@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css');

:root {
  --bg-color: #fffbff;
  --bg-secondary: #f3edf7;
  --text-primary: #1c1b1f;
  --text-secondary: #49454f;
  --border-color: transparent;
  --accent-color: #6750a4;
  --accent-hover: #eaddff;
  --accent-text: #21005d;
  --success-color: #386a20;
  --card-hover: #ece6f0;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
}

.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.app-header {
  padding: 60px 0 40px;
  text-align: center;
  margin-bottom: 20px;
}

.header-top {
  text-align: left;
  margin-bottom: 20px;
}

.back-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 999px;
  background-color: var(--bg-secondary);
  transition: background-color 0.2s, box-shadow 0.2s, color 0.2s;
  display: inline-block;
}

.back-link:hover {
  background-color: var(--accent-hover);
  color: var(--accent-text);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.app-header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.app-header .subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

/* Search Bar */
.search-bar {
  max-width: 600px;
  margin: 0 auto 30px;
}

.search-bar input {
  width: 100%;
  padding: 16px 24px;
  font-size: 1rem;
  font-family: inherit;
  background-color: var(--bg-secondary);
  border: none;
  border-radius: 999px;
  color: var(--text-primary);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  transition: all 0.3s ease;
}

.search-bar input:focus {
  outline: none;
  background-color: #fffbff;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.search-options {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.filter-dropdown {
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid #cac4d0;
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
  transition: all 0.2s ease;
}

select.filter-dropdown {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2349454f' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 16px;
  padding-right: 44px;
}

.filter-dropdown:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(103, 80, 164, 0.15);
}



.action-btn {
  padding: 10px 24px;
  border-radius: 999px;
  border: none;
  background-color: var(--accent-color);
  color: #fff;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  transition: background-color 0.2s, box-shadow 0.2s, transform 0.1s;
}

.action-btn:hover {
  background-color: #553e8a;
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.action-btn:active {
  transform: translateY(2px);
}

/* Filters */
.category-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.filter-btn {
  background-color: var(--bg-color);
  border: 1px solid #cac4d0;
  color: var(--text-secondary);
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  background-color: var(--bg-secondary);
}

.filter-btn.active {
  background-color: var(--accent-hover);
  border: 1px solid var(--accent-hover);
  color: var(--accent-text);
}

/* Grid */
.repo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
}

/* Card */
.repo-card {
  background-color: var(--bg-secondary);
  border: none;
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
  transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1), box-shadow 0.2s cubic-bezier(0.2, 0, 0, 1), background-color 0.2s;
}

.repo-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  background-color: var(--card-hover);
}

.repo-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 12px;
}

.repo-name-link {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  word-break: break-all;
}

.repo-name-link:hover {
  color: var(--accent-color);
  text-decoration: underline;
}

.repo-owner {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.repo-stats {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-item svg {
  fill: var(--text-secondary);
}

.repo-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 8px;
  margin-bottom: 16px;
  background-color: #d3e3fd; /* softly tinted per M3 */
  color: #041e49;
}

.ai-badge {
  background-color: #ffd8e4; /* Material 3 Tertiary Container */
  color: #31111d; /* Material 3 On Tertiary Container */
  margin-left: 8px;
  font-weight: 700;
  border: 1px solid #ffd8e4;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.repo-desc {
  flex-grow: 1;
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 20px;
}

.repo-original-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-style: italic;
  padding-top: 16px;
  border-top: 1px solid #cac4d0;
}

.app-footer {
  text-align: center;
  padding: 40px 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Loading */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--accent-color);
  grid-column: 1 / -1;
  font-weight: 500;
}

/* No Results */
.no-results {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
  grid-column: 1 / -1;
  background: var(--bg-secondary);
  border-radius: 16px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

@media (max-width: 768px) {
  .repo-grid {
    grid-template-columns: 1fr;
  }
  .app-header h1 {
    font-size: 2rem;
  }
}