/* ════════════════════════════════════════════════════════════════
   DATA AGILE — datagile.cloud
   Sistema: lienzo claro frío, tinta #10161F, acento azul #2F6FE0.
   Firma visual: cifras en JetBrains Mono; fugas en rojo, recuperado en verde.
   Cero frameworks. CSS total < 12 KB.
   ════════════════════════════════════════════════════════════════ */

:root {
  --bg: #F7F8FA;
  --surface: #FFFFFF;
  --ink: #10161F;
  --ink-soft: #4A5261;
  --line: #E4E7EC;
  --accent: #2F6FE0;
  --accent-ink: #1D4FB0;
  --loss: #C2372E;
  --gain: #0E6B4F;
  --dark: #0F1520;
  --dark-soft: #A9B2C0;
  --font-display: 'Archivo', system-ui, sans-serif;
  --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --radius: 10px;
  --container: 1080px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 760px; }

/* ─── Tipografía ─── */
h1, h2, h3 { font-family: var(--font-display); letter-spacing: -0.02em; line-height: 1.12; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); margin-bottom: 16px; }
h3 { font-size: 1.25rem; margin-bottom: 10px; }
.lead { font-size: 1.15rem; color: var(--ink-soft); margin-top: 20px; max-width: 34em; }
.eyebrow {
  font-family: var(--font-mono); font-size: 0.78rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-ink);
  margin-bottom: 18px;
}
.micro { font-size: 0.85rem; color: var(--ink-soft); margin-top: 10px; }
.mono { font-family: var(--font-mono); font-weight: 500; }
.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.num--loss { color: var(--loss); font-weight: 700; }
.num--gain { color: var(--gain); font-weight: 700; }

a { color: var(--accent-ink); }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}

/* ─── Botones ─── */
.btn {
  display: inline-block; font-family: var(--font-body); font-weight: 600;
  font-size: 1rem; text-decoration: none; text-align: center;
  padding: 14px 26px; border-radius: var(--radius); border: 1px solid transparent;
  cursor: pointer; transition: background-color .15s ease, transform .15s ease;
}
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-ink); transform: translateY(-1px); }
.btn--sm { padding: 9px 18px; font-size: 0.9rem; }
.btn--full { width: 100%; margin-top: 18px; }

/* ─── Nav ─── */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(247, 248, 250, 0.92); backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  max-width: var(--container); margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 28px;
}
.nav__brand {
  font-family: var(--font-display); font-weight: 700; font-size: 1.15rem;
  color: var(--ink); text-decoration: none; letter-spacing: -0.02em;
}
.nav__links { display: flex; gap: 22px; margin-left: auto; }
.nav__links a { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; }
.nav__links a:hover { color: var(--ink); }

/* ─── Hero ─── */
.hero { padding: 88px 0 104px; }
.hero__grid {
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center;
}
.hero__cta { margin-top: 32px; }
.hero__visual { display: grid; gap: 14px; }
.hero__visual-note { font-size: 0.8rem; color: var(--ink-soft); }

.alert-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px 22px;
  box-shadow: 0 1px 2px rgba(16, 22, 31, 0.04);
}
.alert-card--flag { border-left: 3px solid var(--loss); }
.alert-card__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.alert-card__badge {
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--loss); background: rgba(194, 55, 46, 0.08);
  padding: 4px 8px; border-radius: 5px;
}
.alert-card__badge--ok { color: var(--gain); background: rgba(14, 107, 79, 0.08); }
.alert-card__time { font-size: 0.75rem; color: var(--ink-soft); }
.alert-card__title { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; }
.alert-card__row { font-size: 0.9rem; color: var(--ink-soft); margin-top: 4px; }
.alert-card__meta { font-size: 0.8rem; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line); }

/* ─── Secciones ─── */
.section { padding: 104px 0; border-top: 1px solid var(--line); }
.section--alt { background: var(--surface); }
.section__intro { color: var(--ink-soft); max-width: 40em; margin-bottom: 44px; }
.section__close { margin-top: 44px; font-size: 1.1rem; max-width: 36em; }

/* ─── Tarjetas problema ─── */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px 26px;
}
.section--alt .card { background: var(--bg); }
.card__tag {
  display: block; font-size: 0.72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--loss); margin-bottom: 10px;
}
.card p { font-size: 0.97rem; color: var(--ink-soft); }

