/* fonts: Syne · JetBrains Mono · Noto Sans SC — all self-hosted via fonts.css */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
a { text-decoration: none; color: inherit; }
svg { display: block; flex-shrink: 0; }
ul, ol { list-style: none; }

:root {
  color-scheme: dark;
  --bg:         #121212;
  --bg-rgb:     18, 18, 18;
  --surface:    #1e1e1e;
  --surface-2:  #272727;
  --surface-3:  #323232;
  --border:     rgba(255, 255, 255, 0.12);
  --border-hi:  rgba(255, 255, 255, 0.24);
  --fg:         #e6e1e5;
  --fg-2:       #cac4d0;
  --fg-3:       #79747e;
  --accent:     #2dd4bf;
  --accent-rgb: 45, 212, 191;
  --accent-dim: rgba(45, 212, 191, 0.15);
  --accent-glow: rgba(45, 212, 191, 0.18);
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.35);
  --shadow:     0 2px 8px rgba(0,0,0,0.30), 0 1px 2px rgba(0,0,0,0.35);
  --shadow-lg:  0 8px 28px rgba(0,0,0,0.40), 0 2px 6px rgba(0,0,0,0.30);
  --radius:     12px;
  --radius-sm:  8px;
  --radius-xs:  6px;
  --font-ui:    'Syne', 'Noto Sans SC', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', 'Noto Sans SC', 'Cascadia Code', 'Fira Code', monospace;
  --ease:       cubic-bezier(0.4, 0, 0.2, 1);
  --dur:        180ms;
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg:         #eeeef2;
    --bg-rgb:     238, 238, 242;
    --surface:    #ffffff;
    --surface-2:  #f4f4f8;
    --surface-3:  #e8e8ee;
    --border:     rgba(0, 0, 0, 0.07);
    --border-hi:  rgba(0, 0, 0, 0.14);
    --fg:         #16161e;
    --fg-2:       #5a5a6e;
    --fg-3:       #9898aa;
    --accent:     #0d9488;
    --accent-rgb: 13, 148, 136;
    --accent-dim: rgba(13, 148, 136, 0.1);
    --accent-glow: rgba(13, 148, 136, 0.14);
    --shadow-sm:  0 1px 2px rgba(0,0,0,0.06);
    --shadow:     0 2px 8px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
    --shadow-lg:  0 8px 28px rgba(0,0,0,0.1), 0 2px 6px rgba(0,0,0,0.06);
  }
}

/* data-theme attribute overrides — beat the media query via higher specificity */
:root[data-theme="light"] {
  color-scheme: light;
  --bg:         #eeeef2;
  --bg-rgb:     238, 238, 242;
  --surface:    #ffffff;
  --surface-2:  #f4f4f8;
  --surface-3:  #e8e8ee;
  --border:     rgba(0, 0, 0, 0.07);
  --border-hi:  rgba(0, 0, 0, 0.14);
  --fg:         #16161e;
  --fg-2:       #5a5a6e;
  --fg-3:       #9898aa;
  --accent:     #0d9488;
  --accent-rgb: 13, 148, 136;
  --accent-dim: rgba(13, 148, 136, 0.1);
  --accent-glow: rgba(13, 148, 136, 0.14);
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.06);
  --shadow:     0 2px 8px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.05);
  --shadow-lg:  0 8px 28px rgba(0,0,0,0.1), 0 2px 6px rgba(0,0,0,0.06);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg:         #121212;
  --bg-rgb:     18, 18, 18;
  --surface:    #1e1e1e;
  --surface-2:  #272727;
  --surface-3:  #323232;
  --border:     rgba(255, 255, 255, 0.12);
  --border-hi:  rgba(255, 255, 255, 0.24);
  --fg:         #e6e1e5;
  --fg-2:       #cac4d0;
  --fg-3:       #79747e;
  --accent:     #2dd4bf;
  --accent-rgb: 45, 212, 191;
  --accent-dim: rgba(45, 212, 191, 0.15);
  --accent-glow: rgba(45, 212, 191, 0.18);
  --shadow-sm:  0 1px 2px rgba(0,0,0,0.35);
  --shadow:     0 2px 8px rgba(0,0,0,0.30), 0 1px 2px rgba(0,0,0,0.35);
  --shadow-lg:  0 8px 28px rgba(0,0,0,0.40), 0 2px 6px rgba(0,0,0,0.30);
}

