items: center; flex-wrap: wrap; gap: 1rem 2rem; }
.logo--footer { font-size: 1.5rem; margin-right: auto; }
.footer__links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; }
.footer a { color: rgba(255, 255, 255, 0.85); }
.footer a:hover { color: #fff; }
.footer__copy { margin: 0; flex-basis: 100%; color: rgba(255, 255, 255, 0.5); }

/* ---------------------------------------------------- página de texto */
.page { padding: clamp(2.5rem, 6vw, 4rem) 0; }
.page h1 { font-size: clamp(2rem, 5vw, 2.6rem); }
.page h2 { font-size: 1.3rem; margin-top: 2rem; }
.page ul { color: var(--ink-soft); padding-left: 1.2rem; }
.page .updated { color: var(--ink-mute); font-size: 0.9rem; }

/* ----------------------------------------------------------- responsive */
@media (max-width: 760px) {
  .calc__form { grid-template-columns: 1fr 1fr; }
  .calc__submit { grid-column: 1 / -1; margin-top: 0.25rem; width: 100%; }
  .tiles { grid-template-columns: 1fr; }
}
@media (max-width: 420px) {
  .calc__form { grid-template-columns: 1fr; }
  .result__value { font-size: 2.8rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .gauge__marker, .btn { transition: none; }
}