/* ============================================================
   global.css — Shared styles for Antileak learn pages
   Light mode overrides are in /shared/theme.css (loaded via
   theme.js in every page's <head>).
   ============================================================ */

/* ============ VARIABLES ============ */
:root {
  --bg: #0C0D12;
  --bg-raised: #111318;
  --bg-card: #161820;
  --border: #1E2130;
  --border-hover: #2C3044;
  --green: #34D399;
  --green-dim: rgba(52, 211, 153, 0.08);
  --green-mid: rgba(52, 211, 153, 0.15);
  --green-glow: rgba(52, 211, 153, 0.25);
  --red: #FF5C5C;
  --amber: #FFB84D;
  --text: #D6D9E3;
  --text-dim: #929AB0;
  --text-muted: #636A80;
  --white: #F0F2F7;
  --radius: 12px;

  /* Spacing scale (8px grid) */
  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 32px;
  --sp-5: 40px;
  --sp-6: 48px;
  --sp-7: 56px;
  --sp-8: 64px;
  --sp-9: 72px;
  --sp-10: 80px;
  --sp-12: 96px;
  --sp-section: 80px;

  /* Content widths */
  --content-max: 1100px;
  --prose-max: 720px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: 'IBM Plex Sans', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.container { max-width: var(--content-max); margin: 0 auto; padding: 0 var(--sp-3); }

/* ============ NAV ============ */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  padding: var(--sp-2) var(--sp-3);
  background: rgba(12, 13, 18, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: padding 0.3s ease, background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

nav.scrolled {
  padding: 10px var(--sp-3);
  background: rgba(12, 13, 18, 0.95);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  border-color: transparent;
}

.nav-inner {
  max-width: var(--content-max); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
}

.logo {
  font-family: 'Anybody', sans-serif;
  font-weight: 800;
  font-size: 20px;
  color: var(--white);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo span { color: var(--green); }

.nav-links { display: flex; align-items: center; gap: var(--sp-4); }
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--text-dim);
  text-decoration: none; transition: color 0.2s;
}
.nav-links a:hover { color: var(--white); }

.nav-cta {
  background: var(--green) !important;
  color: var(--bg) !important;
  padding: 8px 18px;
  border-radius: 8px;
  font-weight: 600 !important;
  font-size: 13px !important;
  transition: all 0.2s !important;
}
.nav-cta:hover { box-shadow: 0 0 20px var(--green-glow); }

/* ============ FOOTER ============ */
footer {
  border-top: none;
  padding: var(--sp-5) var(--sp-3);
  position: relative;
  transition: background-color 0.3s ease, color 0.3s ease;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(100%, 600px);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(52, 211, 153, 0.3), transparent);
}

.footer-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--sp-5);
}

.footer-left .logo { font-size: 18px; }

.footer-left .footer-tagline {
  font-size: 14px;
  color: var(--text-dim);
  margin-top: 8px;
  max-width: 240px;
  line-height: 1.5;
}

.footer-left p {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.footer-col a {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-col a:hover { color: var(--text); }

/* Legacy footer-links (auth pages) */
.footer-links { display: flex; gap: var(--sp-3); }
.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--text); }

@media (max-width: 600px) {
  .footer-inner {
    flex-direction: column;
    gap: var(--sp-4);
  }
}

/* ============ TYPOGRAPHY ============ */
.h1 {
  font-family: 'Anybody', sans-serif;
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.h2 {
  font-family: 'Anybody', sans-serif;
  font-size: 32px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.body-text { font-size: 16.5px; line-height: 1.7; color: var(--text); }
.prose-text { line-height: 1.7; }
.caption { font-size: 13.5px; color: var(--text-dim); }

/* ============ SECTION UTILITIES ============ */
.section-padded { padding: var(--sp-section) var(--sp-3); }
.section-border-top { border-top: 1px solid var(--border); }

.section-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
  text-align: center;
  background: linear-gradient(135deg, var(--green), #6EE7B7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title {
  font-family: 'Anybody', sans-serif;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--white);
  text-align: center;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-7);
}

/* ============ LEARN PAGE HERO ============ */
.learn-hero {
  padding: 130px var(--sp-3) var(--sp-6);
  text-align: center;
  position: relative;
}

.learn-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 50%; transform: translateX(-50%);
  width: 700px; height: 500px;
  background: radial-gradient(ellipse, rgba(52, 211, 153, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.learn-hero h1 {
  font-family: 'Anybody', sans-serif;
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-2);
  max-width: var(--prose-max);
  margin-left: auto; margin-right: auto;
  animation: fadeDown 0.5s ease 0.1s both;
}

.learn-hero .subtitle {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.65;
  animation: fadeDown 0.5s ease 0.2s both;
}

