/* ==========================================================================
   Corriendo al Centenario PUCV 2026 — Hoja de estilos
   Diseño: Stitch "Race Event Landing Page / Corriendo al Centenario -
   Vibrant Edition". Paleta azul institucional + ámbar + rojo. Tipografía Rubik.
   ========================================================================== */

:root {
  /* Colores */
  --azul: #00478d;
  --azul-vivo: #005eb8;
  --azul-oscuro: #001b3d;
  --ambar: #ffbb16;
  --ambar-texto: #6c4d00;
  --rojo: #940018;
  --rojo-vivo: #c10023;
  --bg: #f9f9ff;
  --blanco: #ffffff;
  --surface-low: #f2f3fb;
  --ink: #191c21;
  --ink-soft: #424752;
  --line: #c2c6d4;
  --outline: #727783;

  /* Tipografía */
  --font: "Rubik", system-ui, sans-serif;

  /* Espaciado */
  --sp-xs: 4px;
  --sp-sm: 12px;
  --sp-md: 24px;
  --sp-lg: 48px;
  --sp-xl: 80px;
  --margin-mobile: 16px;
  --margin-desktop: 64px;
  --container-max: 1280px;

  --header-h: 96px;
  --sombra-ambar: 4px 4px 0 var(--ambar);
}

@media (max-width: 1024px) {
  :root { --header-h: 76px; }
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--bg);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
h1, h2, h3, h4, p { margin: 0; }
a { color: inherit; }

::selection { background: var(--ambar); color: var(--azul-oscuro); }

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--margin-mobile);
}
.container--narrow { max-width: 1024px; }

@media (min-width: 768px) {
  .container { padding-inline: var(--margin-desktop); }
}

/* Líneas de velocidad (patrón diagonal) */
.hero__speedlines,
.circuitos__speedlines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 10px,
    rgba(255, 255, 255, 0.05) 10px,
    rgba(255, 255, 255, 0.05) 11px
  );
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  padding: 10px var(--sp-md);
  border: 0;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
}
.btn:active { transform: scale(0.95); }

.btn--primary {
  background: var(--azul);
  color: #fff;
  padding: 18px 28px;
  font-weight: 800;
  box-shadow: var(--sombra-ambar);
}
.btn--primary:hover {
  box-shadow: 6px 6px 0 var(--ambar);
  transform: translate(-2px, -2px);
}

.btn--amber {
  background: var(--ambar);
  color: var(--ambar-texto);
  box-shadow: 4px 4px 0 var(--azul-oscuro);
}
.btn--amber:hover {
  box-shadow: 6px 6px 0 var(--azul-oscuro);
  transform: translate(-2px, -2px);
}

.btn--ghost {
  background: transparent;
  border: 2px solid #fff;
  color: #fff;
}
.btn--ghost:hover { background: #fff; color: var(--azul); }

.btn--xl {
  padding: 16px 40px;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0;
}

.btn--download { padding: 22px 32px; font-size: 20px; font-weight: 600; }
.btn--download svg { width: 24px; height: 24px; }
.btn--download:hover svg { animation: rebote 0.6s infinite; }

@keyframes rebote {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  height: var(--header-h);
  background: var(--blanco);
  box-shadow: 0 8px 24px rgba(4, 31, 66, 0.08);
  overflow: hidden;
}

.header__inner {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  padding: 0 56px;
}

.header__brand { display: flex; align-items: center; flex-shrink: 0; }
.header__brand img { width: 220px; display: block; }

.header__sep {
  width: 1px;
  height: 42px;
  flex-shrink: 0;
  background: rgba(10, 79, 147, 0.35);
}

.header__lockup { height: 58px; width: auto; display: block; flex-shrink: 0; }

/* Decoraciones institucionales en los extremos */
.header__deco {
  position: absolute;
  pointer-events: none;
  background-repeat: no-repeat;
  background-size: contain;
  opacity: 0.75;
}
.header__deco--left {
  left: -32px;
  bottom: -38px;
  width: 220px;
  height: 100px;
  background-image: url("../assets/img/logos/deco-header-left.svg");
}
.header__deco--right {
  right: 22px;
  bottom: -22px;
  width: 240px;
  height: 96px;
  background-image: url("../assets/img/logos/deco-header-right.svg");
}

.nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav__link {
  position: relative;
  font-size: 16px;
  font-weight: 700;
  text-decoration: none;
  color: var(--azul-oscuro);
  transition: color 0.2s ease;
}
.nav__link:hover { color: var(--azul-vivo); }

