/* Colores tomados de la app: colorPrimary/colorPrimaryDark/colorAccent en
   app/src/main/res/values/colors.xml. Mismo azul en las dos webs y en Android,
   para que las paginas legales se reconozcan como parte de FuelRadar. */
:root {
  --bg: #ffffff;
  --fg: #1c1e21;
  --muted: #5c6670;
  --accent: #1e88e5;        /* colorPrimary */
  --accent-strong: #1565c0; /* colorPrimaryDark, tambien el fondo del icono */
  --accent-warm: #ff9800;   /* colorAccent */
  --border: #e2e6ea;
  --card: #f7f9fb;
  /* Landing */
  --card-2: #ffffff;
  --band: #f2f6fa;
  --btn-bg: #1565c0;
  --btn-fg: #ffffff;
  --shadow: 0 1px 2px rgba(16, 24, 32, .06), 0 8px 24px rgba(16, 24, 32, .08);
  --bezel: #10151a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121212;
    --fg: #e9ecef;
    --muted: #a8b0b8;
    --accent: #64b5f6;
    --accent-strong: #90caf9;
    --accent-warm: #ffb74d;
    --border: #2a2f34;
    --card: #1b1f23;
    /* Landing */
    --card-2: #1b1f23;
    --band: #171b1f;
    --btn-bg: #64b5f6;
    --btn-fg: #0a1520;
    --shadow: 0 1px 2px rgba(0, 0, 0, .5), 0 8px 24px rgba(0, 0, 0, .45);
    --bezel: #05080b;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 2rem 1.25rem 4rem;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
  /* Franja superior con el azul de marca, visible incluso antes de leer nada */
  border-top: 4px solid var(--accent-strong);
}

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

main {
  max-width: 46rem;
  margin: 0 auto;
}

header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.25rem;
  margin-bottom: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin-bottom: 1.1rem;
  color: var(--fg);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
}

.brand:hover { color: var(--accent); }

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  flex-shrink: 0;
}

/* Solo en index.html: el icono va junto al H1 en vez de en una fila propia,
   porque el H1 de esa pagina ya es "FuelRadar" y no hace falta repetirlo. */
.brand-row {
  display: flex;
  align-items: center;
  gap: .65rem;
}

.brand-row h1 { margin: 0; }
.brand-row .brand-mark { width: 34px; height: 34px; }

h1 {
  font-size: 1.9rem;
  line-height: 1.2;
  margin: 0 0 .4rem;
}

h2 {
  font-size: 1.25rem;
  margin: 2.5rem 0 .75rem;
  padding-top: .5rem;
}

h3 {
  font-size: 1.05rem;
  margin: 1.75rem 0 .5rem;
}

p, li { margin: .6rem 0; }

ul { padding-left: 1.3rem; }

a {
  color: var(--accent);
  text-overflow: ellipsis;
  overflow-wrap: anywhere;
}

.updated {
  color: var(--muted);
  font-size: .9rem;
  margin: 0;
}

.lead {
  font-size: 1.05rem;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.card p:first-child { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: .95rem;
}

th, td {
  text-align: left;
  padding: .6rem .5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th { color: var(--muted); font-weight: 600; }

.table-wrap { overflow-x: auto; }

footer {
  margin-top: 3.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: .9rem;
}

nav a { margin-right: 1.25rem; display: inline-block; }

/* ------------------------------------------------------------------ Landing
   Todo lo de aqui abajo es exclusivo de index.html (body.landing). Las paginas
   legales siguen usando solo las reglas de arriba. */

.landing { padding: 0; }
.landing main { max-width: none; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: .5rem;
  background: var(--btn-bg);
  color: var(--btn-fg);
  padding: .5rem .9rem;
  border-radius: 8px;
  z-index: 10;
}

.skip-link:focus { left: .75rem; }

.wrap {
  max-width: 64rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.wrap.narrow { max-width: 46rem; }

/* Cabecera ---------------------------------------------------------------- */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  padding-top: .85rem;
  padding-bottom: .85rem;
}

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .35rem 1.25rem;
}

.site-nav a {
  margin: 0;
  font-size: .95rem;
  text-decoration: none;
  color: var(--muted);
}

.site-nav a:hover { color: var(--accent); }
.site-nav .btn { color: var(--btn-fg); }

/* Los enlaces de seccion son ruido en movil: se queda solo el CTA. */
@media (max-width: 40rem) {
  .site-nav a:not(.btn) { display: none; }
}

/* Secciones --------------------------------------------------------------- */

.section { padding: 3.5rem 0; }
.section--tight { padding: 1.75rem 0; }
.section--hero { padding-top: 2.5rem; }
.section--alt { background: var(--band); }
.section--cta { background: var(--band); text-align: center; }