html { font-size: 16px; height: 100%; }

body {
  font-family: var(--font-mono);
  font-size: 14px;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;  /* clip the slightly-oversized animated SVG */
  color: var(--fg);  /* currentColor on the dot <g> inherits this */
}

header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  padding: 0 28px;
  height: 58px;
  background: rgba(var(--bg-rgb), 0.82);
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  border-bottom: 1px solid var(--border);
  transition: background var(--dur) var(--ease);
}

.logo {
  display: flex;
  align-items: center;
  gap: 9px;
  flex-shrink: 0;
  user-select: none;
  text-decoration: none;
}
.logo-glyph { font-size: 20px; color: var(--accent); line-height: 1; letter-spacing: -0.02em; }
.logo-name {
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg);
}

.header-right { display: flex; align-items: center; gap: 8px; margin-left: auto; min-width: 0; }

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  color: var(--fg-2);
  background: transparent;
  transition:
    border-color var(--dur) var(--ease),
    color        var(--dur) var(--ease),
    background   var(--dur) var(--ease),
    transform    100ms      var(--ease);
}
.theme-toggle:hover { border-color: var(--border-hi); color: var(--accent); background: var(--surface-2); }
.theme-toggle:active { transform: scale(0.9); transition-duration: 60ms; }

.search-area { position: relative; width: min(400px, 100%); }

.search-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  padding: 5px 10px 5px 12px;
  min-height: 38px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 99px;
  cursor: text;
  transition:
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.search-bar:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.search-icon { color: var(--fg-3); display: flex; align-items: center; flex-shrink: 0; margin-right: 2px; }

/* display:contents lets chips flow as direct flex children of .search-bar */
.filter-tags { display: contents; }

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 7px 2px 9px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 500;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  background: hsla(var(--tag-h), 60%, 50%, 0.2);
  color: hsl(var(--tag-h), 60%, 72%);
  border: 1px solid hsla(var(--tag-h), 60%, 50%, 0.35);
  white-space: nowrap;
  user-select: none;
  cursor: default;
  animation: chip-in 150ms var(--ease) both;
}
@keyframes chip-in {
  from { opacity: 0; transform: scale(0.85); }
  to   { opacity: 1; transform: scale(1); }
}
@media (prefers-color-scheme: light) {
  .filter-chip { background: hsla(var(--tag-h), 60%, 45%, 0.1); color: hsl(var(--tag-h), 70%, 28%); border-color: hsla(var(--tag-h), 60%, 45%, 0.28); }
}
:root[data-theme="light"] .filter-chip { background: hsla(var(--tag-h), 60%, 45%, 0.1); color: hsl(var(--tag-h), 70%, 28%); border-color: hsla(var(--tag-h), 60%, 45%, 0.28); }
:root[data-theme="dark"]  .filter-chip { background: hsla(var(--tag-h), 60%, 50%, 0.2); color: hsl(var(--tag-h), 60%, 72%);  border-color: hsla(var(--tag-h), 60%, 50%, 0.35); }

.chip-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  color: currentColor;
  opacity: 0.6;
  transition: opacity var(--dur);
  flex-shrink: 0;
}
.chip-remove:hover { opacity: 1; }

.search-input {
  flex: 1;
  min-width: 80px;
  border: none;
  outline: none;
  background: transparent;
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 0 2px;
  caret-color: var(--accent);
}
.search-input::placeholder { color: var(--fg-3); }

.clear-btn { display: flex; align-items: center; justify-content: center; width: 18px; height: 18px; border-radius: 50%; color: var(--fg-3); flex-shrink: 0; transition: color var(--dur); }
.clear-btn:hover { color: var(--fg); }

