/* Variables */
:root {
  --primary-color: #4a6cf7;
  --primary-hover: #3a5ce5;
  --secondary-color: #6c757d;
  --dark-color: #343a40;
  --light-color: #f8f9fa;
  --danger-color: #dc3545;
  --success-color: #28a745;
  --border-radius: 8px;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
  --card-width: 225px;
  --card-height: 225px;
}

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

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--dark-color);
  background-color: #f5f7fa;
}

.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 15px;
}

/* Header */
header {
  background-color: white;
  box-shadow: var(--box-shadow);
  padding: 1rem 0;
  margin-bottom: 2rem;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-actions {
  display: flex;
  gap: 10px;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  gap: 8px;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

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

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

.btn-outline:hover {
  background-color: var(--secondary-color);
  color: white;
}

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

.btn-danger:hover {
  background-color: #bd2130;
}

.btn-success {
  background-color: var(--success-color);
  color: white;
}

.btn-success:hover {
  background-color: #218838;
}

/* Búsqueda y filtros */
.search-filter {
  margin-bottom: 2rem;
  background-color: white;
  padding: 1.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
}

.search-box {
  display: flex;
  margin-bottom: 1rem;
}

.search-box input {
  flex: 1;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius) 0 0 var(--border-radius);
  font-size: 1rem;
}

.search-box button {
  padding: 0.75rem 1rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  cursor: pointer;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.filter-group select {
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  font-size: 0.9rem;
}

/* Grid de apps */
.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--card-width), 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
  justify-content: center;
}

/* Tarjeta de app */
.app-card {
  width: var(--card-width);
  height: var(--card-height);
  background-color: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--box-shadow);
  position: relative;
  transition: var(--transition);
  margin: 0 auto;
}

.app-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.app-image {
  width: 100%;
  height: calc(100% - 70px);
  overflow: hidden;
}

.app-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.app-card:hover .app-image img {
  transform: scale(1.05);
}

.app-info-bar,
.app-link-bar {
  height: 35px;
  display: flex;
  align-items: center;
  padding: 0 0.75rem;
  background-color: white;
  transition: var(--transition);
}

.app-info-bar {
  justify-content: space-between;
  border-bottom: 1px solid #eee;
}

.app-link-bar {
  justify-content: center;
}

.app-link-bar a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  font-size: 0.85rem;
}

.app-link-bar a:hover {
  color: var(--primary-hover);
}

.info-toggle {
  background: none;
  border: none;
  color: var(--primary-color);
  cursor: pointer;
  font-size: 1.2rem;
  transition: var(--transition);
}

.info-toggle:hover {
  color: var(--primary-hover);
}

.app-info-bar h3 {
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Detalles de la app */
.app-details {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: calc(100% - 70px);
  background-color: rgba(255, 255, 255, 0.95);
  padding: 1rem;
  transform: translateY(-100%);
  transition: var(--transition);
  overflow-y: auto;
  z-index: 10;
  font-size: 0.85rem;
}

.app-card.show-details .app-details {
  transform: translateY(0);
}

.app-details h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.app-description {
  margin-bottom: 1rem;
  line-height: 1.6;
}

.app-tech,
.app-category {
  margin-bottom: 1rem;
}

.app-tech h4,
.app-category h4 {
  font-size: 0.9rem;
}

.tech-tags,
.category-tag {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.tech-tag,
.category-tag {
  background-color: #e9ecef;
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-size: 0.75rem;
}

.category-tag {
  background-color: #e3f2fd;
  color: #0d47a1;
}

.app-date {
  font-size: 0.85rem;
  color: var(--secondary-color);
}

/* Footer */
footer {
  background-color: white;
  padding: 1.5rem 0;
  text-align: center;
  margin-top: 2rem;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

/* Responsive */
@media (max-width: 768px) {
  :root {
    --card-width: 160px;
    --card-height: 160px;
  }

  .apps-grid {
    grid-template-columns: repeat(auto-fill, minmax(var(--card-width), 1fr));
    gap: 0.75rem;
  }

  .filters {
    flex-direction: column;
    align-items: stretch;
  }

  .filter-group {
    flex-direction: column;
    align-items: stretch;
  }

  .header-actions {
    flex-direction: column;
  }

  .app-info-bar h3,
  .app-link-bar a {
    font-size: 0.8rem;
  }
}

/* Estilos para el dashboard admin */
.admin-container {
  background-color: white;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 2rem;
  margin-bottom: 2rem;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.admin-nav {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
}

.admin-table th,
.admin-table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid #eee;
}

.admin-table th {
  background-color: #f8f9fa;
}

.admin-actions {
  display: flex;
  gap: 0.5rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  font-size: 1rem;
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 2rem;
}

/* Estilos para login */
.login-container {
  max-width: 400px;
  margin: 4rem auto;
}

.alert {
  padding: 1rem;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
}

.alert-danger {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.alert-success {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

/* Estilos para paginación */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin: 2rem 0;
}

.pagination a,
.pagination span {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  border-radius: var(--border-radius);
  text-decoration: none;
}

.pagination a {
  background-color: white;
  color: var(--primary-color);
  border: 1px solid #ddd;
}

.pagination a:hover {
  background-color: var(--primary-color);
  color: white;
}

.pagination span {
  background-color: var(--primary-color);
  color: white;
}