/* ─── Pasos mecanismo ─── */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.step { border-top: 2px solid var(--ink); padding-top: 18px; }
.step__label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent-ink); margin-bottom: 8px; }
.step p:last-child { font-size: 0.97rem; color: var(--ink-soft); }

/* ─── Calculadora ─── */
.calc {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 36px;
}
.calc__field { margin-bottom: 26px; }
.calc__field label {
  display: flex; justify-content: space-between; align-items: baseline;
  font-weight: 600; font-size: 0.95rem; margin-bottom: 10px;
}
.calc__field output { color: var(--accent-ink); font-weight: 700; }
input[type="range"] {
  width: 100%; height: 4px; appearance: none; -webkit-appearance: none;
  background: var(--line); border-radius: 2px; cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%;
  background: var(--accent); border: 3px solid #fff;
  box-shadow: 0 1px 4px rgba(16, 22, 31, 0.25);
}
input[type="range"]::-moz-range-thumb {
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--accent); border: 3px solid #fff;
  box-shadow: 0 1px 4px rgba(16, 22, 31, 0.25);
}
.calc__result {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 24px 0; margin: 30px 0; font-size: 1.15rem;
}
.calc__result .num { font-size: 1.35rem; }
.calc__gate h3 { margin-bottom: 8px; }
.calc__gate p { color: var(--ink-soft); font-size: 0.97rem; margin-bottom: 18px; }

/* ─── Caso / expediente ─── */
.case {
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 36px;
}
.case__label {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--ink-soft);
  border-bottom: 1px solid var(--line); padding-bottom: 14px; margin-bottom: 22px;
}
.case__row { display: grid; grid-template-columns: 130px 1fr; gap: 18px; padding: 14px 0; }
.case__row + .case__row { border-top: 1px solid var(--line); }
.case__row dt { font-family: var(--font-display); font-weight: 700; font-size: 0.95rem; }
.case__row dd { color: var(--ink-soft); font-size: 0.97rem; }
.case__quote {
  margin-top: 26px; padding: 20px 24px; border-left: 3px solid var(--accent);
  background: var(--surface); border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 1.05rem;
}
.case__quote footer { margin-top: 8px; font-size: 0.85rem; color: var(--ink-soft); }

/* ─── Puente ─── */
.bridge { text-align: left; }
.bridge p { color: var(--ink-soft); max-width: 40em; margin: 10px 0 16px; }
.link-arrow { font-weight: 600; text-decoration: none; }
.link-arrow:hover { text-decoration: underline; }

/* ─── CTA final (oscuro) ─── */
.section--dark { background: var(--dark); color: #F2F4F8; }
.section--dark h2 { color: #fff; }
.section--dark .section__intro { color: var(--dark-soft); }
.guarantee {
  border: 1px solid rgba(255, 255, 255, 0.18); border-left: 3px solid var(--gain);
  border-radius: var(--radius); padding: 22px 26px; margin-bottom: 30px;
  font-size: 1.05rem;
}
.calc-echo { color: var(--dark-soft); font-size: 0.9rem; margin-bottom: 16px; }

/* ─── Formulario ─── */
.form__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form__field label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; }
.form__field input {
  width: 100%; padding: 13px 14px; font-size: 1rem; font-family: var(--font-body);
  background: rgba(255, 255, 255, 0.06); color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18); border-radius: 8px;
}
.form__field input::placeholder { color: rgba(255, 255, 255, 0.35); }
.form__field input:focus { border-color: var(--accent); outline: none; }
.form-status { margin-top: 14px; font-size: 0.95rem; display: none; }
.form-status--success { color: #6FD3A7; display: block; }
.form-status--error { color: #F08A82; display: block; }

/* ─── Footer ─── */
.footer { border-top: 1px solid var(--line); padding: 36px 0; }
.footer__inner { display: grid; gap: 8px; font-size: 0.9rem; color: var(--ink-soft); }
.footer a { color: var(--ink-soft); }
.footer__legal { font-size: 0.8rem; }

/* ─── Responsive ─── */
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .cards-3, .steps { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
  .hero { padding: 56px 0 72px; }
  .nav__links { display: none; }
  .form__grid { grid-template-columns: 1fr; }
  .case__row { grid-template-columns: 1fr; gap: 4px; }
  .calc { padding: 26px 20px; }
}