/* ===== ProjexHub - Explore Page Styles ===== */

/* Explore Hero Section */
.explore-hero {
  padding: var(--spacing-4xl) 0 var(--spacing-3xl);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
}

.hero-content {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: var(--font-black);
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.1;
}

.hero-content p {
  font-size: 1.5rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.4;
}

/* Search and Filters Container */
.search-filters-container {
  background: var(--bg-secondary);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-xl);
  max-width: 1000px;
  margin: 0 auto;
}

.search-section {
  margin-bottom: var(--spacing-xl);
}

.search-input-container {
  display: flex;
  align-items: center;
  background: var(--bg-primary);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-md) var(--spacing-lg);
  transition: all var(--transition-fast);
}

.search-input-container:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-icon {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--primary);
  margin-left: var(--spacing-md);
  flex-shrink: 0;
}

#exploreSearchInput {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 1.1rem;
  color: var(--text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
}

#exploreSearchInput::placeholder {
  color: var(--text-muted);
}

.search-btn {
  background: var(--gradient-primary);
  color: var(--text-inverse);
  border: none;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-weight: var(--font-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.search-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

/* Filters Section */
.filters-section {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
  flex-wrap: wrap;
}

.filter-group {
  flex: 1;
  min-width: 200px;
}

.filter-select {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: all var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: left 0.75rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-left: 3rem;
}

.filter-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.filter-reset-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background: transparent;
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: var(--font-medium);
  white-space: nowrap;
}

.filter-reset-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(37, 99, 235, 0.05);
}

.filter-reset-btn svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* Results Section */
.results-section {
  padding: var(--spacing-4xl) 0;
  background: var(--bg-primary);
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-3xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 2px solid var(--border-light);
}

.results-info h2 {
  font-size: 2.5rem;
  font-weight: var(--font-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

#resultsCount {
  color: var(--text-secondary);
  font-size: 1.1rem;
  font-weight: var(--font-medium);
}

.sort-options {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.sort-select {
  padding: var(--spacing-md) var(--spacing-lg);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: all var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
  background-position: left 0.75rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-left: 3rem;
  min-width: 180px;
}

.sort-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

.project-card {
  background: var(--bg-secondary);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-fast);
  cursor: pointer;
  position: relative;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-2xl);
  border-color: var(--primary);
}

.project-image {
  width: 100%;
  height: 200px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

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

.project-image-placeholder {
  width: 4rem;
  height: 4rem;
  color: var(--text-inverse);
  opacity: 0.7;
}

.project-badge {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: var(--gradient-primary);
  color: var(--text-inverse);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-semibold);
}

.project-content {
  padding: var(--spacing-xl);
}

.project-header {
  margin-bottom: var(--spacing-lg);
}

.project-title {
  font-size: 1.5rem;
  font-weight: var(--font-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.3;
}

.project-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

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

.meta-item svg {
  width: 1rem;
  height: 1rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.project-tag {
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-medium);
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.project-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.project-stats {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.stat-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  font-weight: var(--font-medium);
}

.stat-item svg {
  width: 1rem;
  height: 1rem;
}

.stat-item:hover {
  color: var(--primary);
}

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

.author-avatar {
  width: 2rem;
  height: 2rem;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-inverse);
  font-weight: var(--font-bold);
  font-size: var(--font-size-sm);
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}

.author-university {
  color: var(--text-muted);
  font-size: var(--font-size-xs);
}

/* View Project Button Styles */
.project-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-light);
}

.btn-view-project {
  flex: 1;
  background: var(--gradient-primary);
  color: var(--text-inverse);
  border: none;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  font-weight: var(--font-semibold);
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  position: relative;
  overflow: hidden;
}

.btn-view-project:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--text-inverse);
}

.btn-view-project:active {
  transform: translateY(0);
}

.btn-view-project svg {
  width: 1.25rem;
  height: 1.25rem;
  transition: transform var(--transition-fast);
}

.btn-view-project:hover svg {
  transform: translateX(-2px);
}

.btn-like-project {
  background: transparent;
  color: var(--text-secondary);
  border: 2px solid var(--border-light);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 50px;
}

.btn-like-project:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(37, 99, 235, 0.05);
}

/* إصلاح ألوان زر الإعجاب لاستخدام متغيرات CSS */
.btn-like-project.liked {
  border-color: var(--danger);
  color: var(--danger);
  background: rgba(239, 68, 68, 0.05);
}

.btn-like-project svg {
  width: 1.25rem;
  height: 1.25rem;
  transition: transform var(--transition-fast);
}

