/* === whichllm — Linear-inspired design system === */
@import url('https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,300..700&family=JetBrains+Mono:wght@400;500&display=swap');

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

:root {
  --bg-app:        #0f0f11;
  --bg-surface:    #161618;
  --bg-elevated:   #1c1c1f;
  --bg-overlay:    #222226;
  --bg-hover:      #26262a;
  --bg-active:     #2e2e33;

  --border:        #2a2a2e;
  --border-strong: #383840;

  --fg-primary:    #f2f2f3;
  --fg-secondary:  #8f8f9a;
  --fg-tertiary:   #55555f;
  --fg-disabled:   #3a3a3f;

  --accent:        #4a90d9;
  --accent-hover:  #5a9ee8;
  --accent-muted:  rgba(74,144,217,0.12);
  --accent-fg:     #7eb6e8;

  --green:         #4caf7d;
  --green-bg:      rgba(76,175,125,0.08);
  --green-border:  rgba(76,175,125,0.18);

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Code", monospace;

  --header-h:    52px;
  --filterbar-h: 40px;

  --r-sm:   4px;
  --r-md:   6px;
  --r-lg:   10px;
  --r-full: 9999px;

  --col-name:   300px;
  --col-badges: 1fr;
  --col-cost:   136px;
}

html, body {
  background: var(--bg-app);
  color: var(--fg-primary);
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

input, button, select { font-family: inherit; font-size: inherit; }
a { color: var(--accent-fg); text-decoration: none; }
a:hover { color: var(--fg-primary); }

header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  background: rgba(15,15,17,0.88);
  backdrop-filter: blur(12px) saturate(1.4);
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 1rem;
  gap: 0.75rem;
}

.nav-left { flex: none; display: flex; align-items: center; }

.logo {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.025em;
  display: flex;
  align-items: center;
  color: var(--fg-primary) !important;
}

.logo-which { color: var(--fg-primary); }
.logo-llm   { color: var(--fg-primary); }

.nav-divider {
  width: 1px;
  height: 14px;
  background: var(--border-strong);
  margin: 0 0.625rem;
  flex-shrink: 0;
}

.nav-center {
  flex: 1;
  display: flex;
  align-items: center;
  max-width: 340px;
}

.search-box {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 0.5rem;
  color: var(--fg-tertiary);
  pointer-events: none;
  width: 13px;
  height: 13px;
}

.search-input {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--fg-primary);
  border-radius: var(--r-md);
  padding: 0 2.25rem 0 1.75rem;
  font-size: 12px;
  height: 28px;
  transition: border-color 0.12s, box-shadow 0.12s;
}

.search-input::placeholder { color: var(--fg-tertiary); }

.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-muted);
  background: var(--bg-overlay);
}

.search-shortcut {
  position: absolute;
  right: 0.4rem;
  display: flex;
  align-items: center;
  gap: 1px;
  pointer-events: none;
}

.kbd {
  background: var(--bg-overlay);
  border: 1px solid var(--border-strong);
  color: var(--fg-tertiary);
  font-family: var(--font-sans);
  font-size: 10px;
  padding: 0 3px;
  border-radius: var(--r-sm);
  line-height: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
}

.nav-right {
  margin-left: auto;
  flex: none;
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.nav-link {
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-secondary) !important;
  padding: 0.25rem 0.5rem;
  border-radius: var(--r-sm);
  transition: color 0.1s, background 0.1s;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--fg-primary) !important;
  background: var(--bg-elevated);
}

.nav-credit {
  color: var(--accent-fg) !important;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}

.nav-credit:hover {
  color: var(--fg-primary) !important;
  border-color: var(--border-strong);
  background: var(--bg-overlay);
}

main { padding-top: var(--header-h); min-height: 100vh; }

.filter-bar {
  position: sticky;
  top: var(--header-h);
  z-index: 90;
  height: var(--filterbar-h);
  background: rgba(15,15,17,0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  gap: 0.75rem;
}

.filter-pills {
  display: flex;
  align-items: center;
  gap: 2px;
}

.pill-btn {
  background: none;
  border: none;
  color: var(--fg-tertiary);
  padding: 0 0.5rem;
  border-radius: var(--r-sm);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.1s, background 0.1s;
  white-space: nowrap;
  height: 26px;
  display: flex;
  align-items: center;
}

.pill-btn:hover { background: var(--bg-elevated); color: var(--fg-secondary); }
.pill-btn.active { background: var(--bg-active); color: var(--fg-primary); font-weight: 600; }

.sort-dropdown {
  background: var(--bg-elevated);
  color: var(--fg-secondary);
  border: 1px solid var(--border);
  padding: 0 1.5rem 0 0.5rem;
  border-radius: var(--r-sm);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%2355555f' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.375rem center;
  height: 26px;
  transition: border-color 0.1s, color 0.1s;
}

.sort-dropdown:hover { border-color: var(--border-strong); color: var(--fg-primary); }
.sort-dropdown:focus { outline: none; border-color: var(--accent); color: var(--fg-primary); }

