/* =============================================
   LuxVive – Turismo Vivencial de Lujo
   styles.css  |  HTML5 + CSS3 Responsive
   ============================================= */

/* ---- RESET & VARIABLES ---- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-dark:    #0d0d0d;
  --color-gold:    #c9a84c;
  --color-gold-lt: #e8c97a;
  --color-cream:   #f7f3ec;
  --color-mist:    #e8e2d9;
  --color-text:    #1a1a1a;
  --color-subtle:  #6b6456;
  --color-white:   #ffffff;

  --font-display: 'Georgia', 'Times New Roman', serif;
  --font-body:    'Segoe UI', 'Helvetica Neue', Arial, sans-serif;

  --radius-card:  12px;
  --shadow-card:  0 8px 32px rgba(0,0,0,0.12);
  --transition:   0.4s ease;

  --max-width: 1200px;
  --section-pad: 80px 24px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-cream);
  color: var(--color-text);
  line-height: 1.65;
}

/* ---- TIPOGRAFÍA BASE ---- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.2;
}

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

/* =============================================
   HEADER
   ============================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-dark);
  border-bottom: 1px solid rgba(201,168,76,0.25);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 0.08em;
}

.logo-lux  { color: var(--color-gold); }
.logo-vive { color: var(--color-white); }

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
}

.main-nav a {
  color: var(--color-mist);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  -webkit-transition: color var(--transition);
          transition: color var(--transition);
}

.main-nav a:hover {
  color: var(--color-gold);
}

/* =============================================
   HERO
   ============================================= */
.hero {
  background: linear-gradient(135deg, var(--color-dark) 60%, #1e1409 100%);
  color: var(--color-white);
  padding: 120px 24px 100px;
  text-align: center;
}

.hero-content {
  max-width: 680px;
  margin: 0 auto;
}

.hero-eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  margin-bottom: 20px;
  color: var(--color-white);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--color-mist);
  margin-bottom: 36px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

/* =============================================
   BOTÓN PRINCIPAL
   ============================================= */
.btn-primary {
  display: inline-block;
  background-color: var(--color-gold);
  color: var(--color-dark);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 14px 36px;
  border-radius: 4px;
  border: 2px solid var(--color-gold);
  cursor: pointer;
  -webkit-transition: background-color var(--transition), color var(--transition), -webkit-transform 0.2s ease;
          transition: background-color var(--transition), color var(--transition), transform 0.2s ease;
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--color-gold);
  -webkit-transform: translateY(-2px);
          transform: translateY(-2px);
}

.btn-full {
  display: block;
  width: 100%;
  text-align: center;
}

/* =============================================
   ENCABEZADOS DE SECCIÓN
   ============================================= */
.section-header {
  text-align: center;
  margin-bottom: 52px;
}

.section-eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 10px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--color-dark);
}

/* =============================================
   ACTIVIDAD 1 – GALERÍA MULTIMEDIA
   ============================================= */
.section-destinos {
  padding: var(--section-pad);
  max-width: var(--max-width);
  margin: 0 auto;
}

/* Grid de 3 columnas en desktop, adaptativo */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* ---- TARJETA DE DESTINO ---- */
.destination-card {
  background-color: var(--color-white);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  /* Transición aplicada al hover del contenedor */
  -webkit-transition: -webkit-box-shadow var(--transition);
          transition: box-shadow var(--transition);
}

.destination-card:hover {
  box-shadow: 0 16px 48px rgba(0,0,0,0.2);
}

/* Imagen responsive */
.destination-card .responsive-img {
  display: block;
  width: 100%;
  height: 240px;
  object-fit: cover;
  /* TRANSICIÓN CSS requerida por la práctica: escala en 0.4s */
  -webkit-transition: -webkit-transform var(--transition);
          transition: transform var(--transition);
}

.destination-card:hover .responsive-img {
  /* transform: scale(1.05) – requerido por la rúbrica */
  -webkit-transform: scale(1.05);
          transform: scale(1.05);
}

/* Figcaption: leyenda con transición de opacidad */
.destination-card figcaption {
  padding: 24px;
  -webkit-transition: opacity var(--transition);
          transition: opacity var(--transition);
}

