:root {
  --color-bg: #ffffff;
  --color-bg-subtle: #fafafa;
  --color-border: #e8e8ea;
  --color-text: #1a1a1e;
  --color-text-muted: #6b6b75;
  --color-text-faint: #9a9aa2;
  --color-accent: #ff5c35;
  --color-accent-hover: #e8481f;
  --color-accent-soft: #fff1ec;
  --color-logo: #1d3557;

  --badge-free-bg: #e8f8ee;
  --badge-free-text: #17803d;
  --badge-freemium-bg: #eaf2ff;
  --badge-freemium-text: #1d5fd6;
  --badge-paid-bg: #fff4e5;
  --badge-paid-text: #b5680a;
  --badge-enterprise-bg: #f1eefc;
  --badge-enterprise-text: #6432d1;

  --shadow-sm: 0 1px 2px rgba(20, 20, 25, 0.05), 0 1px 1px rgba(20, 20, 25, 0.03);
  --shadow-md: 0 6px 20px rgba(20, 20, 25, 0.08), 0 2px 6px rgba(20, 20, 25, 0.04);
  --radius: 12px;
  --radius-sm: 8px;
  --container-w: 1120px;

  font-synthesis: none;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

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

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

.logo-mark {
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-logo);
  color: #fff;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 800;
}

.logo-accent { color: var(--color-logo); }

.search-wrap {
  position: relative;
  flex: 1;
  max-width: 480px;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-faint);
  pointer-events: none;
}

#search-input {
  width: 100%;
  height: 40px;
  padding: 0 14px 0 38px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-subtle);
  border-radius: 999px;
  font-size: 14px;
  color: var(--color-text);
  transition: border-color .15s, background .15s;
}

#search-input:focus {
  outline: none;
  border-color: var(--color-accent);
  background: #fff;
}

#search-input::placeholder { color: var(--color-text-faint); }

.btn-submit {
  flex-shrink: 0;
  background: var(--color-text);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: 999px;
  transition: background .15s;
  white-space: nowrap;
}

.btn-submit:hover { background: #000; }

/* ---------- Hero ---------- */
.hero {
  padding: 56px 0 28px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 12px;
}

.hero-sub {
  color: var(--color-text-muted);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto;
}

/* ---------- Filters ---------- */
.filters { padding-bottom: 8px; }

.filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 12px;
}

.filter-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 600;
  padding: 9px 16px;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: border-color .15s, background .15s, color .15s;
}

.filter-tab .chev { transition: transform .15s; color: var(--color-text-faint); }
.filter-tab[aria-expanded="true"] .chev { transform: rotate(180deg); }

.filter-tab:hover { border-color: #d4d4d8; background: var(--color-bg-subtle); }

.filter-tab[aria-expanded="true"] {
  border-color: var(--color-text);
  background: var(--color-text);
  color: #fff;
}
.filter-tab[aria-expanded="true"] .chev { color: #fff; }

.filter-tab.has-value {
  border-color: var(--color-accent);
  color: var(--color-accent-hover);
  background: var(--color-accent-soft);
}
.filter-tab.has-value .chev { color: var(--color-accent); }
.filter-tab.has-value[aria-expanded="true"] {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}
.filter-tab.has-value[aria-expanded="true"] .chev { color: #fff; }

.filter-panels { position: relative; }

.filter-panel[hidden] {
  display: none;
}

.filter-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px;
  margin: 0 auto 12px;
  max-width: 720px;
}

.filter-pill {
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 13px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color .15s, background .15s, color .15s;
}

.filter-pill:hover { border-color: var(--color-accent); }

.filter-pill.selected {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.active-filters[hidden] {
  display: none;
}

.active-filters {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 4px 0 20px;
}

.active-filters-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.active-chip {
  background: var(--color-accent-soft);
  color: var(--color-accent-hover);
  border: 1px solid #ffd9c9;
  font-size: 12.5px;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 999px;
  cursor: pointer;
}

.clear-filters {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 12.5px;
  font-weight: 600;
  text-decoration: underline;
  cursor: pointer;
  padding: 4px;
}

/* ---------- Listings ---------- */
.listings { padding: 12px 0 80px; }

.listings-header {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.results-count {
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0;
}

.agent-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.agent-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .18s, transform .18s, border-color .18s;
  display: flex;
  flex-direction: column;
}

.agent-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: #ddd;
}

.agent-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.agent-favicon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--color-text);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 17px;
}

.badge {
  font-size: 11.5px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-free { background: var(--badge-free-bg); color: var(--badge-free-text); }
.badge-freemium { background: var(--badge-freemium-bg); color: var(--badge-freemium-text); }
.badge-paid { background: var(--badge-paid-bg); color: var(--badge-paid-text); }
.badge-enterprise { background: var(--badge-enterprise-bg); color: var(--badge-enterprise-text); }

.agent-name {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
}

.agent-desc {
  color: var(--color-text-muted);
  font-size: 14px;
  margin: 0 0 14px;
  flex-grow: 1;
}

.agent-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.tag {
  font-size: 11.5px;
  font-weight: 600;
  padding: 4px 9px;
  border-radius: 6px;
  background: var(--color-bg-subtle);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.agent-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  gap: 10px;
}

.cost-detail {
  font-size: 12.5px;
  color: var(--color-text-faint);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.visit-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
  flex-shrink: 0;
}

.visit-link:hover { color: var(--color-accent-hover); text-decoration: underline; }

.no-results {
  text-align: center;
  color: var(--color-text-muted);
  padding: 60px 0;
  font-size: 15px;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
}

.footer-inner {
  color: var(--color-text-faint);
  font-size: 13px;
  text-align: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .agent-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .header-inner { height: auto; flex-wrap: wrap; padding: 12px 20px; gap: 12px; }
  .search-wrap { order: 3; max-width: none; flex-basis: 100%; }
  .btn-submit { padding: 8px 14px; font-size: 13px; }
  .hero { padding: 32px 0 20px; }
  .hero h1 { font-size: 26px; }
  .filter-tabs { justify-content: flex-start; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; }
  .agent-grid { grid-template-columns: 1fr; }
  .container { padding: 0 16px; }
}