/* AI Atlas — 2026 design system: dark-first, light-dark(), electric gradient accents */

:root {
  color-scheme: dark light;
  --violet: #8b5cf6;
  --cyan: #22d3ee;
  --lime: #a3e635;

  --bg: light-dark(#fafafc, #0b0b14);
  --bg-card: light-dark(#ffffff, rgba(255, 255, 255, 0.045));
  --bg-card-hover: light-dark(#ffffff, rgba(255, 255, 255, 0.08));
  --ink: light-dark(#17171f, #ededf4);
  --ink-soft: light-dark(#5b5b6b, #9d9dae);
  --line: light-dark(#e7e7ee, rgba(255, 255, 255, 0.09));
  --header-bg: light-dark(rgba(250, 250, 252, 0.85), rgba(11, 11, 20, 0.7));
  --shadow: light-dark(0 12px 32px rgba(23, 23, 31, 0.08), 0 12px 32px rgba(0, 0, 0, 0.45));

  --radius: 16px;
  --grad: linear-gradient(120deg, var(--violet), var(--cyan));
}

@view-transition { navigation: auto; }

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

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-optical-sizing: auto;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  overflow-x: hidden;
}

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* Ambient glows */
.glow {
  position: fixed;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.16;
  pointer-events: none;
  z-index: 0;
}
.glow-a { background: var(--violet); top: -180px; left: -120px; }
.glow-b { background: var(--cyan); bottom: -220px; right: -140px; }
main, .site-header, .site-footer { position: relative; z-index: 1; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--header-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}
.logo em {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.site-nav { display: flex; gap: 26px; align-items: center; }
.site-nav a { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; font-weight: 500; }
.site-nav a:hover { color: var(--ink); }
.site-nav .lang-toggle {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 14px;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--ink);
  transition: border-color 0.15s, background 0.15s;
}
.site-nav .lang-toggle:hover { border-color: var(--violet); background: var(--bg-card); }

/* Hero */
.hero { padding: 72px 0 36px; text-align: center; }
.eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 14px;
  margin-bottom: 22px;
  background: var(--bg-card);
}
.hero h1 {
  font-size: clamp(2rem, 5.5vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 800;
  margin-bottom: 18px;
}
.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub { max-width: 620px; margin: 0 auto 36px; color: var(--ink-soft); font-size: 1.08rem; }

/* Search */
.search-wrap { max-width: 560px; margin: 0 auto 22px; }
#search {
  width: 100%;
  padding: 15px 22px;
  font-size: 1rem;
  color: var(--ink);
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 999px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
#search:focus {
  border-color: var(--violet);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--violet) 22%, transparent);
}
#search::placeholder { color: var(--ink-soft); }

/* Pills */
.pills { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.pill {
  border: 1px solid var(--line);
  background: var(--bg-card);
  color: var(--ink-soft);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}
.pill:hover { color: var(--ink); border-color: var(--violet); }
.pill.is-active {
  background: var(--grad);
  color: #0b0b14;
  border-color: transparent;
}

/* Category sections */
.cat-section { padding: 44px 0 8px; }
.cat-head h2 { font-size: 1.5rem; letter-spacing: -0.02em; display: flex; align-items: center; gap: 10px; }
.cat-head .count {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 10px;
}
.cat-head p { color: var(--ink-soft); margin: 6px 0 22px; max-width: 640px; }

