/* ==============================================
   AI CATALOG — Dark terminal / coding theme
   Compact layout, config-driven
   ============================================== */

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

:root {
  --bg:         #0c0e14;
  --bg-alt:     #111318;
  --surface:    #161922;
  --surface-hi: #1c2030;
  --border:     #252a3a;
  --border-hi:  #3a4060;
  --text:       #cdd6f4;
  --text-soft:  #7f849c;
  --accent:     #00e8c6;
  --accent-dim: rgba(0, 232, 198, 0.12);
  --accent-hover: #00ffdb;
  --tag-color:  #b4befe;
  --tag-bg:     rgba(180, 190, 254, 0.08);
  --tag-border: rgba(180, 190, 254, 0.15);
  --mono: "JetBrains Mono", "Fira Code", "Cascadia Code", "SF Mono", Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-w: 1100px;
  --r: 6px;
  --t: 0.18s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans); font-size: 0.9rem; line-height: 1.55;
  color: var(--text); background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: color var(--t); }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; display: block; }

/* ---------- UTILITY ---------- */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.25rem; }
.accent { color: var(--accent); }
.prompt { color: var(--accent); font-family: var(--mono); }

/* ---------- NAV ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(12, 14, 20, 0.92);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 0 1.25rem;
  display: flex; align-items: center; justify-content: space-between; height: 48px;
}
.nav-logo {
  font-family: var(--mono); font-size: 0.85rem; font-weight: 700;
  color: var(--text); letter-spacing: -0.01em;
}
.nav-logo:hover { color: var(--accent); }
.nav-links { display: flex; list-style: none; gap: 1.5rem; }
.nav-links a {
  font-family: var(--mono); color: var(--text-soft); font-size: 0.78rem; font-weight: 500;
}
.nav-links a:hover { color: var(--accent); }

.nav-toggle {
  display: none; flex-direction: column; gap: 4px;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text); border-radius: 1px; }

/* ---------- HERO ---------- */
.hero {
  text-align: center;
  padding: calc(48px + 2.5rem) 1.25rem 2.5rem;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 500px 300px at 50% 30%, rgba(0, 232, 198, 0.06), transparent),
    radial-gradient(ellipse 300px 200px at 30% 60%, rgba(100, 80, 255, 0.04), transparent);
}
.hero-prefix {
  font-family: var(--mono); font-size: 0.75rem; color: var(--text-soft);
  margin-bottom: 0.5rem; letter-spacing: 0.02em;
}
.hero-title {
  font-family: var(--mono); font-size: clamp(2rem, 5.5vw, 3rem);
  font-weight: 700; letter-spacing: -0.04em; line-height: 1.1; margin-bottom: 0.5rem;
}
.cursor { color: var(--accent); animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero-tagline {
  font-size: 1rem; color: var(--text-soft); max-width: 400px; margin: 0 auto 1.25rem;
}
.hero-actions { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex; align-items: center; font-family: var(--mono);
  font-weight: 600; font-size: 0.8rem; padding: 0.5rem 1.2rem;
  border-radius: var(--r); border: none; cursor: pointer;
  transition: all var(--t); text-decoration: none; letter-spacing: -0.01em;
}
.btn-primary { background: var(--accent); color: var(--bg); }
.btn-primary:hover {
  background: var(--accent-hover); color: var(--bg);
  transform: translateY(-1px); box-shadow: 0 4px 18px rgba(0, 232, 198, 0.25);
}
.btn-ghost { background: transparent; color: var(--text-soft); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--accent); border-color: var(--accent); }
.btn-sm {
  font-size: 0.78rem; padding: 0.4rem 1rem;
  background: var(--accent); color: var(--bg); border-radius: var(--r);
}
.btn-sm:hover {
  background: var(--accent-hover); color: var(--bg);
  transform: translateY(-1px); box-shadow: 0 3px 12px rgba(0, 232, 198, 0.2);
}
.btn-xs {
  font-size: 0.72rem; padding: 0.3rem 0.75rem;
  background: var(--accent-dim); color: var(--accent); border-radius: var(--r);
  border: 1px solid rgba(0, 232, 198, 0.15);
}
.btn-xs:hover {
  background: var(--accent); color: var(--bg); transform: translateY(-1px);
}

/* ---------- SECTIONS ---------- */
.section { padding: 2.5rem 0; }
.section-alt { background: var(--bg-alt); }
.section-title {
  font-family: var(--mono); font-size: clamp(1.1rem, 3vw, 1.4rem);
  font-weight: 700; text-align: center; margin-bottom: 0.25rem;
  letter-spacing: -0.02em;
}
.section-desc {
  text-align: center; color: var(--text-soft); max-width: 420px;
  margin: 0 auto 1.5rem; font-size: 0.85rem;
}

