/*=============================================
  RETOS DE LOS ALTOS - PÁGINA DE MANTENIMIENTO
  Identidad: Ciclismo MTB, Deportivo, Premium
  Sin dependencias externas ni scripts pesados
=============================================*/

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:ital,wght@0,600;0,700;0,800;0,900;1,700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Paleta Base Retos de los Altos */
  --rda-bg-primary: #0b0e14;
  --rda-bg-secondary: #121721;
  --rda-bg-card: rgba(24, 32, 44, 0.88);
  --rda-bg-card-border: rgba(34, 197, 94, 0.25);
  --rda-bg-surface: #222b3b;

  /* Color de Acción Principal (Verde Lima MTB) */
  --rda-accent: #22c55e;
  --rda-accent-hover: #16a34a;
  --rda-accent-glow: rgba(34, 197, 94, 0.35);
  --rda-accent-text: #052e16;

  /* Textos */
  --rda-text-primary: #f8fafc;
  --rda-text-secondary: #94a3b8;
  --rda-text-muted: #64748b;

  /* Tipografías */
  --rda-font-heading: 'Barlow Condensed', sans-serif;
  --rda-font-body: 'Inter', system-ui, -apple-system, sans-serif;

  /* Sombras y Efectos */
  --rda-shadow-card: 0 25px 50px -12px rgba(0, 0, 0, 0.7), 0 0 30px rgba(0, 0, 0, 0.5);
  --rda-shadow-glow: 0 0 25px var(--rda-accent-glow);
  --rda-radius-card: 24px;
  --rda-radius-btn: 12px;
  --rda-radius-pill: 9999px;
  --rda-transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset y base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  height: 100%;
}

body {
  min-height: 100dvh;
  background-color: var(--rda-bg-primary);
  color: var(--rda-text-primary);
  font-family: var(--rda-font-body);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: clamp(1rem, 3vw, 2.5rem);
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Fondo deportivo con overlay de alta legibilidad */
.bg-sports-layer {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(180deg, rgba(11, 14, 20, 0.88) 0%, rgba(11, 14, 20, 0.94) 100%),
    radial-gradient(circle at 50% 20%, rgba(34, 197, 94, 0.12) 0%, transparent 60%),
    url('../img/fondo.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: -2;
  pointer-events: none;
}

/* Efecto de cuadrícula técnica MTB */
.bg-grid-overlay {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -1;
  pointer-events: none;
}

/* Tarjeta Principal de Contenido */
.maintenance-card {
  width: 100%;
  max-width: 760px;
  background: var(--rda-bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--rda-bg-card-border);
  border-radius: var(--rda-radius-card);
  padding: clamp(2rem, 5vw, 3.5rem) clamp(1.25rem, 4vw, 3rem);
  text-align: center;
  box-shadow: var(--rda-shadow-card);
  position: relative;
  overflow: hidden;
  margin: auto;
  animation: cardFadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Franja decorativa deportiva superior */
.maintenance-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--rda-accent), transparent);
}

/* Contenedor del Logo */
.logo-wrapper {
  margin-bottom: 2rem;
  display: flex;
  justify-content: center;
}

.logo-brand {
  max-width: clamp(200px, 45vw, 290px);
  height: auto;
  filter: drop-shadow(0 6px 16px rgba(0, 0, 0, 0.6));
  transition: transform 0.3s ease;
}

.logo-brand:hover {
  transform: scale(1.02);
}

/* Badge de Estado */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(34, 197, 94, 0.12);
  border: 1px solid rgba(34, 197, 94, 0.3);
  padding: 0.45rem 1.1rem;
  border-radius: var(--rda-radius-pill);
  font-family: var(--rda-font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--rda-accent);
  margin-bottom: 1.5rem;
}

.pulse-indicator {
  width: 9px;
  height: 9px;
  background-color: var(--rda-accent);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6);
  animation: pulse-ring 2s infinite cubic-bezier(0.4, 0, 0.6, 1);
}

/* Título Principal */
.main-title {
  font-family: var(--rda-font-heading);
  font-size: clamp(2.2rem, 5.5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.8rem;
  color: var(--rda-text-primary);
}

.main-title .highlight-accent {
  color: var(--rda-accent);
  text-shadow: 0 0 20px var(--rda-accent-glow);
}

/* Subtítulo */
.subtitle {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  font-weight: 500;
  color: #cbd5e1;
  margin-bottom: 1.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Mensaje Descriptivo */
.description-text {
  font-size: clamp(0.95rem, 1.8vw, 1.05rem);
  color: var(--rda-text-secondary);
  line-height: 1.7;
  max-width: 580px;
  margin: 0 auto 2rem auto;
}

/* Mensaje Destacado */
.highlight-banner {
  background: rgba(34, 197, 94, 0.08);
  border: 1px dashed rgba(34, 197, 94, 0.35);
  border-radius: var(--rda-radius-btn);
  padding: 1rem 1.5rem;
  margin: 0 auto 2.2rem auto;
  max-width: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.highlight-banner-text {
  font-family: var(--rda-font-heading);
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--rda-accent);
}

/* Iconos de Redes / Contacto */
.contact-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.social-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
}

.social-link {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--rda-bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--rda-text-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  transition: var(--rda-transition);
}

.social-link svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.social-link:hover,
.social-link:focus-visible {
  background: var(--rda-accent);
  color: var(--rda-accent-text);
  transform: translateY(-3px);
  box-shadow: 0 4px 15px rgba(34, 197, 94, 0.4);
  border-color: var(--rda-accent);
  outline: none;
}

/* Pie de Página */
.maintenance-footer {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  color: var(--rda-text-muted);
}

.maintenance-footer a {
  color: var(--rda-text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.maintenance-footer a:hover {
  color: var(--rda-accent);
  text-decoration: underline;
}

/* Animaciones */
@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  }
  70% {
    transform: scale(1.05);
    box-shadow: 0 0 0 8px rgba(34, 197, 94, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
  }
}

/* Accesibilidad: Preferencia de Movimiento Reducido */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .pulse-indicator {
    animation: none;
    box-shadow: 0 0 6px var(--rda-accent);
  }
}

/* Ajustes Responsive para Pantallas Pequeñas */
@media (max-width: 480px) {
  .maintenance-card {
    padding: 2rem 1.25rem;
    border-radius: 18px;
  }

  .highlight-banner {
    padding: 0.85rem 1rem;
    gap: 0.5rem;
  }

  .description-text {
    margin-bottom: 1.5rem;
  }
}