/* Explore Page Styles */

.explore-main {
  display: grid;
  grid-template-columns: 260px 1fr;
  max-width: 1600px;
  margin: 0 auto;
  min-height: calc(100vh - 200px);
}

/* Header Search */
.header-search {
  display: flex;
  flex: 1;
  max-width: 500px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.header-search-input {
  flex: 1;
  padding: 0.5rem 1rem;
  border: none;
  background: transparent;
  font-size: 0.875rem;
  outline: none;
}

.header-search-btn {
  padding: 0.5rem 0.75rem;
  background: transparent;
  border: none;
  color: var(--color-text-light);
  cursor: pointer;
  transition: var(--transition);
}

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

/* Filters Sidebar */
.filters-sidebar {
  padding: 1.5rem;
  border-right: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 60px;
  height: calc(100vh - 60px);
  overflow-y: auto;
}

.filter-section {
  margin-bottom: 1.5rem;
}

.filter-section h3 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.filter-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-light);
  cursor: pointer;
  transition: var(--transition);
}

.filter-option:hover {
  color: var(--color-text);
}

.filter-option input[type="radio"],
.filter-option input[type="checkbox"] {
  accent-color: var(--color-primary);
}

.filter-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-primary, #6366f1);
  border-radius: var(--radius-md, 8px);
  font-size: 1rem;
  font-weight: 500;
  background: white;
  cursor: pointer;
  color: var(--color-text, #1f2937);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  transition: all 0.2s ease;
}

.filter-select:hover {
  border-color: var(--color-primary-dark, #4f46e5);
  box-shadow: 0 4px 8px rgba(99, 102, 241, 0.2);
}

.filter-select:focus {
  outline: none;
  border-color: var(--color-primary-dark, #4f46e5);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Results Area */
.results-area {
  padding: 1.5rem;
}

.results-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.results-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
}

.results-count {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

/* Image Grid - Masonry-like */
.results-area .image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}

/* Load More */
.load-more {
  text-align: center;
  padding: 2rem;
}

/* Active nav state */
.main-nav a.active {
  color: var(--color-primary);
  font-weight: 500;
}

/* Mobile responsive */
@media (max-width: 900px) {
  .explore-main {
    grid-template-columns: 1fr;
  }

  .filters-sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    height: 100vh;
    z-index: 200;
    transition: left 0.3s ease;
  }

  .filters-sidebar.open {
    left: 0;
  }

  .filter-toggle {
    display: block;
  }
}

@media (max-width: 600px) {
  .header-search {
    display: none;
  }

  .results-area .image-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
  }

  /* モバイルタッチターゲット最小44x44px対応 */
  .filter-option {
    min-height: 44px;
    padding: 0.5rem 0;
  }

  .filter-option input[type="radio"],
  .filter-option input[type="checkbox"] {
    width: 20px;
    height: 20px;
    min-width: 44px;
    min-height: 44px;
  }

  .filter-select {
    min-height: 44px;
    padding: 0.75rem 1rem;
  }

  .header-search-btn {
    min-width: 44px;
    min-height: 44px;
    padding: 0.75rem;
  }

  .btn,
  .btn-outline {
    min-height: 44px;
    padding: 0.75rem 1.5rem;
  }
}