/* ==========================================================================
   SIMA – Sistemas de Mensajería Automática
   Sitio estático: sin fuentes externas, sin JavaScript, sin rastreadores.
   ========================================================================== */

:root {
  --color-primary: #0B4F6C;       /* azul petróleo */
  --color-primary-dark: #083A50;
  --color-accent: #F2A541;        /* ámbar */
  --color-bg: #FFFFFF;
  --color-bg-soft: #F3F6F8;
  --color-border: #D9E2E8;
  --color-text: #17212B;
  --color-text-muted: #4B5A66;
  --color-on-primary: #FFFFFF;

  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --max-width: 1080px;
  --radius: 12px;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--color-primary); }
a:hover { color: var(--color-primary-dark); }
a:focus-visible, .btn:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 0.5em; }
h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.1rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 650; }
p { margin: 0 0 1em; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: var(--color-text);
  padding: 8px 16px;
  z-index: 100;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ---------- Encabezado ---------- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
}
.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  display: grid;
  place-items: center;
  font-size: 1.05rem;
}
.brand small {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--color-text-muted);
}
.site-nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}
.site-nav a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 550;
  font-size: 0.95rem;
}
.site-nav a:hover { color: var(--color-primary); }

/* ---------- Botones ---------- */
.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 650;
  text-decoration: none;
  border: 2px solid transparent;
}
.btn--accent { background: var(--color-accent); color: var(--color-text); }
.btn--accent:hover { background: #E8952A; color: var(--color-text); }
.btn--outline { border-color: var(--color-on-primary); color: var(--color-on-primary); }
.btn--outline:hover { background: rgba(255, 255, 255, 0.12); color: var(--color-on-primary); }

/* ---------- Secciones ---------- */
.section { padding: 72px 0; }
.section--soft { background: var(--color-bg-soft); }
.section-intro { max-width: 680px; color: var(--color-text-muted); margin-bottom: 36px; }

.hero {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 88px 0 80px;
}
.hero p { font-size: 1.15rem; max-width: 640px; opacity: 0.92; }
.hero .eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
}
.card p { color: var(--color-text-muted); margin: 0; }

.steps { counter-reset: paso; list-style: none; padding: 0; margin: 0; }
.steps li { counter-increment: paso; position: relative; padding-left: 0; }
.steps .card::before {
  content: counter(paso);
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-weight: 700;
  margin-bottom: 14px;
}

.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.checklist li { padding-left: 30px; position: relative; }
.checklist li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.5em;
  width: 12px;
  height: 7px;
  border-left: 3px solid var(--color-primary);
  border-bottom: 3px solid var(--color-primary);
  transform: rotate(-45deg);
}

.two-col { display: grid; gap: 40px; grid-template-columns: 1fr; }
@media (min-width: 820px) { .two-col { grid-template-columns: 1fr 1fr; } }

.note {
  border-left: 4px solid var(--color-accent);
  background: var(--color-bg-soft);
  padding: 16px 20px;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.contact-box {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
}
.contact-box p { opacity: 0.92; }
.contact-box a:not(.btn) { color: var(--color-on-primary); }

/* ---------- Páginas legales ---------- */
.legal { padding: 56px 0 72px; }
.legal .container { max-width: 800px; }
.legal h2 { font-size: 1.35rem; margin-top: 2em; }
.legal h3 { margin-top: 1.4em; }
.legal ul, .legal ol { padding-left: 1.3em; margin: 0 0 1em; }
.legal li { margin-bottom: 0.4em; }
.legal .updated { color: var(--color-text-muted); font-size: 0.95rem; }
.legal table { width: 100%; border-collapse: collapse; margin: 0 0 1.2em; font-size: 0.95rem; }
.legal th, .legal td { border: 1px solid var(--color-border); padding: 10px 12px; text-align: left; vertical-align: top; }
.legal th { background: var(--color-bg-soft); }
.table-wrap { overflow-x: auto; }

/* ---------- Pie ---------- */
.site-footer {
  background: var(--color-text);
  color: #C9D3DB;
  padding: 40px 0;
  font-size: 0.93rem;
}
.site-footer a { color: #FFFFFF; }
.site-footer ul { list-style: none; padding: 0; margin: 0 0 16px; display: flex; flex-wrap: wrap; gap: 8px 22px; }
.site-footer p { margin: 0 0 6px; }

@media (max-width: 600px) {
  .section { padding: 56px 0; }
  .hero { padding: 64px 0 56px; }
  .site-header .container { padding-top: 10px; padding-bottom: 10px; }
  .site-nav ul { gap: 14px; }
}