/* ==========================================================================
   SISTEMA DE ESTILOS - INVITACIÓN PREMIUM FUNCIONAL
   ========================================================================== */

/* Variables CSS Base (Serán sobrescritas dinámicamente por main.js) */
:root {
  --color-primary: #d4af37;
  --color-primary-hover: #b5922e;
  --color-secondary: #2c3e50;
  --color-text-main: #333333;
  --color-text-light: #7f8c8d;
  --color-bg-card: rgba(255, 255, 255, 0.85);
  --color-bg-overlay: rgba(44, 62, 80, 0.4);

  --title-font: 'Playfair Display', serif;
  --body-font: 'Montserrat', sans-serif;

  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --shadow-premium: 0 15px 35px rgba(0, 0, 0, 0.15);
  --border-radius-lg: 24px;
  --border-radius-md: 12px;
}

/* Reset y Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--body-font);
  color: var(--color-text-main);
  background-color: #111;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Fondo Deslizable (Sliding Background) */
.bg-slides {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  overflow: hidden;
}

.bg-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.8s ease-in-out, transform 8s ease-out;
  transform: scale(1.05);
}

.bg-slide.active {
  opacity: 1;
  transform: scale(1);
}

.bg-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background: var(--color-bg-overlay);
  backdrop-filter: blur(2px);
}

/* Contenedor Principal */
.main-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Secciones */
.section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 0;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.2s ease-out, transform 1.2s ease-out;
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Tarjeta Glassmorphic */
.glass-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: var(--border-radius-lg);
  padding: 3rem 2rem;
  width: 100%;
  max-width: 700px;
  box-shadow: var(--shadow-premium);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -50%;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right,
      rgba(255, 255, 255, 0) 0%,
      rgba(255, 255, 255, 0.1) 50%,
      rgba(255, 255, 255, 0) 100%);
  transform: skewX(-25deg);
  pointer-events: none;
}

/* Tipografía de Sección */
.section-title {
  font-family: var(--title-font);
  font-size: 2.2rem;
  color: var(--color-secondary);
  margin-bottom: 0.5rem;
  letter-spacing: 1px;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 1.5rem;
}

.decor-line {
  width: 80px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  margin: 1.5rem auto;
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
}

.event-type {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  padding: 0.4rem 1.2rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
  letter-spacing: 3px;
  background: rgba(212, 175, 55, 0.1);
  animation: pulse 2s infinite;
}

.event-title {
  font-family: var(--title-font);
  font-size: 4rem;
  color: var(--color-secondary);
  line-height: 1.2;
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.event-subtitle {
  font-size: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 4px;
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
}

.event-description {
  font-size: 1.1rem;
  color: var(--color-text-main);
  max-width: 500px;
  margin: 0 auto 2.5rem;
  font-weight: 300;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 2.2rem;
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition-smooth);
  letter-spacing: 1px;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border: none;
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(212, 175, 55, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--color-secondary);
  border: 2px solid var(--color-secondary);
}

.btn-secondary:hover {
  background: var(--color-secondary);
  color: #fff;
  transform: translateY(-3px);
}

.btn-whatsapp {
  background: #25d366;
  color: #fff;
  border: none;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  background: #20ba5a;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.5);
}

/* Cuenta Atrás */
.countdown-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.countdown-box {
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.6);
  padding: 1.5rem 1rem;
  border-radius: var(--border-radius-md);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.countdown-num {
  font-family: var(--title-font);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}

.countdown-unit {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--color-text-light);
  letter-spacing: 2px;
  margin-top: 0.5rem;
}

/* Detalles del Evento */
.place-name {
  font-family: var(--title-font);
  font-size: 1.8rem;
  color: var(--color-secondary);
  margin-top: 1rem;
}

.place-address {
  font-size: 1rem;
  color: var(--color-text-light);
  margin: 0.5rem 0 1.5rem;
}

.event-schedule {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 2rem;
  color: var(--color-text-main);
}

/* Carrete de Fotos (Carousel) */
.carousel-container {
  position: relative;
  width: 100%;
  max-width: 580px;
  margin: 1.5rem auto;
  display: flex;
  align-items: center;
}

.carousel-track-container {
  overflow: hidden;
  width: 100%;
  border-radius: var(--border-radius-md);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.carousel-track {
  display: flex;
  list-style: none;
  transition: transform 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.carousel-slide {
  min-width: 100%;
  aspect-ratio: 4/3;
  position: relative;
}

.carousel-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(5px);
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--color-secondary);
  transition: var(--transition-smooth);
}

.carousel-btn:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.prev-btn {
  left: -20px;
}

.next-btn {
  right: -20px;
}

.carousel-nav {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
}

.carousel-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(44, 62, 80, 0.2);
  border: none;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.carousel-indicator.active {
  background: var(--color-primary);
  width: 25px;
  border-radius: 10px;
}

/* Galería (Mosaico) */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  grid-auto-rows: 180px;
  grid-auto-flow: dense;
  gap: 12px;
  margin-top: 1.5rem;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  transition: var(--transition-smooth);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.gallery-item:hover img {
  transform: scale(1.08);
}

