/* ===== Design tokens — macOS inspired ===== */
:root {
  --accent: #0a84ff;
  --accent-2: #5e5ce6;
  --bg: #eef0f3;
  --bg-elev: rgba(255, 255, 255, 0.72);
  --bg-elev-solid: #ffffff;
  --sidebar-bg: rgba(246, 247, 249, 0.8);
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --border: rgba(0, 0, 0, 0.08);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 2px 6px rgba(0, 0, 0, 0.06), 0 16px 32px rgba(0, 0, 0, 0.1);
  --radius: 16px;
  --radius-sm: 10px;
  --titlebar-h: 44px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

[data-theme="dark"] {
  --bg: #1c1c1e;
  --bg-elev: rgba(44, 44, 46, 0.7);
  --bg-elev-solid: #2c2c2e;
  --sidebar-bg: rgba(28, 28, 30, 0.75);
  --text: #f5f5f7;
  --text-secondary: #98989d;
  --border: rgba(255, 255, 255, 0.09);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 2px 6px rgba(0, 0, 0, 0.35), 0 16px 32px rgba(0, 0, 0, 0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1c1c1e;
    --bg-elev: rgba(44, 44, 46, 0.7);
    --bg-elev-solid: #2c2c2e;
    --sidebar-bg: rgba(28, 28, 30, 0.75);
    --text: #f5f5f7;
    --text-secondary: #98989d;
    --border: rgba(255, 255, 255, 0.09);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-hover: 0 2px 6px rgba(0, 0, 0, 0.35), 0 16px 32px rgba(0, 0, 0, 0.45);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* ===== Fake window titlebar ===== */
.titlebar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--titlebar-h);
  display: flex;
  align-items: center;
  padding: 0 16px;
  background: var(--bg-elev);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

.traffic-lights { display: flex; gap: 8px; flex: 0 0 auto; }
.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.titlebar-title {
  flex: 1;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.titlebar-actions { display: flex; gap: 6px; flex: 0 0 auto; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.icon-btn:hover { background: var(--border); color: var(--text); }

/* ===== Hero ===== */
.hero {
  text-align: center;
  padding: 48px 20px 28px;
  max-width: 760px;
  margin: 0 auto;
}

.hero-icon {
  display: block;
  width: 100%;
  max-width: 340px;
  height: auto;
  margin: 0 auto 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.tagline {
  color: var(--text-secondary);
  font-size: 16px;
  margin: 0 0 24px;
}

.stats-row {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.stat-pill {
  background: var(--bg-elev-solid);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 18px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
}
.stat-pill strong { font-size: 16px; color: var(--text); }

.search-wrap {
  position: relative;
  max-width: 480px;
  margin: 0 auto 20px;
}
.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  pointer-events: none;
}
#search {
  width: 100%;
  padding: 12px 40px 12px 42px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-elev-solid);
  color: var(--text);
  font-size: 15px;
  box-shadow: var(--shadow);
  outline: none;
  transition: box-shadow 0.15s ease;
}
#search:focus { box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 30%, transparent), var(--shadow); }
/* remove native decorations so only our custom clear button shows */
#search::-webkit-search-cancel-button,
#search::-webkit-search-decoration { -webkit-appearance: none; appearance: none; }
#search::-ms-clear { display: none; }
.search-clear {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 14px;
  padding: 4px 6px;
}
.search-kbd {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font: 11px var(--font);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  pointer-events: none;
}
#search:focus ~ .search-kbd,
#search:not(:placeholder-shown) ~ .search-kbd { display: none; }

.quicklinks {
  display: flex;
  justify-content: center;
  gap: 20px;
  font-size: 13px;
}
.quicklinks a { color: var(--accent); text-decoration: none; }
.quicklinks a:hover { text-decoration: underline; }

/* ===== Layout ===== */
.layout {
  display: flex;
  align-items: flex-start;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px 60px;
  gap: 24px;
}

.sidebar {
  flex: 0 0 240px;
  position: sticky;
  top: calc(var(--titlebar-h) + 16px);
  max-height: calc(100vh - var(--titlebar-h) - 32px);
  overflow-y: auto;
  background: var(--sidebar-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

