/* ===== CSS VARIABLES - Dark / Light Theme ===== */
:root[data-theme="dark"] {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #1c2128;
  --bg-hover: #21262d;
  --border: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent: #238636;
  --accent-hover: #2ea043;
  --accent-blue: #1f6feb;
  --accent-blue-hover: #388bfd;
  --star-color: #e3b341;
  --tag-bg: #21262d;
  --tag-text: #79c0ff;
  --danger: #da3633;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

:root[data-theme="light"] {
  --bg-primary: #f6f8fa;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-hover: #f3f4f6;
  --border: #d0d7de;
  --text-primary: #1f2328;
  --text-secondary: #656d76;
  --text-muted: #9198a1;
  --accent: #1a7f37;
  --accent-hover: #1f8c3b;
  --accent-blue: #0969da;
  --accent-blue-hover: #0550ae;
  --star-color: #9a6700;
  --tag-bg: #ddf4ff;
  --tag-text: #0550ae;
  --danger: #cf222e;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
}

/* ===== RESET ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  transition:
    background-color 0.3s,
    color 0.3s;
  line-height: 1.6;
}

/* ===== NAVBAR ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 60px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.nav-brand i {
  font-size: 22px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.bookmarks-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  background: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
}

.bookmarks-btn:hover {
  opacity: 0.8;
}

.bookmark-count {
  background: var(--accent-blue);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 20px;
  min-width: 18px;
  text-align: center;
}

.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.theme-toggle:hover {
  background: var(--bg-hover);
}

/* ===== HERO ===== */
.hero {
  text-align: center;
  padding: 60px 24px 40px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: clamp(24px, 4vw, 42px);
  font-weight: 800;
  margin-bottom: 12px;
  background: linear-gradient(
    135deg,
    var(--text-primary),
    var(--text-secondary)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

/* ===== SEARCH ===== */
.search-wrapper {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 15px;
}

.search-input {
  width: 100%;
  padding: 14px 48px;
  font-size: 15px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text-primary);
  outline: none;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}

.search-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(31, 111, 235, 0.15);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.clear-btn {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  padding: 4px;
  border-radius: 4px;
  display: none;
  transition: color 0.2s;
}

.clear-btn:hover {
  color: var(--text-primary);
}
.clear-btn.visible {
  display: flex;
}

/* ===== CONTAINER ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 24px;
}

/* ===== CONTROLS BAR ===== */
.controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.results-info {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}

.controls-right {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.select-control {
  padding: 8px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b949e' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 30px;
}

.select-control:focus {
  border-color: var(--accent-blue);
}

/* ===== BOOKMARKS PANEL ===== */
.bookmarks-panel {
  display: none;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 24px;
}

.bookmarks-panel.open {
  display: block;
}

.bookmarks-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.bookmarks-header h3 {
  font-size: 16px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--tag-text);
}

.clear-bookmarks-btn {
  padding: 5px 12px;
  background: none;
  border: 1px solid var(--danger);
  color: var(--danger);
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}

.clear-bookmarks-btn:hover {
  background: var(--danger);
  color: #fff;
}

.bookmarks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}

.empty-bookmarks {
  color: var(--text-muted);
  font-size: 14px;
  grid-column: 1 / -1;
  text-align: center;
  padding: 20px;
}

/* ===== REPO GRID ===== */
.repo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 18px;
}

/* ===== REPO CARD ===== */
.repo-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition:
    transform 0.2s,
    box-shadow 0.2s,
    border-color 0.2s;
  cursor: pointer;
}

.repo-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--accent-blue);
}

.repo-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.repo-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--border);
  flex-shrink: 0;
}

.repo-title-wrap {
  flex: 1;
  min-width: 0;
}

.repo-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-blue);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-decoration: none;
  display: block;
}

.repo-name:hover {
  text-decoration: underline;
}

.repo-owner {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bookmark-icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 16px;
  padding: 4px 6px;
  border-radius: 6px;
  transition:
    color 0.2s,
    transform 0.2s;
  flex-shrink: 0;
}

.bookmark-icon-btn:hover {
  transform: scale(1.2);
}
.bookmark-icon-btn.bookmarked {
  color: var(--accent-blue);
}

.repo-description {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.repo-footer {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: auto;
}

.repo-stat {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--text-secondary);
}

.repo-stat .fa-star {
  color: var(--star-color);
}
.repo-stat .fa-code-fork {
  color: var(--text-muted);
}

.lang-badge {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--text-secondary);
  margin-left: auto;
}

.lang-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-blue);
  flex-shrink: 0;
}

/* Language colors */
.lang-JavaScript {
  background: #f1e05a;
}
.lang-Python {
  background: #3572a5;
}
.lang-TypeScript {
  background: #2b7489;
}
.lang-Java {
  background: #b07219;
}
.lang-C {
  background: #555555;
}
.lang-Cpp {
  background: #f34b7d;
}
.lang-Rust {
  background: #dea584;
}
.lang-Go {
  background: #00add8;
}
.lang-PHP {
  background: #4f5d95;
}
.lang-Swift {
  background: #f05138;
}
.lang-Kotlin {
  background: #a97bff;
}
.lang-Ruby {
  background: #701516;
}

/* ===== SKELETON LOADING ===== */
@keyframes shimmer {
  0% {
    background-position: -600px 0;
  }
  100% {
    background-position: 600px 0;
  }
}

.skeleton-card {
  height: 180px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: linear-gradient(
    90deg,
    var(--bg-card) 25%,
    var(--bg-hover) 50%,
    var(--bg-card) 75%
  );
  background-size: 600px 100%;
  animation: shimmer 1.5s infinite linear;
}

/* ===== NO RESULTS ===== */
.no-results {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-secondary);
}

.no-results i {
  font-size: 48px;
  margin-bottom: 16px;
  color: var(--text-muted);
}
.no-results h3 {
  font-size: 20px;
  margin-bottom: 8px;
}
.no-results p {
  font-size: 14px;
}

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
}

.page-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.page-btn:hover:not(:disabled) {
  background: var(--accent-blue);
  color: #fff;
  border-color: var(--accent-blue);
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-info {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  min-width: 60px;
  text-align: center;
}

/* ===== FOOTER ===== */
.footer {
  text-align: center;
  padding: 24px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
}

.footer .fa-heart {
  color: var(--danger);
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .navbar {
    padding: 0 16px;
  }
  .nav-brand span {
    display: none;
  }
  .bookmarks-btn span:not(.bookmark-count) {
    display: none;
  }
  .hero {
    padding: 40px 16px 28px;
  }
  .container {
    padding: 20px 16px;
  }
  .controls-bar {
    flex-direction: column;
    align-items: flex-start;
  }
  .controls-right {
    width: 100%;
  }
  .select-control {
    flex: 1;
  }
  .repo-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 22px;
  }
  .pagination {
    gap: 10px;
  }
  .page-btn {
    padding: 8px 14px;
    font-size: 13px;
  }
}