:root {
  --navy: #0b3d6b;
  --navy-hi: #0b5fa5;
  --navy-lo: #082b49;
  --aqua: #0e93a8;
  --aqua-soft: #d9f1f4;
  --free: #0c7543;
  --ink: #142130;
  --muted: #586a7c;
  --line: #dde5ee;
  --bg: #f3f6fa;
  --card: #ffffff;
  --bg-alt: #f7fafc;
  --bg-alt2: #eef4fa;
  --bg-alt3: #e7f0f8;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(10, 34, 57, .08), 0 8px 22px rgba(10, 34, 57, .08);
}

html.tema-oscuro {
  --navy: #2f6ea8;
  --navy-hi: #6aa6d8;
  --navy-lo: #0a2136;
  --aqua: #45c2d4;
  --aqua-soft: #143a44;
  --free: #2aaa7a;
  --ink: #e8eef4;
  --muted: #9ab0c4;
  --line: #33465a;
  --bg: #171d24;
  --card: #212932;
  --bg-alt: #262f39;
  --bg-alt2: #2a333e;
  --bg-alt3: #2f3945;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 22px rgba(0, 0, 0, .45);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
}

a { color: var(--navy-hi); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg, video { max-width: 100%; height: auto; display: block; }

.envoltura { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }

/* ---------- Cabecera ---------- */
.cabera { background: var(--navy-lo); color: #fff; }
.cabera__alta {
  display: flex; align-items: center; gap: 18px;
  padding: 14px 20px;
}
.marca {
  display: flex; align-items: center; gap: 11px;
  color: #fff; font-weight: 700; font-size: 19px; letter-spacing: .2px;
}
.marca:hover { text-decoration: none; }
.marca__app { width: 40px; height: 40px; border-radius: 11px; flex: none; display: block; }
.marca small { display: block; font-size: 11px; font-weight: 500; color: #a9c4dd; letter-spacing: .4px; }
.nav { display: flex; flex-wrap: wrap; gap: 4px; margin-left: auto; align-items: center; }
.nav a, .nav button {
  color: #dbe8f4; background: none; border: 0; font: inherit; font-size: 15px;
  padding: 9px 13px; border-radius: 8px; cursor: pointer;
}
.nav a:hover, .nav button:hover { background: var(--navy-hi); color: #fff; text-decoration: none; }
.nav__tema {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; padding: 0;
  background: transparent; border: 1px solid rgba(255,255,255,.2); border-radius: 8px;
  color: #dbe8f4; cursor: pointer; transition: background .15s, border-color .15s;
}
.nav__tema:hover { background: var(--navy-hi); border-color: var(--navy-hi); color: #fff; }
.nav__tema-icono { width: 20px; height: 20px; }

.baner { background: var(--navy); color: #cfe1f2; font-size: 14px; }
.baner__lista { display: flex; flex-wrap: wrap; gap: 6px 22px; padding: 9px 20px; }
.baner a { color: #fff; font-weight: 600; }
.baner span { color: #94b6d3; }

/* ---------- Hero ---------- */
.hero { background: linear-gradient(120deg, var(--navy-lo), var(--navy) 58%, var(--navy-hi)); color: #fff; }
.hero__rejilla {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 34px;
  align-items: center; padding: 46px 20px 50px;
}
.hero h1 { font-size: 36px; line-height: 1.18; margin: 0 0 12px; letter-spacing: -.4px; }
.hero p { color: #d6e6f4; font-size: 17px; margin: 0 0 20px; max-width: 52ch; }
.hero__botones { display: flex; flex-wrap: wrap; gap: 10px; }
.hero__tarjeta {
  background: var(--card); color: var(--ink); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 22px; display: grid; grid-template-columns: 92px 1fr; gap: 16px; align-items: start;
}
.hero__tarjeta h2 { margin: 0 0 4px; font-size: 21px; }
.hero__tarjeta p { color: var(--muted); font-size: 15px; margin: 0 0 12px; }
.hero__meta { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 13px; color: var(--muted); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid transparent; border-radius: 8px; padding: 10px 18px;
  font: inherit; font-size: 15px; font-weight: 600; cursor: pointer; text-align: center;
}
.btn:hover { text-decoration: none; }
.btn--descarga { background: #0c7543; color: #fff; }
.btn--descarga:hover { background: #0a5c36; }
.btn--mar { background: var(--navy); color: #fff; }
.btn--mar:hover { background: var(--navy-hi); }
.btn--fant { background: var(--card); color: var(--navy); border-color: var(--line); }
.btn--fant:hover { border-color: var(--navy-hi); color: var(--navy-hi); }
.btn--fant--claro { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .45); }
.btn--fant--claro:hover { background: rgba(255, 255, 255, .12); color: #fff; border-color: #fff; }
.btn--grande { padding: 13px 26px; font-size: 16px; }

