:root {
  --color-bg-black: #000000;
  --color-bg-light: #FFFFFF;
  --color-red-madrid: #AF1E2D;
  --color-text-main: #FFFFFF;
  --color-text-secondary: #EBEBEB;
  --color-text-dark: #000000;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  background-color: var(--color-bg-black);
  color: var(--color-text-main);
  -webkit-font-smoothing: antialiased;
}

h1,
h2 {
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1100px, 100% - 3rem);
  margin-inline: auto;
}

/* Header */

.site-header {
  background-color: var(--color-bg-black);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
  font-size: 0.85rem;
}

.brand {
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.tagline {
  color: var(--color-text-secondary);
  opacity: 0.85;
}

/* Hero */

.hero {
  background-color: var(--color-bg-black);
  min-height: calc(100vh - 72px);
  display: flex;
  align-items: center;
}

.hero-content {
  padding-block: 4rem;
  text-align: center;
}

.eyebrow {
  margin: 0 0 1.25rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-secondary);
  opacity: 0.8;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.6rem, 5vw, 3.8rem);
}

.hero-subtitle {
  margin: 0 0 2rem;
  font-size: 1.1rem;
  color: var(--color-text-secondary);
}

.hero-note {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  opacity: 0.9;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 2.8rem;
  border-radius: 999px;
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.85rem;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease, color 0.2s ease;
}

.btn-primary {
  background-color: var(--color-red-madrid);
  color: var(--color-text-main);
  box-shadow: 0 0 0 0 rgba(175, 30, 45, 0.3);
}

.btn-primary:hover {
  background-color: #c42b3b;
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(175, 30, 45, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 6px 14px rgba(175, 30, 45, 0.4);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-text-main);
  outline-offset: 3px;
}

/* Sección Filosofía */

.filosofia {
  background-color: var(--color-bg-light);
  color: var(--color-text-dark);
  padding-block: 4.5rem;
}

.filosofia-content {
  max-width: 720px;
}

.filosofia h2 {
  margin: 0 0 2rem;
  font-size: 1.4rem;
  text-align: center;
}

.filosofia p {
  margin: 0 0 1.25rem;
  line-height: 1.7;
  font-size: 1rem;
}

.filosofia p:last-child {
  margin-bottom: 0;
}

/* Sección Registro / Formulario */

.registro {
  background-color: var(--color-bg-black);
  color: var(--color-text-main);
  padding-block: 3.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.registro-content {
  max-width: 520px;
}

/* Aquí podrás añadir estilos específicos para el formulario más adelante */

/* Footer */

.site-footer {
  background-color: var(--color-bg-black);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-block: 1.75rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-nav a {
  color: var(--color-text-secondary);
  opacity: 0.85;
  position: relative;
}

.footer-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  width: 0;
  height: 1px;
  background-color: var(--color-text-secondary);
  transition: width 0.2s ease;
}

.footer-nav a:hover::after {
  width: 100%;
}

/* Responsivo */

@media (min-width: 768px) {
  .hero-content {
    text-align: center;
  }

  .footer-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}