.section h2 {
  font-size: 1.6rem;
  margin-top: 0;
}

.section-lead {
  color: var(--muted);
  max-width: 38rem;
  margin-top: -.25rem;
}

/* Hero -------------------------------------------------------------------- */

.hero {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 52rem) {
  .hero { grid-template-columns: 1.15fr .85fr; gap: 3rem; }
  .section--hero { padding: 4rem 0 3.5rem; }
}

.hero h1 { font-size: clamp(1.9rem, 1.2rem + 2.6vw, 2.9rem); }
.hero .lead { font-size: 1.1rem; }

.eyebrow {
  margin: 0 0 .5rem;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
  /* accent-strong y no accent: en texto pequeno el azul claro no llega a 4.5:1 */
  color: var(--accent-strong);
}

.hero__shot { justify-self: center; }

.fineprint {
  color: var(--muted);
  font-size: .88rem;
}

/* Botones ----------------------------------------------------------------- */

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: 1.5rem 0 1rem;
}

.section--cta .cta-row { justify-content: center; }

.btn {
  display: inline-block;
  padding: .8rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: transform .12s ease, background-color .12s ease;
}

.btn--primary { background: var(--btn-bg); color: var(--btn-fg); }
.btn--primary:hover { transform: translateY(-1px); }

.btn--ghost {
  border-color: var(--border);
  color: var(--fg);
  background: var(--card-2);
}

.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn--sm { padding: .5rem 1rem; font-size: .92rem; }

@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
  .btn--primary:hover { transform: none; }
}

/* Marco de movil para las capturas ---------------------------------------- */

.phone {
  background: var(--bezel);
  border-radius: 26px;
  padding: 8px;
  box-shadow: var(--shadow);
  width: min(100%, 19rem);
  margin: 0 auto;
}

.phone--sm { width: min(100%, 15rem); }

.phone__screen {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 19px;
}

/* Cifras ------------------------------------------------------------------ */

.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 1rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
}

.stat { text-align: center; }

.stat strong {
  display: block;
  font-size: 1.7rem;
  line-height: 1.1;
  color: var(--accent);
}

.stat span {
  display: block;
  color: var(--muted);
  font-size: .9rem;
  margin-top: .15rem;
}

/* Funciones --------------------------------------------------------------- */

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.feature {
  background: var(--card-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.4rem;
}

.feature h3 { margin: .85rem 0 .35rem; font-size: 1.08rem; }
.feature p { margin: 0; color: var(--muted); font-size: .96rem; }

.feature__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 10px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
}

.feature__icon svg { width: 1.4rem; height: 1.4rem; }

/* Galeria de capturas ----------------------------------------------------- */

.gallery {
  display: grid;
  /* 10rem para que en movil entren dos columnas y la seccion no se alargue */
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 1.75rem 1.25rem;
}

.gallery figure { margin: 0; text-align: center; }

.gallery figcaption {
  color: var(--muted);
  font-size: .88rem;
  margin-top: .75rem;
}

/* Pasos ------------------------------------------------------------------- */

.steps {
  list-style: none;
  counter-reset: paso;
  padding: 0;
  margin: 2rem 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.5rem;
}

.steps li { counter-increment: paso; margin: 0; }

.steps li::before {
  content: counter(paso);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 700;
}

.steps h3 { margin: .8rem 0 .3rem; font-size: 1.05rem; }
.steps p { margin: 0; color: var(--muted); font-size: .96rem; }

/* Privacidad -------------------------------------------------------------- */

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1rem;
  margin: 1.75rem 0;
}

.privacy-grid .card { margin: 0; background: var(--card-2); }
.privacy-grid .card p { margin: .35rem 0 0; color: var(--muted); font-size: .94rem; }

.card--tick strong { display: block; padding-left: 1.7rem; position: relative; }

.card--tick strong::before {
  content: "";
  position: absolute;
  left: 0;
  top: .35em;
  width: .95rem;
  height: .5rem;
  border-left: 2.5px solid var(--accent);
  border-bottom: 2.5px solid var(--accent);
  transform: rotate(-45deg);
}

/* FAQ --------------------------------------------------------------------- */

.faq {
  margin-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.faq details { border-bottom: 1px solid var(--border); }

.faq summary {
  cursor: pointer;
  padding: .95rem 0;
  font-weight: 600;
  list-style-position: inside;
}

.faq summary:focus-visible { outline: 2px solid var(--accent-warm); outline-offset: 2px; }
.faq p { margin: 0 0 1rem; color: var(--muted); }

/* CTA final y pie --------------------------------------------------------- */

.cta-box h2 { margin-bottom: .5rem; }
.cta-box p { color: var(--muted); max-width: 34rem; margin-inline: auto; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0 3.5rem;
  color: var(--muted);
  font-size: .88rem;
}

.site-footer nav { margin-bottom: 1rem; }
.site-footer p { max-width: 46rem; }