/* ---------- TOP PICKS ---------- */
.picks-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0.85rem;
}
.pick-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); padding: 1rem;
  display: flex; flex-direction: column; gap: 0.35rem;
  transition: all var(--t);
}
.pick-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(0, 232, 198, 0.07);
  transform: translateY(-2px);
}
.pick-header { display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap; }
.pick-category {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 600;
  text-transform: lowercase; letter-spacing: 0.04em;
  color: var(--accent); background: var(--accent-dim);
  padding: 0.1rem 0.45rem; border-radius: 3px;
}
.pick-name { font-size: 0.95rem; font-weight: 700; }
.pick-desc { color: var(--text-soft); font-size: 0.8rem; flex-grow: 1; }
.pick-footer {
  display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
  margin-top: 0.25rem;
}
.pick-footer .tags { flex: 1; }

/* ---------- CATEGORIES ---------- */
.cat-block { margin-bottom: 2rem; }
.cat-block:last-child { margin-bottom: 0; }
.cat-name {
  font-family: var(--mono); font-size: 1rem; font-weight: 700;
  margin-bottom: 0.75rem; display: flex; align-items: center; gap: 0;
  padding-bottom: 0.4rem; border-bottom: 1px solid var(--border);
}
.cat-prefix { color: var(--text-soft); }

.tools-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0.7rem;
}
.tool-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); padding: 0.8rem;
  display: flex; flex-direction: column; gap: 0.2rem;
  transition: all var(--t);
}
.tool-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 16px rgba(0, 232, 198, 0.05);
  transform: translateY(-1px);
}
.tool-top { display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap; }
.tool-name { font-size: 0.88rem; font-weight: 700; }
.tool-desc { color: var(--text-soft); font-size: 0.78rem; flex-grow: 1; margin-bottom: 0.3rem; }
.tool-footer {
  display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
  margin-top: auto;
}
.tool-footer .tags { flex: 1; }
.tool-footer .btn-xs { flex-shrink: 0; }

/* ---------- PRICE BADGE ---------- */
.price {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 600;
  color: var(--accent); background: var(--accent-dim);
  padding: 0.1rem 0.4rem; border-radius: 3px;
  border: 1px solid rgba(0, 232, 198, 0.12); white-space: nowrap;
}

/* ---------- TAG BADGES ---------- */
.tags { display: flex; gap: 0.25rem; flex-wrap: wrap; }
.tag {
  font-family: var(--mono); font-size: 0.6rem; font-weight: 600;
  text-transform: lowercase; letter-spacing: 0.03em;
  color: var(--tag-color); background: var(--tag-bg);
  padding: 0.08rem 0.35rem; border-radius: 3px;
  border: 1px solid var(--tag-border); white-space: nowrap;
}

/* ---------- ABOUT ---------- */
.about-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem;
}
.about-item { text-align: center; padding: 1rem; }
.about-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; font-size: 0.9rem; font-family: var(--mono);
  font-weight: 700; background: var(--accent-dim); color: var(--accent);
  border-radius: 8px; margin-bottom: 0.5rem;
  border: 1px solid rgba(0, 232, 198, 0.12);
}
.about-item h3 { font-size: 0.92rem; font-weight: 700; margin-bottom: 0.25rem; }
.about-item p { color: var(--text-soft); font-size: 0.82rem; }

/* ---------- DISCLOSURE ---------- */
.disclosure-box {
  max-width: 600px; margin: 0 auto; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--r); padding: 1rem 1.25rem;
}
.disclosure-box p {
  color: var(--text-soft); font-size: 0.82rem; line-height: 1.6; text-align: center;
}

/* ---------- FOOTER ---------- */
.footer {
  background: var(--bg); border-top: 1px solid var(--border); padding: 1.5rem 0 1rem;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1rem;
  padding-bottom: 1rem; border-bottom: 1px solid var(--border);
}
.footer-logo { font-family: var(--mono); font-size: 0.82rem; font-weight: 700; color: var(--text); }
.footer-tagline { font-size: 0.72rem; color: var(--text-soft); margin-top: 0.1rem; }
.footer-nav { display: flex; gap: 1rem; flex-wrap: wrap; }
.footer-nav a { font-family: var(--mono); color: var(--text-soft); font-size: 0.75rem; font-weight: 500; }
.footer-nav a:hover { color: var(--accent); }
.footer-contact a { font-family: var(--mono); font-size: 0.75rem; color: var(--text-soft); }
.footer-contact a:hover { color: var(--accent); }
.footer-bottom { text-align: center; padding-top: 0.75rem; }
.footer-bottom p { font-size: 0.7rem; color: var(--text-soft); opacity: 0.5; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-links {
    display: none; position: absolute; top: 48px; left: 0; right: 0;
    flex-direction: column; background: rgba(12, 14, 20, 0.98);
    padding: 0.75rem 1.25rem; gap: 0.5rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.active { display: flex; }
  .hero { padding-top: calc(48px + 2rem); padding-bottom: 2rem; }
  .section { padding: 2rem 0; }
  .picks-grid { grid-template-columns: 1fr 1fr; }
  .tools-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-nav { justify-content: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 0.85rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; max-width: 240px; }
  .picks-grid { grid-template-columns: 1fr; }
  .tools-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
}