/* ════════════════════════════════════════════════
   PromptVault — Professional Editorial Design
   ════════════════════════════════════════════════ */

:root {
  --bg: #0a0a0f;
  --bg2: #111118;
  --bg3: #16161f;
  --border: #22222e;
  --accent: #c8f135;
  --accent2: #7c3aed;
  --text: #f0f0f5;
  --muted: #8888a0;
  --card-hover: #1a1a26;
  --font-head: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius: 12px;
  --max: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

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

/* ── NAV ─────────────────────────────────────── */
.nav-wrap {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,15,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.logo {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
  flex-shrink: 0;
}
.logo span { color: var(--accent); }
.nav-links {
  display: flex; gap: 4px; flex: 1;
}
.nav-links a {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  transition: all 0.2s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text);
  background: var(--bg3);
}
.nav-badge {
  background: var(--accent);
  color: #000;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

/* ── AD SLOTS ────────────────────────────────── */
.ad-slot {
  max-width: var(--max);
  margin: 0 auto;
  padding: 8px 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 10px; /* collapses when empty */
}
.ad-top { padding-top: 16px; }
.ad-bottom { padding-bottom: 16px; }

/* ── HERO ────────────────────────────────────── */
.hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: 80px 24px 48px;
  text-align: center;
}
.hero-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--accent);
  text-transform: uppercase;
  border: 1px solid rgba(200,241,53,0.3);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 24px;
}
.hero h1 {
  font-family: var(--font-head);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -2px;
  color: var(--text);
  margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}
.hero-sub {
  font-size: 18px;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.6;
}
.hero-cats {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}
.cat-pill {
  padding: 8px 18px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--muted);
  background: var(--bg2);
  transition: all 0.2s;
  cursor: pointer;
}
.cat-pill:hover, .cat-pill.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(200,241,53,0.08);
}

/* ── GRID ────────────────────────────────────── */
.grid-section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 80px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}
.grid-small {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* ── CARD ────────────────────────────────────── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all 0.22s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0% 0%, rgba(200,241,53,0.04) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
}
.card:hover {
  border-color: rgba(200,241,53,0.3);
  background: var(--card-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}
.card:hover::before { opacity: 1; }

.card-top {
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-cat {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(200,241,53,0.1);
  padding: 3px 10px;
  border-radius: 20px;
}
.card-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 3px 8px;
  border-radius: 20px;
  background: var(--accent2);
  color: #fff;
}
.card-title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.3px;
  color: var(--text);
}
.card-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}
.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  margin-top: auto;
}
.card-dl {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}
.card-arrow {
  color: var(--muted);
  font-size: 18px;
  transition: transform 0.2s;
}
.card:hover .card-arrow { transform: translateX(4px); color: var(--accent); }

/* ── TOPIC PAGE ──────────────────────────────── */
.topic-hero {
  max-width: 800px;
  margin: 0 auto;
  padding: 64px 24px 48px;
}
.topic-meta {
  display: flex; gap: 10px; align-items: center; margin-bottom: 20px;
}
.topic-cat {
  font-size: 11px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--accent);
  background: rgba(200,241,53,0.1); padding: 4px 12px; border-radius: 20px;
}
.topic-title {
  font-family: var(--font-head);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 16px;
}
.topic-desc {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 36px;
}
.download-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.dl-info {
  display: flex; gap: 16px; align-items: center;
}
.dl-icon { font-size: 36px; }
.dl-info strong {
  display: block; font-family: var(--font-head);
  font-size: 16px; font-weight: 700; margin-bottom: 2px;
}
.dl-info span { font-size: 13px; color: var(--muted); }
.dl-btn {
  background: var(--accent);
  color: #000;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: 8px;
  transition: all 0.2s;
  white-space: nowrap;
}
.dl-btn:hover {
  background: #d8ff3a;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200,241,53,0.3);
}

/* ── MORE SECTION ────────────────────────────── */
.more-section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px 80px;
}
.more-title {
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

/* ── FOOTER ──────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg2);
}
.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 48px 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--muted);
  margin-top: 6px;
}
.footer-links {
  display: flex; gap: 20px; flex-wrap: wrap;
}
.footer-links a {
  font-size: 14px;
  color: var(--muted);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }
.footer-copy {
  font-size: 13px;
  color: var(--border);
}

/* ── RESPONSIVE ──────────────────────────────── */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero { padding: 48px 20px 32px; }
  .grid { grid-template-columns: 1fr; }
  .download-box { flex-direction: column; align-items: flex-start; }
  .dl-btn { width: 100%; text-align: center; }
  .topic-hero { padding: 40px 20px 32px; }
}