.search-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  z-index: 200;
  opacity: 0;
  transform: translateY(-6px) scale(0.97);
  pointer-events: none;
  transition:
    opacity var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}
.search-dropdown.open { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }

.dd-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  cursor: pointer;
  color: var(--fg-2);
  font-size: 13px;
  transition: background var(--dur);
  user-select: none;
}
.dd-item:hover,
.dd-item.active { background: var(--surface-2); color: var(--fg); }
.dd-item svg { opacity: 0.45; flex-shrink: 0; }
.dd-item.active svg { opacity: 0.7; }

.dd-tag {
  padding: 1px 8px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 500;
  font-family: var(--font-mono);
  background: hsla(var(--tag-h), 60%, 50%, 0.16);
  color: hsl(var(--tag-h), 58%, 70%);
  border: 1px solid hsla(var(--tag-h), 60%, 50%, 0.3);
}
@media (prefers-color-scheme: light) {
  .dd-tag { background: hsla(var(--tag-h), 60%, 45%, 0.1); color: hsl(var(--tag-h), 70%, 28%); border-color: hsla(var(--tag-h), 60%, 45%, 0.25); }
}
:root[data-theme="light"] .dd-tag { background: hsla(var(--tag-h), 60%, 45%, 0.1); color: hsl(var(--tag-h), 70%, 28%); border-color: hsla(var(--tag-h), 60%, 45%, 0.25); }
:root[data-theme="dark"]  .dd-tag { background: hsla(var(--tag-h), 60%, 50%, 0.16); color: hsl(var(--tag-h), 58%, 70%); border-color: hsla(var(--tag-h), 60%, 50%, 0.3); }

.dd-hint { margin-left: auto; font-size: 10px; letter-spacing: 0.05em; color: var(--fg-3); opacity: 0; transition: opacity var(--dur); }
.dd-item.active .dd-hint { opacity: 1; }

main { position: relative; z-index: 1; max-width: 1120px; margin: 0 auto; padding: 40px 28px 72px; }

.group { margin-bottom: 44px; }
.group:last-child { margin-bottom: 0; }

.group-header { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.group-label {
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: hsl(var(--tag-h), 60%, 66%);
}
@media (prefers-color-scheme: light) {
  .group-label { color: hsl(var(--tag-h), 65%, 32%); }
}
:root[data-theme="light"] .group-label { color: hsl(var(--tag-h), 65%, 32%); }
:root[data-theme="dark"]  .group-label { color: hsl(var(--tag-h), 60%, 66%); }

.group-count { font-size: 10px; color: var(--fg-3); font-weight: 400; letter-spacing: 0.02em; }

.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 12px; }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  outline: none;
  -webkit-tap-highlight-color: transparent;
  transition:
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); border-color: var(--border-hi); background: var(--surface-2); }
.card:focus-visible { box-shadow: 0 0 0 2px var(--accent); border-color: var(--accent); outline: none; }
.card:active { transform: translateY(0); transition-duration: 60ms; }

.card-top { display: flex; align-items: flex-start; gap: 11px; }
.card-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  border-radius: 9px;
  background: var(--surface-3);
  border: 1px solid var(--border);
  color: var(--fg-2);
  margin-top: 1px;
  transition: color var(--dur), background var(--dur);
}
.card:hover .card-icon-wrap { color: var(--accent); background: var(--accent-dim); border-color: rgba(var(--accent-rgb), 0.25); }
.card-info { flex: 1; min-width: 0; }
.card-name { font-family: var(--font-ui); font-weight: 600; font-size: 14px; color: var(--fg); line-height: 1.3; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card-domain { font-size: 11px; color: var(--fg-3); margin-top: 3px; font-weight: 300; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-style: italic; }
.card-desc { font-size: 12px; color: var(--fg-2); line-height: 1.6; font-weight: 300; font-style: italic; border-top: 1px solid var(--border); padding-top: 9px; margin-top: -1px; }
.card-tags { display: flex; flex-wrap: wrap; gap: 5px; }