/* ---------- Secciones ---------- */
.seccion { padding: 44px 0; }
.seccion--blanca { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.seccion__titulo { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin: 0 0 8px; font-size: 26px; letter-spacing: -.3px; }
.seccion__texto { color: var(--muted); margin: 0 0 24px; max-width: 78ch; }
.seccion__subtitulo { font-size: 18px; margin: 32px 0 16px; color: var(--navy); font-weight: 600; }

/* ---------- Rejilla de fichas ---------- */
.rejilla { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }
.ficha {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 10px; box-shadow: var(--shadow);
}
.ficha__nombre { font-size: 17px; font-weight: 700; margin: 0; line-height: 1.3; }
.ficha__resumen { font-size: 14px; color: var(--muted); margin: 0; flex: 1; }

.icono {
  width: 50px; height: 50px; border-radius: 12px; flex: none;
  display: grid; place-items: center; color: #fff;
  background: linear-gradient(150deg, var(--navy-hi), var(--navy-lo));
}
.icono svg { width: 27px; height: 27px; }
.icono--agua { background: linear-gradient(150deg, #16a9c0, #0b6f88); }
.icono--ruta { background: linear-gradient(150deg, #2f7fc1, #0b3d6b); }
.icono--auto { background: linear-gradient(150deg, #4d6f92, #243b55); }
.icono--cobro { background: linear-gradient(150deg, #1c8f6a, #0b6048); }
.icono--promo { background: linear-gradient(150deg, #d9862f, #a1591b); }
.icono--datos { background: linear-gradient(150deg, #7a5bb5, #47307a); }
.icono--default { background: linear-gradient(150deg, #55677c, #2c3948); }

/* ---------- Notas ---------- */
.nota { font-size: 13px; color: var(--muted); }
.nota--alerta { background: #fffaf3; border: 1px solid #f0cf9a; border-radius: 10px; padding: 13px 15px; color: #7a4a12; font-size: 14px; }
.nota--ok { background: #eef8f1; border: 1px solid #b6e2c4; color: #15633a; border-radius: 10px; padding: 13px 15px; font-size: 14px; }
.nota--hash code {
  display: block; margin: 6px 0 0; padding: 9px 11px; background: var(--bg-alt2); border: 1px solid var(--line);
  border-radius: 7px; font-family: ui-monospace, Consolas, monospace; font-size: 12px;
  word-break: break-all; color: #34445a;
}
html.tema-oscuro .nota--alerta { background: #3a2d15; border-color: #6d5525; color: #f2d9a8; }
html.tema-oscuro .nota--ok { background: #123328; border-color: #1f5c43; color: #b8ead0; }
html.tema-oscuro .nota--hash code { color: #cfe0ee; }

/* ---------- Pie ---------- */
.pie { background: var(--navy-lo); color: #b9cfe3; font-size: 14px; margin-top: 34px; }
.pie__rejilla { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 26px; padding: 34px 20px 22px; }
.pie h4 { color: #fff; font-size: 15px; margin: 0 0 10px; }
.pie a { color: #cfe1f2; }
.pie__base {
  border-top: 1px solid rgba(255, 255, 255, .12); padding: 14px 20px 26px;
  display: flex; flex-wrap: wrap; gap: 10px 20px; justify-content: space-between;
}

/* ---------- Utilidades ---------- */
.centro { text-align: center; }
.marco {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; margin: 26px 0; max-width: 820px; box-shadow: var(--shadow);
}
.marco h1 { margin-top: 0; }
.marco h2 { margin: 30px 0 8px; font-size: 20px; color: var(--navy); }
.marco p, .marco li { color: #3c4e61; }
html.tema-oscuro .marco p, html.tema-oscuro .marco li { color: #c3d3e2; }
.marco ul { padding-left: 22px; }
.marco li { margin-bottom: 6px; }
dl { margin: 0; }
dt { font-weight: 700; margin-top: 14px; }
dd { margin: 3px 0 0; color: #40505f; }

@media (max-width: 940px) {
  .hero__rejilla { grid-template-columns: 1fr; }
  .cabera__alta { flex-wrap: wrap; }
  .nav { margin-left: 0; width: 100%; }
}
@media (max-width: 560px) {
  .hero h1 { font-size: 28px; }
  .hero { border-radius: 0; }
  .seccion { padding: 34px 0; }
  .nav a, .nav button { font-size: 14px; padding: 8px 8px; }
  .nav a[href="#vistas"], .nav a[href="index.html#vistas"] { display: none; }
  .nav__tema { width: 34px; height: 34px; }
}