.btn-like-project:hover svg {
  transform: scale(1.1);
}

.btn-like-project.liked svg {
  fill: currentColor;
}

/* Load More Section */
.load-more-container {
  text-align: center;
  padding-top: var(--spacing-2xl);
}

.load-more-btn {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.1rem;
  font-weight: var(--font-semibold);
  min-width: 200px;
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-light);
}

.load-more-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(37, 99, 235, 0.05);
}

.load-more-btn svg {
  width: 1.25rem;
  height: 1.25rem;
  margin-left: var(--spacing-sm);
}

/* Loading States */
.loading-skeleton {
  background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--border-light) 50%, var(--bg-secondary) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton-card {
  background: var(--bg-secondary);
  border: 2px solid var(--border-light);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.skeleton-image {
  width: 100%;
  height: 200px;
  background: var(--border-light);
}

.skeleton-content {
  padding: var(--spacing-xl);
}

.skeleton-title {
  height: 1.5rem;
  background: var(--border-light);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
}

.skeleton-description {
  height: 1rem;
  background: var(--border-light);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-sm);
}

.skeleton-description:last-of-type {
  width: 70%;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-4xl) var(--spacing-lg);
}

.empty-state-icon {
  width: 5rem;
  height: 5rem;
  color: var(--text-muted);
  margin: 0 auto var(--spacing-xl);
}

.empty-state h3 {
  font-size: 1.5rem;
  font-weight: var(--font-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.empty-state p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-xl);
}

/* Filter Active States */
.filter-select.active {
  border-color: var(--primary);
  background: rgba(37, 99, 235, 0.05);
}

.filter-reset-btn.active {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(37, 99, 235, 0.05);
}

/* Project Card Hover Effects */
.project-card:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.filter-select:focus,
.sort-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Dark Theme Adjustments */
.dark-theme .filter-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%23ffffff' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
}

.dark-theme .sort-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%23ffffff' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
}

.dark-theme .project-card {
  background: var(--bg-secondary);
  border-color: var(--border-light);
}

.dark-theme .project-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-2xl);
}

.dark-theme .project-badge {
  background: var(--gradient-primary);
  color: var(--text-inverse);
}

.dark-theme .project-tag {
  background: rgba(37, 99, 235, 0.15);
  color: var(--primary);
  border-color: rgba(37, 99, 235, 0.3);
}

.dark-theme .btn-like-project {
  border-color: var(--border-light);
  color: var(--text-secondary);
}

.dark-theme .btn-like-project:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
}

.dark-theme .search-input-container {
  background: var(--bg-secondary);
  border-color: var(--border-light);
}

.dark-theme .search-input-container:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.dark-theme .filter-select,
.dark-theme .sort-select {
  background: var(--bg-secondary);
  border-color: var(--border-light);
  color: var(--text-primary);
}

.dark-theme .filter-select:focus,
.dark-theme .sort-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.dark-theme .filter-reset-btn {
  border-color: var(--border-light);
  color: var(--text-secondary);
}

.dark-theme .filter-reset-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(37, 99, 235, 0.1);
}

/* Light Theme Adjustments */
.light-theme .search-input-container:focus-within {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.light-theme .filter-select:focus,
.light-theme .sort-select:focus {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.light-theme .project-card:hover {
  box-shadow: var(--shadow-2xl);
}

.light-theme .project-tag {
  background: rgba(37, 99, 235, 0.1);
  border-color: rgba(37, 99, 235, 0.2);
}

.light-theme .btn-like-project:hover {
  background: rgba(37, 99, 235, 0.05);
}

.light-theme .filter-reset-btn:hover {
  background: rgba(37, 99, 235, 0.05);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2.5rem;
  }

  .hero-content p {
    font-size: 1.25rem;
  }

  .search-filters-container {
    padding: var(--spacing-xl);
  }

  .search-input-container {
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
  }

  .search-btn {
    width: 100%;
  }

  .filters-section {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .filter-group {
    min-width: auto;
  }

  .results-header {
    flex-direction: column;
    gap: var(--spacing-lg);
    align-items: flex-start;
  }

  .sort-options {
    width: 100%;
  }

  .sort-select {
    width: 100%;
    min-width: auto;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .project-meta {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .project-footer {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-content p {
    font-size: 1.1rem;
  }

  .search-filters-container {
    padding: var(--spacing-lg);
  }

  .results-info h2 {
    font-size: 2rem;
  }

  .project-content {
    padding: var(--spacing-lg);
  }

  .project-title {
    font-size: 1.25rem;
  }
}

/* Print Styles */
@media print {
  .navbar,
  .footer,
  .search-filters-container,
  .load-more-container {
    display: none;
  }

  .project-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid var(--border-light);
  }

  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
}