.nav__link.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -16px;
  height: 3px;
  background: var(--ambar);
  border-radius: 3px;
}

.header__actions { display: flex; align-items: center; gap: var(--sp-md); flex-shrink: 0; }

.header__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: 0;
  cursor: pointer;
}
.header__toggle span {
  width: 26px;
  height: 3px;
  background: var(--azul);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.header__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.header__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.header__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

@media (max-width: 1024px) {
  .header__inner { padding: 0 var(--margin-mobile); }
  .header__brand img { width: 160px; }
  .header__lockup,
  .header__sep { display: none; }
  .header__deco--right { width: 170px; right: -24px; }
  .header__cta { padding: 14px 18px; font-size: 13px; }
  .header__toggle { display: flex; }

  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    margin-left: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--sp-md) var(--margin-mobile);
    background: var(--blanco);
    border-bottom: 2px solid rgba(0, 71, 141, 0.1);
    box-shadow: 0 8px 24px rgba(4, 31, 66, 0.08);
    transform: translateY(-130%);
    transition: transform 0.3s ease;
    visibility: hidden;
  }
  .nav.is-open { transform: translateY(0); visibility: visible; }

  .nav__link {
    padding: var(--sp-sm) 0;
    border-bottom: 1px solid var(--surface-low);
  }
  .nav__link.is-active::after { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
  background: var(--azul);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: url("../assets/img/hero/hero-v1.jpg") center / cover no-repeat;
}

.hero__gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(0, 27, 61, 0.92) 0%,
    rgba(0, 71, 141, 0.72) 40%,
    rgba(0, 71, 141, 0.25) 70%,
    rgba(0, 71, 141, 0.05) 100%
  );
}

.hero__speedlines { opacity: 0.15; }

.hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container-max);
  padding-inline: var(--margin-mobile);
}
@media (min-width: 768px) {
  .hero__content { padding-inline: var(--margin-desktop); }
}

.hero__inner { max-width: 768px; transform: skewX(-1deg); }

.hero__badge {
  display: inline-block;
  padding: 6px 16px;
  margin-bottom: var(--sp-md);
  background: var(--ambar);
  color: var(--ambar-texto);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero__title {
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: var(--sp-md);
}
.hero__title-amber { display: block; color: var(--ambar); }
.hero__title-soft { color: rgba(255, 255, 255, 0.8); }

.hero__lead {
  max-width: 576px;
  margin-bottom: 40px;
  padding-left: var(--sp-md);
  border-left: 4px solid var(--ambar);
  font-size: 18px;
  line-height: 28px;
  color: var(--surface-low);
}

.hero__ctas { display: flex; flex-direction: column; gap: 16px; }
@media (min-width: 640px) { .hero__ctas { flex-direction: row; } }

.hero__progress {
  position: absolute;
  bottom: 48px;
  left: var(--margin-desktop);
  right: var(--margin-desktop);
  display: none;
}
@media (min-width: 768px) { .hero__progress { display: block; } }

.hero__progress-track {
  position: relative;
  height: 2px;
  background: rgba(255, 255, 255, 0.2);
}

.hero__progress-fill {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 30%;
  height: 4px;
  background: var(--ambar);
}

.hero__progress-runner {
  position: absolute;
  left: 30%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ambar);
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  color: var(--ambar-texto);
}
.hero__progress-runner svg { width: 18px; height: 18px; }

/* ---------- Secciones ---------- */
.section { position: relative; }

.section__title {
  font-size: clamp(28px, 3.5vw, 32px);
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--azul);
  margin-bottom: var(--sp-md);
}
.section__title--center { text-align: center; }

.section__text {
  font-size: 18px;
  line-height: 1.65;
  color: var(--ink-soft);
  margin-bottom: var(--sp-md);
}

.kicker {
  display: block;
  margin-bottom: var(--sp-sm);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.kicker--red { color: var(--rojo); }

/* Cortes diagonales */
.diagonal { clip-path: polygon(0 0, 100% 0, 100% calc(100% - 4vw), 0 100%); }
.diagonal-reverse { clip-path: polygon(0 4vw, 100% 0, 100% 100%, 0 100%); }

/* ---------- El Evento ---------- */
.evento {
  background: var(--blanco);
  padding-block: 96px 128px;
  z-index: 20;
}

.evento__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-lg);
  align-items: center;
}
@media (min-width: 1024px) {
  .evento__grid { grid-template-columns: 1fr 1fr; gap: 64px; }
}

