@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg:           #FAFAFA;
  --surface:      #FFFFFF;
  --surface-2:    #F4F4F5;
  --ink:          #0A0A0A;
  --ink-2:        #525252;
  --ink-3:        #A3A3A3;
  --ink-4:        #D4D4D4;
  --border:       rgba(10, 10, 10, 0.08);
  --border-2:     rgba(10, 10, 10, 0.14);

  --accent:       #4F46E5;
  --accent-soft:  rgba(79, 70, 229, 0.08);

  --gradient-1:   rgba(79, 70, 229, 0.08);
  --gradient-2:   rgba(79, 70, 229, 0.05);

  --inverted-surface: #0A0A0A;
  --inverted-ink:     #FFFFFF;

  --font:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', 'Menlo', monospace;

  --radius:       12px;
  --radius-sm:    8px;

  --shadow-sm:    0 1px 2px rgba(10, 10, 10, 0.04), 0 0 0 1px rgba(10, 10, 10, 0.04);
  --shadow:       0 4px 16px rgba(10, 10, 10, 0.06), 0 0 0 1px rgba(10, 10, 10, 0.06);
}

[data-theme="dark"] {
  --bg:           #0B0D12;
  --surface:      #14171D;
  --surface-2:    #1A1E26;
  --ink:          #F4F5F7;
  --ink-2:        #B8BCC4;
  --ink-3:        #6E7480;
  --ink-4:        #3A3F49;
  --border:       rgba(255, 255, 255, 0.08);
  --border-2:     rgba(255, 255, 255, 0.16);

  --accent:       #818CF8;
  --accent-soft:  rgba(129, 140, 248, 0.14);

  --gradient-1:   rgba(129, 140, 248, 0.10);
  --gradient-2:   rgba(129, 140, 248, 0.06);

  --inverted-surface: #FAFAFA;
  --inverted-ink:     #0A0A0A;

  --shadow-sm:    0 1px 2px rgba(0, 0, 0, 0.30), 0 0 0 1px rgba(255, 255, 255, 0.04);
  --shadow:       0 4px 16px rgba(0, 0, 0, 0.30), 0 0 0 1px rgba(255, 255, 255, 0.05);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  background-image:
    radial-gradient(circle at 20% 0%, var(--gradient-1), transparent 45%),
    radial-gradient(circle at 80% 100%, var(--gradient-2), transparent 55%);
}

a { color: inherit; text-decoration: none; }

::selection { background: var(--accent-soft); color: var(--ink); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 56px;
  padding: 0 24px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.brand-home {
  font-family: var(--font);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand-home:hover { color: var(--accent); }

.brand-sep,
.brand-lab {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-3);
}

.topbar-spacer { flex: 1; }

.topbar-link {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  transition: color 0.15s ease, border-color 0.15s ease;
}
.topbar-link:hover { color: var(--accent); border-color: var(--accent); }

.topbar-link + .theme-toggle { margin-left: 0; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-left: auto;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-2);
  cursor: pointer;
  padding: 0;
  transition: border-color .15s ease, color .15s ease, transform .15s ease;
}
.theme-toggle:hover {
  border-color: var(--border-2);
  color: var(--ink);
  transform: scale(1.04);
}
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun  { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.page-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding: 8px 0 28px;
}

.eyebrow {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-family: var(--font);
  font-weight: 700;
  font-size: 36px;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.05;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(96px, 1fr));
  gap: 10px;
}

.metric {
  min-width: 96px;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.metric-value {
  display: block;
  font-family: var(--font);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1;
}

.metric-label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 6px 0 22px;
}

.brand-tabs {
  display: flex;
  gap: 8px;
  min-width: 0;
}

.brand-tab {
  min-height: 34px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink-2);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.brand-tab:hover {
  border-color: var(--border-2);
  color: var(--ink);
}
.brand-tab.is-active {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.search { width: min(320px, 100%); }

.search input {
  width: 100%;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font);
  font-size: 13px;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
.search input::placeholder { color: var(--ink-3); }
.search input:hover { border-color: var(--ink-3); }
.search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.content-head {
  display: flex;
  justify-content: flex-end;
  min-height: 18px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--ink-3);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  cursor: pointer;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: var(--border-2);
}

.card-title {
  margin: 0;
  font-family: var(--font);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.015em;
  color: var(--ink);
  line-height: 1.25;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
}

.tag {
  padding: 3px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-2);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-2);
  text-transform: uppercase;
}

.card-description {
  margin: 0;
  font-family: var(--font);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-2);
  letter-spacing: -0.003em;
}

.card-action {
  margin-top: auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}
.card:hover .card-action { color: var(--accent); }

.empty {
  padding: 36px 0;
  font-family: var(--font);
  font-size: 14px;
  color: var(--ink-3);
  text-align: center;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

@media (max-width: 720px) {
  .topbar { padding: 0 16px; }
  .page-head, .toolbar {
    align-items: stretch;
    flex-direction: column;
  }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  h1 { font-size: 28px; }
  .search { width: 100%; }
}