.destination-card:hover figcaption {
  opacity: 0.85;
}

.card-tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  background-color: rgba(201,168,76,0.1);
  padding: 3px 10px;
  border-radius: 2px;
  margin-bottom: 10px;
}

.destination-card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
  color: var(--color-dark);
}

.destination-card p {
  font-size: 0.88rem;
  color: var(--color-subtle);
  margin-bottom: 14px;
}

.card-price {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-gold);
}

/* =============================================
   ACTIVIDAD 2 – TABLA DE TARIFAS
   ============================================= */
.section-tarifas {
  background-color: var(--color-dark);
  padding: var(--section-pad);
  color: var(--color-white);
}

.section-tarifas .section-header h2 {
  color: var(--color-white);
}

.table-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  overflow-x: auto; /* scroll horizontal en móvil */
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

/* Caption para accesibilidad */
.pricing-table caption {
  caption-side: top;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold);
  padding-bottom: 14px;
  text-align: left;
}

/* Cabeceras – fondo corporativo oscuro */
.pricing-table thead th {
  background-color: var(--color-gold);
  color: var(--color-dark);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 14px 18px;
  text-align: left;
  white-space: nowrap;
}

/* Cuerpo de la tabla */
.pricing-table tbody td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  vertical-align: middle;
}

/* Coloración alterna de filas – pseudoclase :nth-child(even) */
.pricing-table tbody tr:nth-child(even) {
  background-color: rgba(255,255,255,0.05);
}

.pricing-table tbody tr:hover {
  background-color: rgba(201,168,76,0.08);
}

.package-name {
  font-weight: 600;
  color: var(--color-gold-lt);
}

.price {
  font-weight: 700;
  color: var(--color-gold);
  white-space: nowrap;
}

/* Pie de tabla */
.pricing-table tfoot td {
  padding: 12px 18px;
  font-size: 0.78rem;
  color: var(--color-subtle);
  border-top: 1px solid rgba(255,255,255,0.1);
  font-style: italic;
}

/* =============================================
   ACTIVIDAD 3 – FORMULARIO DE RESERVA
   ============================================= */
.section-reserva {
  padding: var(--section-pad);
  background-color: var(--color-cream);
}

.section-reserva .section-header {
  max-width: var(--max-width);
  margin: 0 auto 52px;
}

.form-container {
  max-width: 620px;
  margin: 0 auto;
}

.form-card {
  background-color: var(--color-white);
  border-radius: var(--radius-card);
  padding: 44px 40px;
  box-shadow: var(--shadow-card);
}

.form-group {
  margin-bottom: 22px;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-subtle);
  margin-bottom: 7px;
}

.form-group strong {
  color: var(--color-gold);
  font-weight: 700;
}

/* Inputs, select */
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group input[type="date"],
.form-group select {
  display: block;
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-mist);
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background-color: #fafafa;
  -webkit-transition: border-color var(--transition), box-shadow var(--transition);
          transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
          appearance: none;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(201,168,76,0.2);
}

/* Validación nativa: verde si válido, rojo si inválido (solo tras interacción) */
.form-group input:not(:placeholder-shown):valid {
  border-color: #4caf50;
}

.form-group input:not(:placeholder-shown):invalid {
  border-color: #e53935;
}

/* Slider de presupuesto */
.form-group input[type="range"] {
  display: block;
  width: 100%;
  height: 6px;
  border: none;
  padding: 0;
  accent-color: var(--color-gold);
  cursor: pointer;
  background: transparent;
}

.range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--color-subtle);
  margin-top: 6px;
}

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
  background-color: var(--color-dark);
  color: var(--color-mist);
  padding: 36px 24px;
  text-align: center;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.site-footer p {
  font-size: 0.82rem;
  color: var(--color-subtle);
}

/* =============================================
   RESPONSIVE – TABLET (max-width: 1024px)
   ============================================= */
@media (max-width: 1024px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    padding: 80px 24px 70px;
  }
}

/* =============================================
   RESPONSIVE – MÓVIL (max-width: 480px)
   ============================================= */
@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .main-nav ul {
    gap: 16px;
    flex-wrap: wrap;
  }

  .hero {
    padding: 60px 20px 50px;
  }

  .form-card {
    padding: 28px 20px;
  }

  :root {
    --section-pad: 52px 20px;
  }
}