/* Grid & cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.18s, border-color 0.18s, background 0.18s, box-shadow 0.18s;
}
.card:hover {
  transform: translateY(-3px);
  background: var(--bg-card-hover);
  border-color: color-mix(in srgb, var(--violet) 50%, var(--line));
  box-shadow: var(--shadow);
}
.card-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.card-id { display: flex; align-items: center; gap: 11px; min-width: 0; }
.tool-logo, .tool-logo-lg {
  border-radius: 9px;
  background: light-dark(#fff, rgba(255, 255, 255, 0.92));
  border: 1px solid var(--line);
  padding: 4px;
  object-fit: contain;
  flex-shrink: 0;
  transition: transform 0.22s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.tool-logo-lg { border-radius: 14px; padding: 8px; }
.card:hover .tool-logo { transform: rotate(-5deg) scale(1.08); }
.tool-hero-id { display: flex; align-items: flex-start; gap: 18px; }
.card h3 { font-size: 1.1rem; letter-spacing: -0.01em; }
.card h3 a { color: var(--ink); text-decoration: none; }
.card h3 a:hover { color: var(--violet); }
.card-tagline { color: var(--ink-soft); font-size: 0.93rem; flex: 1; }
.card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  padding-top: 12px;
  margin-top: 4px;
}
.card-cat { font-size: 0.82rem; color: var(--ink-soft); font-weight: 500; }
.card-visit {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--cyan);
  text-decoration: none;
}
.card-visit:hover { text-decoration: underline; }

/* Badges */
.badge {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 3px 10px;
  white-space: nowrap;
}
.badge-free { background: color-mix(in srgb, var(--lime) 18%, transparent); color: var(--lime); }
.badge-freemium { background: color-mix(in srgb, var(--cyan) 16%, transparent); color: var(--cyan); }
.badge-paid { background: color-mix(in srgb, var(--violet) 20%, transparent); color: var(--violet); }
@media (prefers-color-scheme: light) {
  .badge-free { color: #4d7c0f; }
  .badge-freemium { color: #0e7490; }
  .badge-paid { color: #6d28d9; }
}

.no-results { text-align: center; color: var(--ink-soft); padding: 40px 0; font-size: 1.05rem; }

/* Tool detail & static pages */
.page-content { padding: 48px 0 72px; }
.page-content.narrow { max-width: 720px; }
.crumbs { font-size: 0.88rem; color: var(--ink-soft); margin-bottom: 28px; }
.crumbs a { color: var(--ink-soft); text-decoration: none; }
.crumbs a:hover { color: var(--violet); }
.tool-hero {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin-bottom: 36px;
}
.page-content h1 { font-size: clamp(1.7rem, 4vw, 2.4rem); letter-spacing: -0.03em; }
.tool-tagline { color: var(--ink-soft); font-size: 1.08rem; margin-top: 6px; }
.tool-meta { display: flex; align-items: center; gap: 12px; margin-top: 14px; }
.btn-cta {
  display: inline-block;
  background: var(--grad);
  color: #0b0b14;
  font-weight: 800;
  font-size: 1rem;
  text-decoration: none;
  border-radius: 12px;
  padding: 14px 28px;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--violet) 40%, transparent);
}
.page-content h2 { font-size: 1.3rem; letter-spacing: -0.01em; margin: 30px 0 12px; }
.tool-desc, .page-content p { color: var(--ink-soft); }
.page-content p { margin-bottom: 10px; }
.tool-desc { font-size: 1.02rem; max-width: 760px; }
.fact-list { list-style: none; }
.fact-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.97rem;
}
.fact-list li strong { color: var(--ink); }
.fact-list a { color: var(--cyan); }
.page-content a { color: var(--cyan); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0; margin-top: 40px; }
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.footer-nav { display: flex; gap: 20px; }
.footer-nav a { color: var(--ink-soft); text-decoration: none; }
.footer-nav a:hover { color: var(--ink); }

/* Micro-interactions: hero entrance + scroll reveal (JS-gated, reduced-motion aware) */
@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: none; }
}
.hero .eyebrow { animation: rise 0.55s ease both; }
.hero h1 { animation: rise 0.55s ease 0.08s both; }
.hero-sub { animation: rise 0.55s ease 0.16s both; }
.search-wrap { animation: rise 0.55s ease 0.24s both; }
.pills { animation: rise 0.55s ease 0.3s both; }

.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.js .reveal.in-view { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}

@media (max-width: 600px) {
  .site-nav { display: none; }
  .hero { padding: 48px 0 28px; }
  .tool-hero { flex-direction: column; align-items: flex-start; }
  .tool-hero-id { flex-direction: column; gap: 14px; }
}