/* ============ BREADCRUMB ============ */
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: var(--sp-3);
  animation: fadeDown 0.5s ease both;
}

.breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.breadcrumb a:hover { color: var(--green); }

.breadcrumb .sep { color: var(--text-muted); font-size: 11px; }

.breadcrumb .current { color: var(--text-dim); }

/* ============ CONTENT BODY ============ */
.content-body {
  max-width: var(--prose-max);
  margin: 0 auto;
  padding: 0 var(--sp-3);
}

.content-body p {
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--text);
  margin-bottom: var(--sp-3);
}

.content-body h2 {
  font-family: 'Anybody', sans-serif;
  font-size: clamp(24px, 3.5vw, 32px);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
  margin-top: var(--sp-7);
  margin-bottom: var(--sp-2);
}

.content-body h3 {
  font-family: 'Anybody', sans-serif;
  font-size: 20px;
  font-weight: 600;
  color: var(--white);
  margin-top: var(--sp-5);
  margin-bottom: var(--sp-1);
}

.content-body strong { color: var(--white); font-weight: 600; }

.content-body a {
  color: var(--green);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(52, 211, 153, 0.35);
  transition: text-decoration-color 0.2s;
}

.content-body a:hover { text-decoration-color: var(--green); }

.content-body ul,
.content-body ol {
  margin-bottom: var(--sp-3);
  padding-left: var(--sp-3);
}

.content-body li {
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--text);
  margin-bottom: var(--sp-1);
}

/* Callout boxes */
.callout {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: var(--sp-3);
  margin: var(--sp-4) 0;
}

.callout p {
  font-size: 15px;
  margin-bottom: 0;
}

.callout strong { color: var(--green); }

/* ============ RELATED PAGES GRID ============ */
.related-section {
  padding: var(--sp-section) var(--sp-3);
  border-top: none;
  position: relative;
}

.related-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(100%, 600px);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(52, 211, 153, 0.3), transparent);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 960px;
  margin: 0 auto;
}

.related-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--sp-3) var(--sp-3) var(--sp-4);
  text-decoration: none;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  display: block;
}

.related-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(52, 211, 153, 0.06);
}

.related-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.5), transparent 40%, rgba(52, 211, 153, 0.3));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.related-card:hover::before {
  opacity: 1;
}

.related-card .card-category {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: var(--sp-1);
}

.related-card .card-title {
  font-family: 'Anybody', sans-serif;
  font-size: 18px;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.related-card .card-desc {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.55;
}

/* ============ CTA BANNER ============ */
.cta-section {
  padding: var(--sp-section) var(--sp-3);
  border-top: none;
  text-align: center;
  position: relative;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(100%, 600px);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(52, 211, 153, 0.3), transparent);
}

.cta-section h2 {
  font-family: 'Anybody', sans-serif;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-1);
}

.cta-section .cta-sub {
  font-size: 17px;
  color: var(--text-dim);
  margin-bottom: var(--sp-5);
  max-width: 460px;
  margin-left: auto;
  margin-right: auto;
}

/* ============ SCAN FORM ============ */
.scan-form-wrap {
  max-width: 540px;
  margin: 0 auto;
}

.scan-form {
  display: flex;
  gap: 8px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 6px;
  transition: border-color 0.3s;
}

.scan-form:focus-within {
  border-color: rgba(52, 211, 153, 0.4);
  box-shadow: 0 0 40px rgba(52, 211, 153, 0.06);
}

.scan-form input[type="url"] {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 15px;
  color: var(--white);
  padding: 12px 16px;
  min-width: 0;
}

.scan-form input::placeholder { color: var(--text-muted); }

.scan-btn {
  background: var(--green);
  color: var(--bg);
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  padding: 12px 24px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.25s;
}

.scan-btn:hover {
  box-shadow: 0 4px 24px var(--green-glow);
  transform: translateY(-1px);
}

.scan-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 12px;
}

/* ============ ANIMATIONS ============ */
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-14px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* Scroll-triggered reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ RESOURCES HUB ============ */
.category-section {
  padding: 0 var(--sp-3) var(--sp-8);
  max-width: var(--content-max);
  margin: 0 auto;
}

.category-section:first-of-type {
  padding-top: var(--sp-5);
}

.category-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: var(--sp-3);
  padding-bottom: var(--sp-2);
  border-bottom: 1px solid var(--border);
}

.category-icon {
  font-size: 24px;
  line-height: 1;
}

.category-name {
  font-family: 'Anybody', sans-serif;
  font-size: 22px;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.01em;
}

.category-desc {
  font-size: 14px;
  color: var(--text-dim);
  margin-left: auto;
}

.page-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.page-card {
  display: block;
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--sp-3);
  text-decoration: none;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}

