/* Variables CSS */
:root {
  /* Colores principales */
  --color-primary: #10b981;
  --color-primary-dark: #059669;
  --color-secondary: #34d399;
  --color-accent: #6ee7b7;
  --color-warning: #fbbf24;
  --color-danger: #ef4444;
  --color-success: #10b981;

  /* Colores de fondo */
  --bg-primary: #0a0f0d;
  --bg-secondary: #111816;
  --bg-tertiary: #1a201e;
  --bg-card: #141a18;

  /* Colores de texto */
  --text-primary: #f0fdf4;
  --text-secondary: #d1fae5;
  --text-muted: #9ca3af;

  /* Bordes y sombras */
  --border-color: rgba(16, 185, 129, 0.2);
  --border-hover: rgba(16, 185, 129, 0.4);
  --shadow-small: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-large: 0 8px 24px rgba(0, 0, 0, 0.5);

  /* Transiciones */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* Tamaños */
  --border-radius: 8px;
  --border-radius-large: 12px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 14px;
  --spacing-xl: 22px;

  /* Scrollbar */
  scrollbar-width: thin;
  scrollbar-color: var(--color-primary) var(--bg-primary);
}

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

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

body {
  font-family: monospace, 'Courier New', Courier, monospace;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100dvh;
  overflow-x: hidden;
}

/* Scrollbar personalizado para WebKit */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-dark);
}

/* Loading screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 10000;
  transition: opacity var(--transition-normal);
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--border-color);
  border-top: 3px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Navegación */
.main-nav {
  background: rgba(17, 24, 22, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-normal);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
}

.nav-link {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-link:hover {
  color: var(--text-secondary);
  text-decoration: underline;
  transition: color var(--transition-fast);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Utilidades */
.hidden {
  display: none !important;
}

.fade-in {
  animation: fadeIn 0.5s ease-out forwards;
}

.fade-out {
  animation: fadeOut 0.3s ease-out forwards;
}

@keyframes fadeIn {
  from { 
    opacity: 0; 
    transform: translateY(10px); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0); 
  }
}

@keyframes fadeOut {
  from { 
    opacity: 1; 
    transform: translateY(0); 
  }
  to { 
    opacity: 0; 
    transform: translateY(-10px); 
  }
}

/* Contenedor principal */
.main-content {
  padding-top: var(--spacing-lg);
}

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

.view {
  min-height: 100%;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.section-header h2 {
  color: var(--color-primary);
  font-size: 1.8rem;
  font-weight: 600;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 4px 8px;
  border: none;
  border-radius: var(--border-radius);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
  min-height: 44px;
  background: transparent;
  color: var(--text-primary);
}

.btn-primary {
  background: var(--color-primary);
  color: #0a0f0d;
  font-weight: 600;
  border: 1px solid transparent;
  box-shadow: var(--shadow-small);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(16, 185, 129, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background: rgba(16, 185, 129, 0.1);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--color-danger);
  color: white;
  box-shadow: var(--shadow-small);
}

.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-2px);
}

.btn-success {
  background: var(--color-success);
  color: #0a0f0d;
  box-shadow: var(--shadow-small);
}

.btn-success:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn-admin {
  background: var(--color-secondary);
  color: #0a0f0d;
}

.btn-admin:hover {
  background: var(--color-accent);
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 8px;
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 40px;
  min-height: 40px;
}

.btn-icon:hover {
  background: rgba(16, 185, 129, 0.15);
  border-color: var(--border-hover);
  color: var(--color-primary);
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: color var(--transition-fast);
}

.btn-close:hover {
  color: var(--color-danger);
}

/* Filtros */
.filters-section {
  display: flex;
  justify-content: left;
  margin-bottom: var(--spacing-xl);
}

.filter-select {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 12px 20px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 1rem;
  min-width: 250px;
  appearance: none;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.filter-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

.filter-select:hover {
  border-color: var(--border-hover);
  background: var(--bg-tertiary);
}

/* Avisos */
.avisos-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.aviso-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-large);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-medium);
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.aviso-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  opacity: 0.7;
}

.aviso-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-large);
  border-color: var(--border-hover);
}

.aviso-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.4;
}

.aviso-card p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.aviso-meta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
  font-size: 0.9rem;
}

.meta-item {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.meta-published {
  color: var(--color-primary) !important;
  font-weight: 500;
}

.meta-expiration {
  color: var(--color-warning) !important;
  font-weight: 500;
}

.meta-expired {
  color: var(--color-danger) !important;
}

/* Colores por institución */
.aviso-card[data-institucion="ETSLP"]::before {
  background: #10b981;
}

.aviso-card[data-institucion="IEC"]::before {
  background: #34d399;
}

.aviso-card[data-institucion="ISBO"]::before {
  background: #6ee7b7;
}

.aviso-card[data-institucion="INET"]::before {
  background: #059669;
}

/* No content */
.no-content {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
}

.no-content-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.7;
}

.no-content h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .nav-container {
    padding: 0 var(--spacing-md);
    height: 60px;
  }
  
  .nav-title {
    font-size: 1.2rem;
  }
  
  .page-header h1 {
    font-size: 2rem;
  }
  
  .avisos-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .aviso-card {
    padding: var(--spacing-md);
  }
  
  .section-header {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
  
  .nav-actions {
    gap: var(--spacing-sm);
  }
  
  .btn {
    padding: 10px 16px;
    font-size: 0.9rem;
  }
  
  .filter-select {
    min-width: 200px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .nav-container {
    padding: 0 var(--spacing-sm);
  }
  
  .page-header h1 {
    font-size: 1.8rem;
  }
  
  .user-menu {
    gap: var(--spacing-xs);
  }
  
  .btn {
    padding: 8px 12px;
    font-size: 0.85rem;
  }
}