/* Variar el tamaño del mosaico para dinamismo */
.gallery-item.wide {
  grid-column: span 2;
}

.gallery-item.tall {
  grid-row: span 2;
}

.gallery-item.big {
  grid-column: span 2;
  grid-row: span 2;
}

.gallery-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.3);
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.5rem;
  transition: var(--transition-smooth);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

/* Lightbox Modal */
.lightbox {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.lightbox-content {
  max-width: 90%;
  max-height: 80%;
  object-fit: contain;
  border-radius: var(--border-radius-md);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  animation: zoom-in 0.3s ease;
}

.lightbox-close {
  position: absolute;
  top: 30px;
  right: 40px;
  color: #fff;
  font-size: 3rem;
  font-weight: 300;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.lightbox-close:hover {
  color: var(--color-primary);
  transform: rotate(90deg);
}

.lightbox-caption {
  color: #fff;
  margin-top: 1.5rem;
  font-family: var(--title-font);
  font-size: 1.2rem;
  letter-spacing: 1px;
}

/* Confirmación / RSVP */
.rsvp-deadline {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.rsvp-text {
  font-size: 1rem;
  color: var(--color-text-main);
  margin-bottom: 2rem;
}

.rsvp-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

/* Floating Music Player */
.music-player-container {
  position: fixed;
  bottom: 25px;
  right: 25px;
  z-index: 999;
}

.music-control-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 0.6rem 1.2rem 0.6rem 0.6rem;
  border-radius: 50px;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  box-shadow: var(--shadow-premium);
  transition: var(--transition-smooth);
}

.music-disk {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: var(--color-secondary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  transition: var(--transition-smooth);
}

.music-disk.playing {
  animation: spin 5s linear infinite;
  background: var(--color-primary);
}

.music-disk:hover {
  transform: scale(1.05);
}

.music-info {
  display: flex;
  flex-direction: column;
  max-width: 120px;
}

.music-title {
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--color-secondary);
}

.music-status {
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--color-text-light);
  letter-spacing: 1px;
}

/* Ecualizador Visual */
.visual-eq {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 15px;
}

.eq-bar {
  width: 3px;
  height: 3px;
  background: var(--color-text-light);
  border-radius: 2px;
  transition: height 0.2s ease;
}

.playing .eq-bar {
  background: var(--color-primary);
  animation: bounce 0.8s ease-in-out infinite alternate;
}

.playing .eq-bar:nth-child(1) {
  animation-delay: 0.1s;
}

.playing .eq-bar:nth-child(2) {
  animation-delay: 0.4s;
}

.playing .eq-bar:nth-child(3) {
  animation-delay: 0.2s;
}

.playing .eq-bar:nth-child(4) {
  animation-delay: 0.6s;
}

/* Footer */
.footer {
  text-align: center;
  padding: 4rem 0 2rem;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ==========================================================================
   ANIMACIONES
   ========================================================================== */
@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.4);
  }

  70% {
    transform: scale(1.03);
    box-shadow: 0 0 0 10px rgba(212, 175, 55, 0);
  }

  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(212, 175, 55, 0);
  }
}

@keyframes spin {
  100% {
    transform: rotate(360deg);
  }
}

@keyframes bounce {
  100% {
    height: 15px;
  }
}

@keyframes zoom-in {
  from {
    transform: scale(0.9);
    opacity: 0;
  }

  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* ==========================================================================
   RESPONSIVE DESIGN (Media Queries)
   ========================================================================== */

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  .event-title {
    font-size: 3rem;
  }

  .glass-card {
    padding: 2.5rem 1.5rem;
  }

  .countdown-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
  }

  .carousel-btn {
    width: 35px;
    height: 35px;
    font-size: 1rem;
  }

  .prev-btn {
    left: -10px;
  }

  .next-btn {
    right: -10px;
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    grid-auto-rows: 130px;
    gap: 8px;
  }

  .gallery-item.wide {
    grid-column: span 1;
  }

  .gallery-item.tall {
    grid-row: span 1;
  }

  .gallery-item.big {
    grid-column: span 2;
    grid-row: span 2;
  }

  .music-player-container {
    bottom: 15px;
    right: 15px;
  }
}

@media (max-width: 480px) {
  .event-title {
    font-size: 2.4rem;
  }

  .countdown-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 110px;
  }

  .gallery-item.big {
    grid-column: span 2;
    grid-row: span 2;
  }

  .btn {
    padding: 0.8rem 1.5rem;
    font-size: 0.9rem;
  }
}

.rsvp-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.rsvp-person-card {
  background: rgba(255, 255, 255, .45);
  border: 1px solid rgba(255, 255, 255, .5);
  border-radius: 16px;
  padding: 1rem;
  backdrop-filter: blur(8px);
}

.person-name {
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: .8rem;
  font-size: 1.05rem;
}

.rsvp-options {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.rsvp-options label {
  cursor: pointer;
  font-weight: 500;
}

.rsvp-options input {
  margin-right: .4rem;
}

.rsvp-success {
  background: #d4edda;
  color: #155724;
  padding: 12px;
  border-radius: 12px;
  margin-bottom: 20px;
  font-weight: 600;
}