/* CYBERDUDEBIVASH® Tools Store — Design System
   Extends the dark-navy / cyan-teal palette already established across
   cyberdudebivash.com, cyberdudebivash.in, intel.cyberdudebivash.com, and
   blog.cyberdudebivash.in — a new visual identity here would fracture the
   ecosystem, not strengthen it. */

:root {
  --bg: #060a10;
  --bg-raised: #0d1420;
  --bg-inset: #0a0e15;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --ink: #e7edf5;
  --ink-dim: #8b98a8;
  --ink-faint: #4b5768;
  --accent: #00d9b5;
  --accent-ink: #04140f;
  --accent-dim: rgba(0, 217, 181, 0.12);
  --gold: #e8b13c;
  --gold-dim: rgba(232, 177, 60, 0.12);
  --danger: #ef4444;
  --radius: 10px;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --max: 1180px;
}

/* Light theme override — the ecosystem is dark-first by established
   convention, but respect an explicit light preference rather than force
   dark on everyone. */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f7f9;
    --bg-raised: #ffffff;
    --bg-inset: #eef1f4;
    --line: rgba(6, 10, 16, 0.1);
    --line-strong: rgba(6, 10, 16, 0.18);
    --ink: #0b121b;
    --ink-dim: #4b5768;
    --ink-faint: #8b98a8;
    --accent: #0d9b81;
    --accent-ink: #ffffff;
    --accent-dim: rgba(13, 155, 129, 0.1);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

h1, h2, h3 {
  font-weight: 800;
  letter-spacing: -0.01em;
  text-wrap: balance;
  margin: 0;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
}

/* ── Header / nav ─────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(6, 10, 16, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
@media (prefers-color-scheme: light) {
  .site-header { background: rgba(245, 247, 249, 0.88); }
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }
.brand img { width: 28px; height: 28px; border-radius: 6px; }
.brand .sub {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--ink-dim);
  text-transform: uppercase;
  margin-left: 6px;
  padding-left: 10px;
  border-left: 1px solid var(--line-strong);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.main-nav a {
  color: var(--ink-dim);
  font-size: 14px;
  font-weight: 600;
}
.main-nav a:hover { color: var(--ink); text-decoration: none; }
.nav-cta {
  background: var(--accent);
  color: var(--accent-ink) !important;
  padding: 9px 18px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 13.5px;
}
.nav-cta:hover { text-decoration: none; opacity: 0.92; }
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .main-nav { position: fixed; inset: 68px 0 0 0; background: var(--bg); flex-direction: column; align-items: stretch; padding: 24px; gap: 4px; display: none; overflow-y: auto; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 14px 4px; border-bottom: 1px solid var(--line); font-size: 16px; }
  .nav-cta { text-align: center; margin-top: 10px; }
  .nav-toggle {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; background: transparent; border: 1px solid var(--line-strong);
    border-radius: 8px; color: var(--ink); cursor: pointer;
  }
}

/* ── Hero ─────────────────────────────────────────────────────────── */
.hero {
  padding: 76px 0 64px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(ellipse 900px 500px at 20% -10%, var(--accent-dim), transparent 60%),
    var(--bg);
}
.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.08;
  margin: 16px 0 20px;
}
.hero h1 span { color: var(--accent); }
.hero p.lead {
  font-size: 18px;
  color: var(--ink-dim);
  max-width: 62ch;
  margin: 0 0 32px;
}
.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.hero-stat .n {
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 800;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.hero-stat .l {
  font-size: 12.5px;
  color: var(--ink-dim);
  margin-top: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 14.5px;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { opacity: 0.92; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; }

/* ── Section scaffolding ──────────────────────────────────────────── */
.section { padding: 64px 0; }
.section-head { max-width: 640px; margin-bottom: 40px; }
.section-head h2 { font-size: clamp(24px, 3.4vw, 34px); margin-top: 10px; }
.section-head p { color: var(--ink-dim); font-size: 15.5px; margin-top: 12px; }
.section-alt { background: var(--bg-inset); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ── Category filter ──────────────────────────────────────────────── */
.filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.filter-chip {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.4px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--bg-raised);
  color: var(--ink-dim);
  cursor: pointer;
}
.filter-chip:hover { color: var(--ink); border-color: var(--accent); }
.filter-chip.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }

/* ── Product grid / cards ─────────────────────────────────────────── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.product-card {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.product-card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.product-card .cat {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--accent);
}
.product-card h3 { font-size: 19px; margin-top: 4px; }
.product-card h3 a { color: var(--ink); }
.product-card h3 a:hover { color: var(--accent); text-decoration: none; }
.product-card .tagline { color: var(--ink-dim); font-size: 14px; }
.product-card .badge {
  display: inline-flex;
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 4px 9px;
  border-radius: 5px;
  background: var(--gold-dim);
  color: var(--gold);
}
.product-card .price-row {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.product-card .price {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.product-card .price .from { font-size: 11px; color: var(--ink-dim); font-weight: 600; margin-right: 4px; text-transform: uppercase; letter-spacing: 0.5px; }
.product-card .view-link { font-size: 13.5px; font-weight: 700; }

/* ── Trust strip ──────────────────────────────────────────────────── */
.trust-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}
.trust-item {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}
.trust-item .t { font-weight: 700; font-size: 15px; margin-bottom: 6px; }
.trust-item .d { color: var(--ink-dim); font-size: 13.5px; }

/* ── Product detail page ──────────────────────────────────────────── */
.breadcrumb {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-dim);
  padding: 20px 0 0;
}
.breadcrumb a { color: var(--ink-dim); }
.breadcrumb a:hover { color: var(--accent); }
.product-hero {
  padding: 32px 0 56px;
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 900px) { .product-hero { grid-template-columns: 1fr; gap: 32px; } }
.product-hero h1 { font-size: clamp(28px, 4vw, 40px); margin: 14px 0 16px; }
.product-hero .tagline-lg { font-size: 17px; color: var(--ink-dim); margin-bottom: 22px; }
.feature-list { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 12px; }
.feature-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14.5px;
  color: var(--ink);
  line-height: 1.5;
}
.feature-list li::before {
  content: "";
  flex-shrink: 0;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 8px;
}

.buy-panel {
  background: var(--bg-raised);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 26px;
  position: sticky;
  top: 92px;
}
.buy-panel .panel-title { font-family: var(--mono); font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--ink-dim); margin-bottom: 16px; }
.tier {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
}
.tier.featured { border-color: var(--accent); background: var(--accent-dim); }
.tier .tier-top { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; margin-bottom: 6px; }
.tier .tier-name { font-weight: 700; font-size: 14.5px; }
.tier .tier-price { font-family: var(--mono); font-weight: 800; font-size: 17px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.tier .tier-summary { font-size: 12.5px; color: var(--ink-dim); line-height: 1.5; margin-bottom: 12px; }
.tier .btn { width: 100%; justify-content: center; }
.buy-note { font-size: 12px; color: var(--ink-faint); margin-top: 16px; line-height: 1.6; }
.buy-note a { color: var(--ink-dim); }

/* ── Legal / prose pages ──────────────────────────────────────────── */
.prose { max-width: 74ch; padding: 48px 0 80px; }
.prose h1 { font-size: 32px; margin-bottom: 8px; }
.prose .updated { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); margin-bottom: 36px; }
.prose h2 { font-size: 19px; margin: 36px 0 12px; }
.prose p, .prose li { color: var(--ink-dim); font-size: 15px; line-height: 1.75; }
.prose strong { color: var(--ink); }
.prose ul { padding-left: 20px; }
.prose table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.prose th { color: var(--ink); font-family: var(--mono); font-size: 11px; letter-spacing: 0.8px; text-transform: uppercase; }

/* ── Footer ───────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 56px 0 32px;
  background: var(--bg-inset);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 40px;
}
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-col h4 {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 14px;
}
.footer-col a { display: block; color: var(--ink-dim); font-size: 13.5px; margin-bottom: 10px; }
.footer-col a:hover { color: var(--accent); text-decoration: none; }
.footer-col p { color: var(--ink-faint); font-size: 13px; line-height: 1.7; margin: 0 0 6px; }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12.5px;
  color: var(--ink-faint);
}
.footer-bottom a { color: var(--ink-faint); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 10px 16px;
  z-index: 100;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .product-card { transition: none; }
}