.model-table-header {
  display: grid;
  grid-template-columns: var(--col-name) var(--col-badges) var(--col-cost);
  padding: 0 1rem;
  height: 30px;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
  position: sticky;
  top: calc(var(--header-h) + var(--filterbar-h));
  z-index: 80;
}

.col-header {
  font-size: 10.5px;
  font-weight: 500;
  color: var(--fg-tertiary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.col-header.right { text-align: right; }

.model-list { display: flex; flex-direction: column; }

.model-row {
  display: grid;
  grid-template-columns: var(--col-name) var(--col-badges) var(--col-cost);
  grid-template-rows: auto auto;
  align-items: center;
  padding: 0 1rem;
  min-height: 44px;
  border-bottom: 1px solid var(--border);
  transition: background 0.08s;
}

.model-row:hover { background: var(--bg-hover); }

.model-provider-row {
  grid-column: 1;
  grid-row: 1;
  font-size: 10.5px;
  font-weight: 500;
  color: var(--fg-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 0.375rem 1rem 0 0;
}

.model-name {
  grid-column: 1;
  grid-row: 2;
  font-size: 13px;
  font-weight: 500;
  color: var(--fg-primary);
  display: block;
  line-height: 1.3;
  padding: 1px 1rem 0.375rem 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  letter-spacing: -0.01em;
}

.model-name:hover { color: var(--accent-fg); }

.model-badges {
  grid-column: 2;
  grid-row: 2;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
  padding: 1px 0.5rem 0.375rem 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 1px 6px;
  border-radius: var(--r-sm);
  font-size: 11px;
  font-weight: 500;
  white-space: nowrap;
  line-height: 1.5;
  border: 1px solid transparent;
}

.badge.modality {
  background: var(--bg-elevated);
  color: var(--fg-tertiary);
  border-color: var(--border);
}

.badge.context {
  font-family: var(--font-mono);
  font-size: 10.5px;
  background: var(--bg-elevated);
  color: var(--fg-secondary);
  border-color: var(--border);
  letter-spacing: -0.02em;
}

.badge.feature-yes {
  background: var(--green-bg);
  color: var(--green);
  border-color: var(--green-border);
  font-weight: 600;
}

.badge.feature-no { display: none; }

.model-cost {
  grid-column: 3;
  grid-row: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  gap: 2px;
  padding-bottom: 0.375rem;
}

.cost-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  white-space: nowrap;
}

.cost-label { font-size: 10.5px; color: var(--fg-tertiary); }

.cost-value {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-secondary);
  letter-spacing: -0.02em;
}

dialog::backdrop {
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(4px);
}

dialog {
  background: var(--bg-surface);
  color: var(--fg-primary);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-lg);
  width: calc(100vw - 2rem);
  max-width: 560px;
  max-height: calc(100vh - 4rem);
  margin: auto;
  box-shadow: 0 24px 64px rgba(0,0,0,0.64), 0 0 0 1px rgba(255,255,255,0.03);
  padding: 0;
  display: none;
  flex-direction: column;
  overflow: hidden;
}

dialog[open] { display: flex; }

.dialog-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1rem 1rem 0.875rem;
  border-bottom: 1px solid var(--border);
  gap: 0.75rem;
}

.dialog-title-group { display: flex; flex-direction: column; gap: 2px; min-width: 0; }

.dialog-provider {
  font-size: 10.5px;
  font-weight: 500;
  color: var(--fg-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.dialog-header h2 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.dialog-close {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--fg-tertiary);
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-sm);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  flex-shrink: 0;
  transition: color 0.1s, background 0.1s;
}

.dialog-close:hover { color: var(--fg-primary); background: var(--bg-overlay); border-color: var(--border-strong); }

.dialog-body { padding: 1rem; overflow-y: auto; flex: 1; }

.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 0.875rem 1rem;
}

.detail-item { display: flex; flex-direction: column; gap: 3px; }

.detail-label {
  font-size: 10.5px;
  font-weight: 500;
  color: var(--fg-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.detail-value { font-size: 12.5px; color: var(--fg-primary); }
.detail-value.mono { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: -0.02em; }

.dialog-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-elevated);
}

.dialog-footer .slug { font-family: var(--font-mono); font-size: 10.5px; color: var(--fg-tertiary); letter-spacing: -0.02em; }

.dialog-footer a {
  font-size: 12px;
  font-weight: 500;
  color: var(--accent-fg) !important;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.dialog-footer a:hover { color: var(--fg-primary) !important; }

.loading-indicator { text-align: center; padding: 2rem; color: var(--fg-tertiary); font-size: 12px; }

@media (max-width: 900px) {
  :root { --col-name: 220px; --col-cost: 108px; }
}

@media (max-width: 640px) {
  .model-row, .model-table-header { grid-template-columns: 1fr auto; }
  .model-badges { display: none; }
  .col-header:nth-child(2) { display: none; }
}