/* ===== VARIABLES GLOBALES ===== */
:root {
  /* Colores principales */
  --primary: #00b5cc;
  --primary-dark: #0097a8;
  --secondary: #97ce4c;
  --danger: #e74c3c;
  --warning: #f39c12;
  --success: #2ecc71;
  --favorite: #ff6b6b;
  
  /* Fondos */
  --bg-dark: #1e1e2f;
  --bg-card: #2d2d44;
  --bg-overlay: rgba(0, 0, 0, 0.85);
  
  /* Texto */
  --text-light: #f0f0f0;
  --text-gray: #b8b8d0;
  --text-muted: #aaa;
  
  /* Bordes y sombras */
  --border-radius-sm: 0.5rem;
  --border-radius-md: 0.75rem;
  --border-radius-lg: 1rem;
  --border-radius-xl: 1.5rem;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  
  /* Espaciado base (1rem = 16px) */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 0.75rem;
  --spacing-lg: 1rem;
  --spacing-xl: 1.5rem;
  --spacing-2xl: 2rem;
  
  /* Transiciones */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

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

html {
  font-size: 100%; /* 16px base */
}

body {
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, #0a0e1a 0%, #1a1f2e 100%);
  color: var(--text-light);
  min-height: 100vh;
}


/* Versión simplificada (solo lo necesario para tu HTML original) */
footer {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-xl) var(--spacing-lg);
  background: rgba(30, 30, 47, 0.95);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius-md);
  border-top: 1px solid rgba(0, 181, 204, 0.2);
  text-align: center;
}

.footer-credit {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-sm);
}

.creator-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition-fast);
}

.creator-link:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.app-container {
  max-width: 87.5rem; /* 1400px */
  margin: 0 auto;
  padding: var(--spacing-lg);
}

/* ===== UTILITIES ===== */
.hidden {
  display: none;
}

/* ===== HEADER ===== */
.header {
  background: rgba(30, 30, 47, 0.95);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow);
  border: 1px solid rgba(0, 181, 204, 0.2);
}

.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  width: 100%;
}

.header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  text-align: center;
}

.header h1 span,
.header h1 i {
  color: var(--primary);
}

.seccion-header {
  margin-bottom: var(--spacing-xl);
}

.seccion-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1.25rem;
}


/* ===== NAVEGACIÓN ===== */
.main-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.view-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.nav-btn {
  background: transparent;
  border: 2px solid var(--bg-card);
  color: var(--text-gray);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 2.5rem;
  cursor: pointer;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  font-weight: 600;
}

.nav-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  box-shadow: 0 0.25rem 0.75rem rgba(76, 175, 80, 0.3);
}

.favorites-count {
  background: var(--favorite);
  color: white;
  border-radius: 1.25rem;
  padding: 0.125rem var(--spacing-sm);
  font-size: 0.75rem;
}

/* ===== VISTAS ===== */
.view {
  display: none;
  animation: fadeIn var(--transition-normal);
}

.view.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(0.625rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== FILTROS ===== */
.filters-section {
  margin-bottom: var(--spacing-xl);
}

.search-box {
  position: relative;
}

.search-box i {
  position: absolute;
  left: var(--spacing-lg);
  top: 50%;
  transform: translateY(-50%);
  color: #888;
}

.search-box input {
  width: 100%;
  padding: 0.875rem var(--spacing-lg) 0.875rem 3rem;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.3125rem;
  color: white;
  font-size: 0.85rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
}

.filter-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(7.5rem, 1fr));
  gap: 0.375rem;
  margin-top: var(--spacing-lg);
}

.filter-group select {
  min-width: 7.5rem;
  padding: 0.625rem 0.875rem;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.3125rem;
  color: var(--text-light);
  cursor: pointer;
  max-height: 3.0625rem;
}

/* ===== LOADING & ERROR ===== */
.loading-indicator {
  text-align: center;
  padding: var(--spacing-2xl);
}

.spinner {
  width: 3.125rem;
  height: 3.125rem;
  border: 0.25rem solid rgba(76, 175, 80, 0.2);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto var(--spacing-lg);
}

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

.error-message {
  background: rgba(244, 67, 54, 0.2);
  border: 1px solid #f44336;
  color: #ff8a80;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  text-align: center;
  margin: var(--spacing-lg) 0;
}