.evento__datos {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-md);
  margin-top: var(--sp-md);
}
@media (min-width: 768px) { .evento__datos { grid-template-columns: repeat(3, 1fr); } }

.dato { padding: var(--sp-md); background: var(--surface-low); }
.dato--rojo { border-bottom: 4px solid var(--rojo-vivo); }
.dato--ambar { border-bottom: 4px solid var(--ambar); }
.dato--azul { border-bottom: 4px solid var(--azul); }

.dato__icon { width: 32px; height: 32px; margin-bottom: 16px; }
.dato--rojo .dato__icon { color: var(--rojo-vivo); }
.dato--ambar .dato__icon { color: var(--ambar); }
.dato--azul .dato__icon { color: var(--azul); }

.dato__label {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--azul);
  margin-bottom: 4px;
}
.dato__valor { color: var(--ink-soft); }

.evento__foto { position: relative; }
.evento__foto::before {
  content: "";
  position: absolute;
  inset: -16px;
  background: rgba(255, 187, 22, 0.2);
  transform: skewX(3deg);
  z-index: 0;
}
.evento__foto img {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 4px solid var(--blanco);
  box-shadow: 0 25px 50px rgba(0, 27, 61, 0.25);
  filter: grayscale(100%);
  transition: filter 0.7s ease;
}
.evento__foto img:hover { filter: grayscale(0%); }

/* ---------- Categorías ---------- */
.circuitos {
  background: var(--azul);
  margin-top: -64px;
  padding: 128px 0 192px;
}
.circuitos__speedlines { opacity: 0.1; }

.circuitos .container { position: relative; z-index: 1; }

.circuitos__head { text-align: center; margin-bottom: 64px; }

.circuitos__title {
  font-size: clamp(36px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 16px;
}

.circuitos__underline { width: 96px; height: 8px; margin-inline: auto; background: var(--ambar); }

.circuitos__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-md);
}
@media (min-width: 768px) { .circuitos__grid { grid-template-columns: 1fr 1fr; } }

.circuito {
  background: var(--blanco);
  clip-path: polygon(0 0, 100% 4%, 100% 100%, 0 100%);
  transition: transform 0.3s ease;
}
.circuito:hover { transform: scale(1.02); }

.circuito__barra { height: 12px; }
.circuito__body { padding: 40px; }

.circuito__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--sp-md);
  margin-bottom: var(--sp-md);
}

.circuito__distancia {
  padding: 8px 24px;
  color: #fff;
  font-size: 24px;
  font-weight: 600;
  transform: skewX(-12deg);
}
.circuito__distancia span { display: block; transform: skewX(12deg); }

.circuito__cat { text-align: right; }
.circuito__cat-label {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.circuito__cat-nombre {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 900;
  line-height: 1;
}

.circuito__subtitulo {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--azul);
  margin-bottom: 16px;
}

.circuito__desc { font-size: 18px; line-height: 1.55; color: var(--ink-soft); margin-bottom: 32px; }

.circuito__lista { list-style: none; margin: 0 0 40px; padding: 0; display: grid; gap: 16px; }
.circuito__lista li { display: flex; align-items: center; gap: var(--sp-sm); }
.circuito__lista svg { width: 22px; height: 22px; flex-shrink: 0; }

.circuito__btn {
  display: block;
  width: 100%;
  padding: 16px;
  text-align: center;
  text-decoration: none;
  background: transparent;
  border: 2px solid currentColor;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s ease;
}

/* Variantes de color por categoría */
.circuito--rojo .circuito__barra,
.circuito--rojo .circuito__distancia { background: var(--rojo-vivo); }
.circuito--rojo { border-bottom: 8px solid var(--rojo-vivo); }
.circuito--rojo .circuito__cat-nombre,
.circuito--rojo .circuito__lista svg,
.circuito--rojo .circuito__btn { color: var(--rojo-vivo); }
.circuito--rojo .circuito__btn:hover { background: var(--rojo-vivo); color: #fff; }

.circuito--azul .circuito__barra,
.circuito--azul .circuito__distancia { background: var(--azul-vivo); }
.circuito--azul { border-bottom: 8px solid var(--azul-vivo); }
.circuito--azul .circuito__cat-nombre,
.circuito--azul .circuito__lista svg,
.circuito--azul .circuito__btn { color: var(--azul-vivo); }
.circuito--azul .circuito__btn:hover { background: var(--azul-vivo); color: #fff; }

/* Botón de recorrido pendiente (deshabilitado) — debe ir después de las
   variantes de color para anular su color e interacción */
.circuito .circuito__btn--pendiente,
.circuito .circuito__btn--pendiente:hover {
  background: transparent;
  color: var(--outline);
  border-style: dashed;
  cursor: not-allowed;
}