#category-nav { display: flex; flex-direction: column; gap: 2px; }

.cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 13.5px;
  text-align: left;
  cursor: pointer;
  width: 100%;
  font-family: inherit;
}
.cat-item:hover { background: var(--border); }
.cat-item.active { background: var(--accent); color: #fff; }
.cat-item.child { padding-left: 24px; font-size: 13px; }
.cat-item .count {
  font-size: 11px;
  color: var(--text-secondary);
  background: var(--border);
  border-radius: 999px;
  padding: 1px 7px;
  flex: 0 0 auto;
}
.cat-item.active .count { background: rgba(255, 255, 255, 0.25); color: #fff; }
.cat-group-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  padding: 12px 10px 4px;
}

main { flex: 1 1 auto; min-width: 0; }

.active-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 6px 5px 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
  font-size: 12.5px;
  font-weight: 500;
}
.filter-chip button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  font-size: 12px;
  line-height: 1;
}
.filter-chip button:hover { background: color-mix(in srgb, var(--accent) 25%, transparent); }

.clear-all-chip {
  font-size: 12.5px;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 12px;
  cursor: pointer;
}
.clear-all-chip:hover { background: var(--border); }

.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.lang-filter {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  flex: 1 1 auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}

.lang-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elev-solid);
  color: var(--text-secondary);
  font-size: 12.5px;
  cursor: pointer;
  white-space: nowrap;
  flex: 0 0 auto;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.lang-chip img { width: 14px; height: 14px; object-fit: contain; }
.lang-chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.lang-more-btn {
  flex: 0 0 auto;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px dashed var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-size: 12.5px;
  cursor: pointer;
  white-space: nowrap;
}
.lang-more-btn:hover { background: var(--border); }

.toolbar-right { flex: 0 0 auto; margin-left: auto; display: flex; align-items: center; gap: 8px; }
.sort-label { font-size: 12.5px; color: var(--text-secondary); }
.sort-select {
  font-size: 12.5px;
  padding: 5px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elev-solid);
  color: var(--text);
}
.result-count { font-size: 13px; color: var(--text-secondary); white-space: nowrap; }

/* ===== App grid & cards ===== */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.app-card {
  background: var(--bg-elev-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  animation: cardIn 0.25s ease both;
}
.app-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
@keyframes cardIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .app-card { animation: none; }
}

.app-card-head { display: flex; align-items: center; gap: 12px; }
.app-icon {
  width: 44px;
  height: 44px;
  border-radius: 22%;
  object-fit: cover;
  background: var(--border);
  flex: 0 0 auto;
}
.app-icon-fallback {
  width: 44px;
  height: 44px;
  border-radius: 22%;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 600;
  color: #fff;
}
.app-title { font-size: 15px; font-weight: 600; margin: 0; }
.app-title a { color: var(--text); text-decoration: none; }
.app-title a:hover { color: var(--accent); }

.app-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.45;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.app-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--border);
  color: var(--text-secondary);
}
.tag.lang { display: inline-flex; align-items: center; gap: 4px; }
.tag.lang img { width: 12px; height: 12px; }

.app-links { display: flex; gap: 8px; margin-top: auto; padding-top: 4px; }
.app-links a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  transition: background-color 0.15s ease;
}
.app-links a:hover { background: var(--border); }
.app-links svg { width: 13px; height: 13px; }

/* ===== Empty / loading states ===== */
.empty-state, .loading {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}
.reset-btn {
  margin-top: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elev-solid);
  color: var(--text);
  cursor: pointer;
}
.spinner {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  margin: 0 auto 12px;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Scroll to top ===== */
.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-elev-solid);
  color: var(--text);
  box-shadow: var(--shadow-hover);
  cursor: pointer;
  font-size: 18px;
  z-index: 40;
}

/* ===== Footer ===== */
.site-footer {
  text-align: center;
  padding: 24px 20px 48px;
  color: var(--text-secondary);
  font-size: 12.5px;
}
.site-footer a { color: var(--accent); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .layout { flex-direction: column; align-items: stretch; }
  .sidebar {
    position: static;
    flex: 1 1 auto;
    width: 100%;
    max-height: none;
    overflow: visible;
  }
  #category-nav { flex-direction: row; flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; }
  .cat-item { flex: 0 0 auto; }
  .cat-item.child { padding-left: 10px; }
  .cat-group-label { display: none; }
  main { width: 100%; min-width: 0; }
  .app-grid { grid-template-columns: 1fr; }
}