/* ===== GRID DE PERSONAJES ===== */
.characters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(10rem, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.character-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  border: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
}

.character-card:hover {
  transform: translateY(-0.25rem);
  box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.3);
  border-color: rgba(76, 175, 80, 0.3);
}

.character-img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.character-info {
  padding: var(--spacing-md);
}

.character-name {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.375rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.character-card .fav-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.6);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  transition: var(--transition-fast);
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
}

.character-card .fav-btn i {
  font-size: 1.2rem;
  color: white;
}

.fav-btn.active i {
  color: var(--favorite);
}

.character-status {
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.status-badge {
  width: var(--spacing-sm);
  height: var(--spacing-sm);
  border-radius: 50%;
  display: inline-block;
}

.status-alive {
  background: var(--primary);
}
.status-dead {
  background: var(--danger);
}
.status-unknown {
  background: var(--warning);
}

.character-species {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: var(--spacing-xs);
}

/* ===== EPISODIOS ===== */

.episodes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17.5rem, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.episode-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  cursor: pointer;
  transition: var(--transition-fast);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.episode-card:hover {
  background: rgba(76, 175, 80, 0.1);
  border-color: var(--primary);
}

.episode-name {
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
}

.episode-info {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* ===== PAGINACIÓN ===== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  flex-wrap: wrap;
}

.page-btn {
  background: var(--bg-card);
  border: none;
  color: var(--text-light);
  padding: 10px 20px;
  border-radius: 30px;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-btn:hover:not(:disabled) {
  background: var(--primary);
  color: white;
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-info {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== MODAL ===== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-overlay);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  padding: 1.25rem;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: linear-gradient(135deg, #1a1f2e 0%, #0f1420 100%);
  border-radius: var(--border-radius-xl);
  max-width: 37.5rem;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  border: 1px solid rgba(76, 175, 80, 0.3);
}

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: 1.25rem;
  font-size: 1.125rem;
  cursor: pointer;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.5);
  border-radius: 50%;
  width: 3.125rem;
  height: 3.125rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-body {
  padding: var(--spacing-xl);
  clear: both;
}

.character-detail {
  text-align: center;
}

.character-detail-img {
  width: 11.25rem;
  height: 11.25rem;
  border-radius: 50%;
  object-fit: cover;
  border: 0.1875rem solid var(--primary);
  margin: var(--spacing-lg);
}

.character-detail h2 {
  margin: var(--spacing-lg);
}

.character-detail .favorites-nav-btn {
  margin: 0 auto var(--spacing-lg) auto;
}

.detail-info {
  text-align: left;
  background: rgba(0, 0, 0, 0.3);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
}

.detail-info p {
  margin: var(--spacing-sm) 0;
}

.episodes-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.episode-tag {
  background: rgba(76, 175, 80, 0.2);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 1.25rem;
  font-size: 0.75rem;
}

/* ===== RESPONSIVE: TABLET (768px) ===== */
@media (min-width: 768px) {
  .app-container {
    padding: var(--spacing-xl);
  }

  .header-content {
    flex-direction: row;
    justify-content: space-between;
    flex-wrap: wrap;
  }

  .header h1 {
    font-size: 1.8rem;
    text-align: left;
    text-wrap: nowrap;
  }

  .main-nav {
    flex-direction: row;
  }

  .characters-grid {
    grid-template-columns: repeat(auto-fill, minmax(12.5rem, 1fr));
    gap: var(--spacing-xl);
  }
 
  .filter-group select {
    font-size: 1rem;
  }

  .page-btn {
    font-size: 1rem;
    padding: var(--spacing-md) 1.25rem;
  }

  .page-info {
    font-size: 1rem;
  }

  .search-box input {
    font-size: 1rem;
  }

  .episode-tag {
    font-size: 0.85rem;
  }
}

/* ===== RESPONSIVE: DESKTOP (1024px) ===== */
@media (min-width: 1024px) {
  .characters-grid {
    grid-template-columns: repeat(auto-fill, minmax(13.75rem, 1fr));
  }

  .filters-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: 0px;
  }

  .filter-group {
    grid-template-columns: 1fr 1fr;
    gap: 0.625rem;
    margin-top: 0px;
  }
}