/* ---------- Inscripción ---------- */
.inscripcion {
  background: var(--bg);
  margin-top: -96px;
  padding-block: 96px;
  z-index: 30;
}

.inscripcion__iframe { display: block; min-height: 640px; }

/* ---------- Kit ---------- */
.kit { background: var(--blanco); padding-block: 96px; overflow: hidden; }

.kit__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-lg);
  align-items: center;
}
@media (min-width: 1024px) { .kit__grid { grid-template-columns: 1fr 1.1fr; gap: 80px; } }

.kit__foto { position: relative; margin: 0; transform: rotate(-1deg); }
.kit__foto img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  box-shadow: 0 25px 50px rgba(0, 27, 61, 0.25);
}
.kit__foto-marco {
  position: absolute;
  inset: 16px;
  border: 8px solid rgba(0, 94, 184, 0.2);
  pointer-events: none;
}

.kit__title {
  font-size: clamp(36px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--azul);
  margin-bottom: 16px;
}

.kit__items {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-md) 32px;
  margin-top: var(--sp-md);
}
@media (min-width: 640px) { .kit__items { grid-template-columns: 1fr 1fr; } }

.kit__item { display: flex; align-items: flex-start; gap: 16px; }
.kit__item p { color: var(--ink-soft); }

.kit__icon { width: 32px; height: 32px; flex-shrink: 0; }
.kit__icon--azul { color: var(--azul); }
.kit__icon--ambar { color: var(--ambar); }
.kit__icon--rojo { color: var(--rojo-vivo); }

.kit__item-title {
  font-size: 20px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--azul);
  margin-bottom: 2px;
}

/* ---------- Auspiciadores ---------- */
.sponsors {
  background: var(--surface-low);
  border-block: 1px solid rgba(194, 198, 212, 0.3);
  padding-block: 96px;
}

.sponsors__title {
  margin-bottom: var(--sp-lg);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-align: center;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.sponsors__grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: var(--sp-lg) var(--sp-xl);
}

.sponsor-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.sponsor-item__rol {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--azul);
}

.sponsor {
  height: 128px;
  width: 256px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: var(--blanco);
  border: 2px solid rgba(114, 119, 131, 0.1);
  filter: grayscale(100%);
  opacity: 0.75;
  transition: filter 0.4s ease, opacity 0.4s ease, border-color 0.3s ease;
}
.sponsor:hover { filter: grayscale(0%); opacity: 1; border-color: var(--azul); }
.sponsor img { max-height: 96px; max-width: 100%; width: auto; }

/* ---------- Bases ---------- */
.bases { background: var(--azul); padding-block: 96px; overflow: hidden; }

.bases__deco {
  position: absolute;
  right: 0;
  top: 0;
  width: 33%;
  height: 100%;
  background: rgba(255, 255, 255, 0.05);
  transform: skewX(12deg) translateX(96px);
}

.bases__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  text-align: center;
}
@media (min-width: 768px) {
  .bases__inner { flex-direction: row; text-align: left; }
}

.bases__title {
  font-size: clamp(28px, 3.5vw, 32px);
  font-weight: 700;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 16px;
}

.bases__texto { max-width: 576px; font-size: 18px; line-height: 1.6; color: rgba(255, 255, 255, 0.8); }

/* ---------- Footer ---------- */
.footer { background: var(--azul); color: #fff; }

.footer__main {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-md);
  padding: 64px var(--margin-mobile);
  text-align: center;
}

.footer__brand {
  font-size: 24px;
  font-weight: 700;
  text-transform: uppercase;
}

.footer__desc { max-width: 448px; color: rgba(255, 255, 255, 0.7); }

.footer__social { display: flex; gap: 16px; }
.footer__social a { color: #fff; transition: opacity 0.2s ease; }
.footer__social a:hover { opacity: 0.7; }
.footer__social svg { width: 24px; height: 24px; }

.footer__copy {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.footer__credits {
  padding: 12px var(--margin-mobile);
  background: var(--azul-oscuro);
  text-align: center;
}
.footer__credits p { font-size: 13px; color: rgba(255, 255, 255, 0.6); }
.footer__credits a {
  color: var(--ambar);
  text-decoration: none;
}
.footer__credits a:hover { text-decoration: underline; }

/* ---------- Animación de aparición ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s ease-out, transform 1s ease-out;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn--download:hover svg { animation: none; }
}