.tag {
  display: inline-flex;
  align-items: center;
  padding: 1px 7px;
  border-radius: 99px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  background: hsla(var(--tag-h), 62%, 50%, 0.13);
  color: hsl(var(--tag-h), 55%, 68%);
  border: 1px solid hsla(var(--tag-h), 62%, 50%, 0.24);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: background var(--dur), transform 100ms var(--ease);
}
.tag:hover { background: hsla(var(--tag-h), 62%, 50%, 0.24); transform: scale(1.06); }
@media (prefers-color-scheme: light) {
  .tag { background: hsla(var(--tag-h), 65%, 48%, 0.1); color: hsl(var(--tag-h), 68%, 26%); border-color: hsla(var(--tag-h), 65%, 48%, 0.22); }
  .tag:hover { background: hsla(var(--tag-h), 65%, 48%, 0.2); }
}
:root[data-theme="light"] .tag       { background: hsla(var(--tag-h), 65%, 48%, 0.1); color: hsl(var(--tag-h), 68%, 26%); border-color: hsla(var(--tag-h), 65%, 48%, 0.22); }
:root[data-theme="light"] .tag:hover { background: hsla(var(--tag-h), 65%, 48%, 0.2); }
:root[data-theme="dark"]  .tag       { background: hsla(var(--tag-h), 62%, 50%, 0.13); color: hsl(var(--tag-h), 55%, 68%); border-color: hsla(var(--tag-h), 62%, 50%, 0.24); }
:root[data-theme="dark"]  .tag:hover { background: hsla(var(--tag-h), 62%, 50%, 0.24); }

.alt-wrapper { position: relative; flex-shrink: 0; }
.alt-toggle {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 5px 7px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  color: var(--fg-3);
  background: transparent;
  transition: border-color var(--dur), color var(--dur), background var(--dur);
}
.alt-toggle:hover,
.alt-toggle.active { border-color: var(--border-hi); color: var(--fg-2); background: var(--surface-3); }
/* rotate chevron when open */
.alt-toggle.active .alt-chevron { transform: rotate(180deg); }
.alt-chevron { transition: transform var(--dur) var(--ease); }

.alt-menu {
  position: absolute;
  top: calc(100% + 5px);
  right: 0;
  min-width: 230px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 200;
  opacity: 0;
  transform: translateY(-5px) scale(0.97);
  pointer-events: none;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.alt-menu.open { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.alt-menu-label { padding: 7px 13px 5px; font-size: 10px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-3); border-bottom: 1px solid var(--border); font-family: var(--font-ui); }
.alt-item { display: flex; align-items: center; gap: 8px; padding: 9px 13px; font-size: 12px; color: var(--fg-2); transition: background var(--dur), color var(--dur); }
.alt-item:hover { background: var(--surface-2); color: var(--fg); }
.alt-item svg { color: var(--fg-3); flex-shrink: 0; transition: color var(--dur); }
.alt-item:hover svg { color: var(--accent); }
.alt-item span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 300; font-style: italic; }

.empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 220px; color: var(--fg-3); font-size: 13px; text-align: center; gap: 8px; letter-spacing: 0.02em; }
.empty-state svg { opacity: 0.3; margin-bottom: 4px; }
.error-state { padding: 24px; text-align: center; color: #f87171; font-size: 13px; }

footer { position: relative; z-index: 1; text-align: center; padding: 24px 28px 32px; border-top: 1px solid var(--border); color: var(--fg-3); font-size: 11px; letter-spacing: 0.04em; }

/* @keyframes dot-drift is injected by generateBackground() into the SVG's own <style> tag */

@media (max-width: 640px) {
  header { flex-wrap: wrap; height: auto; padding: 10px 16px; gap: 10px; }
  .header-right { width: 100%; order: 3; margin-left: 0; }
  .header-right .search-area { flex: 1; width: auto; }
  main { padding: 22px 16px 56px; }
  .cards-grid { grid-template-columns: 1fr; gap: 10px; }
  .group { margin-bottom: 30px; }
  footer { padding: 20px 16px 28px; }
}

@media (min-width: 641px) and (max-width: 960px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-hi); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--fg-3); }

::selection { background: var(--accent-dim); color: var(--fg); }