/* ===== RESET Y BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --fondo: #0f0f1a;
  --superficie: #1a1a2e;
  --tarjeta: #16213e;
  --acento: #00d4ff;
  --acento2: #7c3aed;
  --texto: #e2e8f0;
  --texto-sec: #94a3b8;
  --borde: #2d2d4a;
  --sombra: rgba(0, 212, 255, 0.15);
}

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--fondo);
  color: var(--texto);
  line-height: 1.7;
  min-height: 100vh;
}

/* ===== HEADER ===== */
header {
  background: linear-gradient(135deg, var(--superficie), var(--tarjeta));
  padding: 2rem 1rem;
  text-align: center;
  border-bottom: 2px solid var(--borde);
  position: relative;
  overflow: hidden;
}

header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, var(--sombra) 0%, transparent 70%);
  animation: pulso 4s ease-in-out infinite;
}

@keyframes pulso {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.2); opacity: 0.6; }
}

header h1 {
  font-size: 2.8rem;
  font-weight: 800;
  background: linear-gradient(90deg, var(--acento), var(--acento2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
  letter-spacing: -1px;
}

header p {
  color: var(--texto-sec);
  margin-top: 0.5rem;
  font-size: 1.1rem;
  position: relative;
  z-index: 1;
}

/* ===== BANNER VENTA ===== */
.banner-venta {
  background: linear-gradient(90deg, var(--acento2), #a855f7);
  color: white;
  text-align: center;
  padding: 1.2rem;
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  animation: destello 2s infinite;
}

@keyframes destello {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; }
}

/* ===== PORTADA ===== */
#portada {
  width: 100%;
  height: 400px;
  overflow: hidden;
  position: relative;
  background: var(--superficie);
}

#portada img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease, filter 0.5s ease;
}

#portada img:hover {
  transform: scale(1.05);
  filter: brightness(1.1) saturate(1.2);
}

.sin-imagen {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  background: linear-gradient(135deg, var(--tarjeta), var(--superficie));
  color: var(--texto-sec);
  font-size: 1.2rem;
  border: 2px dashed var(--borde);
}

.sin-imagen::before {
  content: '🖼️';
  font-size: 3rem;
  margin-right: 1rem;
}

/* ===== CONTENEDOR PRINCIPAL ===== */
.contenedor {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* ===== SECCIÓN POSTS ===== */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.post-card {
  background: var(--tarjeta);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--borde);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
}

.post-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 40px var(--sombra);
  border-color: var(--acento);
}

.post-card .img-post {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.post-card:hover .img-post {
  transform: scale(1.1);
}

.post-card .sin-img {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--superficie), #1e1e3a);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--texto-sec);
  font-size: 0.9rem;
}

.post-card .contenido {
  padding: 1.5rem;
}

.post-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
  color: var(--acento);
}

.post-card p {
  color: var(--texto-sec);
  font-size: 0.95rem;
  line-height: 1.6;
}

.post-card .fecha {
  display: block;
  font-size: 0.8rem;
  color: #555;
  margin-top: 1rem;
  border-top: 1px solid var(--borde);
  padding-top: 0.8rem;
}

/* ===== MODAL ===== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  animation: fadeIn 0.3s ease;
}

.modal-overlay.activo {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

.modal-contenido {
  background: var(--superficie);
  border-radius: 20px;
  padding: 2.5rem;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  border: 1px solid var(--borde);
  position: relative;
}

.modal-contenido h2 {
  color: var(--acento);
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.modal-contenido p {
  color: var(--texto-sec);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.modal-cerrar {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 2rem;
  color: var(--texto-sec);
  cursor: pointer;
  transition: color 0.3s;
  background: none;
  border: none;
}

.modal-cerrar:hover {
  color: var(--acento);
  transform: rotate(90deg);
}

/* ===== BARRA DE PROGRESO ===== */
.barra-progreso {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--acento), var(--acento2));
  z-index: 9999;
  width: 0%;
  transition: width 0.3s;
}

/* ===== CONTADOR DE POSTS ===== */
.estadisticas {
  display: flex;
  gap: 2rem;
  justify-content: center;
  margin: 2rem 0;
  flex-wrap: wrap;
}

.estadistica {
  background: var(--superficie);
  border: 1px solid var(--borde);
  border-radius: 12px;
  padding: 1rem 2rem;
  text-align: center;
  transition: all 0.3s;
}

.estadistica:hover {
  border-color: var(--acento);
  box-shadow: 0 0 20px var(--sombra);
}

.estadistica .numero {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(90deg, var(--acento), var(--acento2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.estadistica .etiqueta {
  font-size: 0.85rem;
  color: var(--texto-sec);
  margin-top: 0.3rem;
}

/* ===== NOTIFICACIÓN ===== */
.notificacion {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--superficie);
  border: 1px solid var(--acento);
  border-radius: 12px;
  padding: 1rem 1.5rem;
  color: var(--texto);
  box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 9998;
}

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

/* ===== FOOTER ===== */
footer {
  text-align: center;
  padding: 2rem;
  color: var(--texto-sec);
  border-top: 1px solid var(--borde);
  margin-top: 3rem;
  font-size: 0.9rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
  header h1 { font-size: 2rem; }
  #portada { height: 250px; }
  .posts-grid { grid-template-columns: 1fr; }
  .modal-contenido { padding: 1.5rem; }
  .estadisticas { gap: 1rem; }
  .estadistica { padding: 0.8rem 1.2rem; }
}