.page-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(52, 211, 153, 0.06);
}

.page-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.5), transparent 40%, rgba(52, 211, 153, 0.3));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.page-card:hover::before {
  opacity: 1;
}

.page-card .card-pill {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green);
  background: var(--green-dim);
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.page-card .card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
  line-height: 1.3;
}

.page-card .card-desc {
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ============ STAGGER ANIMATIONS ============ */
/* Generic stagger: children fade up with cascading delays */
.stagger > * {
  opacity: 0;
  transform: translateY(20px);
}

.stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger.visible > *:nth-child(2) { transition-delay: 0.07s; }
.stagger.visible > *:nth-child(3) { transition-delay: 0.14s; }
.stagger.visible > *:nth-child(4) { transition-delay: 0.21s; }
.stagger.visible > *:nth-child(5) { transition-delay: 0.28s; }
.stagger.visible > *:nth-child(6) { transition-delay: 0.35s; }
.stagger.visible > *:nth-child(7) { transition-delay: 0.42s; }
.stagger.visible > *:nth-child(8) { transition-delay: 0.49s; }

/* Related grid: cards stagger in with cascading delays */
.related-grid .related-card.reveal:nth-child(2) { transition-delay: 0.1s; }
.related-grid .related-card.reveal:nth-child(3) { transition-delay: 0.2s; }

/* Resources hub: page cards stagger when category section becomes visible */
.category-section .page-card {
  opacity: 0;
  transform: translateY(16px);
}

.category-section.visible .page-card {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.45s ease, transform 0.45s ease, border-color 0.3s, box-shadow 0.3s;
}

.category-section.visible .page-card:nth-child(2) { transition-delay: 0.08s; }
.category-section.visible .page-card:nth-child(3) { transition-delay: 0.16s; }
.category-section.visible .page-card:nth-child(4) { transition-delay: 0.24s; }

/* ============ MEGA DROPDOWN ============ */
.mega-wrap {
  position: relative;
}

.mega-trigger {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  transition: color 0.2s;
}

.mega-trigger:hover,
.mega-trigger[aria-expanded="true"] {
  color: var(--white);
}

.mega-chevron {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
}

.mega-trigger[aria-expanded="true"] .mega-chevron {
  transform: rotate(180deg);
}

.mega-panel {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 680px;
  max-width: calc(100vw - 48px);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 16px 16px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5), 0 8px 24px rgba(0, 0, 0, 0.3);
  z-index: 99;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px);
  transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0.25s,
              background-color 0.3s ease,
              border-color 0.3s ease;
  pointer-events: none;
}

.mega-panel.open {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.mega-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--green) 30%, var(--green) 70%, transparent);
  opacity: 0.6;
}

.mega-glow::after {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 40px;
  background: radial-gradient(ellipse at top, var(--green-glow), transparent 80%);
  pointer-events: none;
}

.mega-inner {
  display: flex;
  min-height: 260px;
}

.mega-sidebar {
  position: relative;
  width: 200px;
  flex-shrink: 0;
  padding: 16px 0;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mega-cat {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-dim);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  width: 100%;
  transition: color 0.2s;
}

.mega-cat:hover { color: var(--white); }

.mega-cat.active {
  color: var(--white);
  font-weight: 600;
}

.mega-cat-icon {
  font-size: 16px;
  line-height: 1;
  flex-shrink: 0;
  width: 20px;
  text-align: center;
}

.mega-cat-indicator {
  position: absolute;
  left: 8px;
  right: 8px;
  height: 38px;
  background: var(--green-dim);
  border: 1px solid rgba(52, 211, 153, 0.12);
  border-radius: 8px;
  transition: top 0.3s cubic-bezier(0.4, 0, 0.2, 1), height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 0;
  pointer-events: none;
}

.mega-content {
  flex: 1;
  padding: 16px 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-content: start;
}

.mega-content.single-col {
  grid-template-columns: 1fr;
}

.mega-page {
  display: block;
  padding: 12px 14px;
  border-radius: 10px;
  text-decoration: none;
  transition: background 0.2s;
  opacity: 0;
  transform: translateY(6px);
}

.mega-page.visible {
  opacity: 1;
  transform: translateY(0);
  transition: background 0.2s, opacity 0.3s ease, transform 0.3s ease;
}

.mega-page:hover {
  background: var(--bg-card);
}

.mega-page-title {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 2px;
  line-height: 1.3;
}

.mega-page-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.45;
}

.mega-page:nth-child(1) { transition-delay: 0s; }
.mega-page:nth-child(2) { transition-delay: 0.04s; }
.mega-page:nth-child(3) { transition-delay: 0.08s; }
.mega-page:nth-child(4) { transition-delay: 0.12s; }

.mega-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
}

.mega-view-all {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--green);
  text-decoration: none;
  transition: gap 0.2s, opacity 0.2s;
}

.mega-view-all:hover {
  gap: 8px;
  opacity: 0.85;
}

/* ============ NOISE OVERLAY (hero + cards only) ============ */
.learn-hero::after,
.cta-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.02'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  border-radius: inherit;
}

/* ============ MICRO-INTERACTIONS ============ */
/* Card hover lift */
.related-card,
.page-card,
.check-item,
.price-card {
  transition: border-color 0.3s, transform 0.2s ease, box-shadow 0.2s ease;
}

/* Button press feedback */
.scan-btn:active,
.nav-cta:active,
.card-cta:active,
.mobile-menu-cta:active {
  transform: scale(0.97);
}

/* Theme transition on cards */
.related-card,
.page-card,
.scan-form,
.callout,
nav {
  transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

/* ============ MOBILE NAV ============ */
.nav-mobile { display: none; align-items: center; gap: 10px; }

.nav-login-mobile {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text) !important;
  padding: 7px 14px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 13px;
  text-decoration: none;
  transition: all 0.2s;
}
.nav-login-mobile:hover { border-color: var(--border-hover); color: var(--white) !important; }

.hamburger {
  display: flex; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text); border-radius: 2px; transition: all 0.3s;
}

.mobile-menu-overlay {
  position: fixed; inset: 0; background: rgba(0, 0, 0, 0.6);
  z-index: 200; opacity: 0; visibility: hidden; transition: opacity 0.3s, visibility 0.3s;
}
.mobile-menu.open .mobile-menu-overlay { opacity: 1; visibility: visible; }

.mobile-menu-drawer {
  position: fixed; top: 0; right: 0;
  width: 280px; max-width: 85vw; height: 100vh; height: 100dvh;
  background: var(--bg-raised); border-left: 1px solid var(--border);
  z-index: 201; transform: translateX(100%); transition: transform 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
  display: flex; flex-direction: column; padding: var(--sp-3); overflow-y: auto;
}
.mobile-menu.open .mobile-menu-drawer { transform: translateX(0); }

.mobile-menu-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: var(--sp-4);
}
.mobile-menu-close {
  background: none; border: none; color: var(--text-dim);
  font-size: 28px; cursor: pointer; padding: 4px; line-height: 1; transition: color 0.2s;
}
.mobile-menu-close:hover { color: var(--white); }

.mobile-menu-links { display: flex; flex-direction: column; gap: 0; }
.mobile-menu-links a {
  font-size: 16px; font-weight: 500; color: var(--text-dim);
  text-decoration: none; padding: 14px 0; border-bottom: 1px solid var(--border); transition: color 0.2s;
}
.mobile-menu-links a:last-child { border-bottom: none; }
.mobile-menu-links a:hover { color: var(--white); }
.mobile-menu-cta {
  display: block; background: var(--green); color: var(--bg) !important;
  padding: 14px !important; border-radius: 10px; text-align: center;
  font-weight: 700 !important; margin-top: var(--sp-3); border-bottom: none !important;
}

/* ============ SKIP LINK ============ */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 10000;
  padding: 8px 16px;
  background: var(--accent, var(--green));
  color: #0C0D12;
  font-weight: 700;
  border-radius: 0 0 8px 8px;
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
}

/* ============ CONTENT VISIBILITY ============ */
.related-section, .cta-section, footer {
  content-visibility: auto;
  contain-intrinsic-size: auto 400px;
}

/* ============ WILL-CHANGE HINTS ============ */
.related-card, .page-card, .scan-btn, .nav-cta { will-change: transform; }
.mega-panel { will-change: transform, opacity; }

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal, .stagger > * {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ============ PRINT ============ */
@media print {
  nav, footer, .skip-link, .cta-section, .scan-section, .mobile-menu-btn,
  .mega-panel, .theme-toggle { display: none !important; }
  body { background: white !important; color: black !important; }
  a[href]::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #666; }
  a[href^="#"]::after, a[href^="javascript"]::after { content: ""; }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .nav-links { display: none !important; }
  .nav-mobile { display: flex; }
}

@media (max-width: 700px) {
  .related-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .page-grid { grid-template-columns: 1fr; }
  .category-desc { display: none; }
  .mega-panel { width: 100%; max-width: calc(100vw - 24px); }
  .mega-content { grid-template-columns: 1fr; }
  .mega-sidebar { width: 160px; }
}

@media (max-width: 640px) {
  .mega-wrap { display: none; }

  .learn-hero { padding-top: 110px; padding-bottom: var(--sp-5); }

  .scan-form { flex-direction: column; }
  .scan-btn { width: 100%; padding: 14px; }

  .content-body h2 { margin-top: var(--sp-5); }
}
