/* ---------- Custom Properties (Dark — default) ---------- */
:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #141414;
  --bg-card-hover: #1a1a1a;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --accent-green: #10b981;
  --accent-green-dark: #059669;
  --accent-green-glow: rgba(16, 185, 129, 0.15);
  --border-color: #222222;
  --border-hover: #333333;
  --nav-bg: rgba(10, 10, 10, 0.85);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.5);
  --logo-filter: none;
}

/* ---------- Custom Properties (Light theme) ---------- */
html[data-theme="light"] {
  --bg-primary: #f5f5f7;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #f9f9fb;
  --text-primary: #111111;
  --text-secondary: #555555;
  --text-muted: #999999;
  --accent-green: #059669;
  --accent-green-dark: #047857;
  --accent-green-glow: rgba(5, 150, 105, 0.12);
  --border-color: #e0e0e0;
  --border-hover: #cccccc;
  --nav-bg: rgba(255, 255, 255, 0.92);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.1);
  --logo-filter: none;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

ul, ol {
  list-style: none;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

/* ---------- Utility ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.938rem;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.btn-primary {
  background: var(--accent-green);
  color: #fff;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.25);
}
.btn-primary:hover {
  background: var(--accent-green-dark);
  box-shadow: 0 0 30px rgba(16, 185, 129, 0.4);
  transform: translateY(-1px);
}

.btn-outline {
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
  background: var(--accent-green-glow);
}

.btn-text {
  color: var(--text-secondary);
  padding: 14px 8px;
  background: transparent;
}
.btn-text:hover {
  color: var(--accent-green);
}

/* ---------- Badge Pills ---------- */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.08);
  color: var(--accent-green);
  text-transform: uppercase;
}

/* ---------- Section label ---------- */
.section-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}
.nav.scrolled {
  background: rgba(10, 10, 10, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.nav-logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}
.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.nav-logo-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.nav-logo-sub {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}
.nav-links a:hover {
  color: var(--text-primary);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-green);
  transition: var(--transition);
  border-radius: 1px;
}
.nav-links a:hover::after {
  width: 100%;
}

/* Nav actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.nav-actions .btn-text {
  font-size: 0.875rem;
  padding: 8px 12px;
}
.nav-actions .btn-primary {
  font-size: 0.813rem;
  padding: 10px 20px;
}

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  padding: 140px 0 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

/* Ambient glow behind hero */
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

/* Hero left */
.hero-left {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* Hero right — Credential Card */
.hero-right {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

/* Green ambient glow behind the card */
.hero-right::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.12) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.cred-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 440px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  animation: cardFloat 6s ease-in-out infinite;
  box-shadow: 
    0 0 40px rgba(16, 185, 129, 0.07),
    0 20px 60px rgba(0, 0, 0, 0.5);
}
.cred-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  padding: 1px;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.3), transparent 50%, rgba(16, 185, 129, 0.1));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

@keyframes cardFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}

.cred-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}
.cred-card-id {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
}
.cred-card-badge {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-green);
  background: var(--accent-green-glow);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

/* Credential rows */
.cred-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(34, 34, 34, 0.6);
}
.cred-row:last-of-type {
  border-bottom: none;
}
.cred-row-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.cred-row-info {
  flex: 1;
  min-width: 0;
}
.cred-row-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.cred-row-value {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
  overflow: hidden;
  white-space: nowrap;
}
.cred-row-value .typing-cursor {
  display: inline-block;
  width: 2px;
  height: 14px;
  background: var(--accent-green);
  margin-left: 2px;
  animation: blink 1s step-end infinite;
  vertical-align: middle;
}
@keyframes blink {
  50% { opacity: 0; }
}

.cred-row-hidden {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
}

.cred-card-footer {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}
.cred-card-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-green);
  margin-bottom: 14px;
}
.cred-card-status svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.cred-card-steps {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cred-step {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.cred-step.active {
  color: var(--accent-green);
}
.cred-step-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--border-color);
  flex-shrink: 0;
  transition: var(--transition);
}
.cred-step.active .cred-step-dot {
  background: var(--accent-green);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
}

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar {
  padding: 48px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1;
}
.stat-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ============================================================
   MARQUEE
   ============================================================ */
.marquee {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
  padding: 16px 0;
  position: relative;
}
.marquee::before,
.marquee::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 80px;
  z-index: 2;
  pointer-events: none;
}
.marquee::before {
  left: 0;
  background: linear-gradient(90deg, var(--bg-secondary), transparent);
}
.marquee::after {
  right: 0;
  background: linear-gradient(-90deg, var(--bg-secondary), transparent);
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marqueeScroll 30s linear infinite;
}
@keyframes marqueeScroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.marquee-content {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
}
.marquee-tag {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
  padding: 0 20px;
}
.marquee-dot {
  color: var(--accent-green);
  font-size: 0.5rem;
  flex-shrink: 0;
}

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.how-it-works {
  padding: 120px 0;
}
.how-heading {
  text-align: center;
  margin-bottom: 64px;
}
.how-heading h2 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 600px;
  margin: 0 auto;
}

.how-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.how-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.how-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}
.how-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(16, 185, 129, 0.3), transparent);
  opacity: 0;
  transition: var(--transition);
}
.how-card:hover::before {
  opacity: 1;
}

.how-card-number {
  font-size: 3rem;
  font-weight: 900;
  color: rgba(16, 185, 129, 0.15);
  line-height: 1;
  margin-bottom: 20px;
  letter-spacing: -0.04em;
}
.how-card h3 {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.4;
}
.how-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================================
   SECURITY
   ============================================================ */
.security {
  padding: 120px 0;
  border-top: 1px solid var(--border-color);
}
.security-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
.security-left h2 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 20px;
}
.security-left p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 460px;
}

.security-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.security-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: var(--transition);
}
.security-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.security-card-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-green-glow);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  color: var(--accent-green);
}
.security-card-icon svg {
  width: 20px;
  height: 20px;
}
.security-card h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.security-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ============================================================
   PLATFORMS
   ============================================================ */
.platforms {
  padding: 120px 0;
  border-top: 1px solid var(--border-color);
}
.platforms-heading {
  text-align: center;
  margin-bottom: 64px;
}
.platforms-heading h2 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}
.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}
.platform-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition);
  cursor: default;
}
.platform-item:hover {
  border-color: var(--accent-green);
  transform: scale(1.05);
  box-shadow: 0 0 24px rgba(16, 185, 129, 0.12);
}
.platform-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}
.platform-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

/* ============================================================
   CTA
   ============================================================ */
.cta-section {
  padding: 120px 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
}
.cta-section h2 {
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
}
.cta-section .cta-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
}
.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-color);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-logo svg {
  width: 28px;
  height: 28px;
}
.footer-logo-text {
  display: flex;
  flex-direction: column;
}
.footer-logo-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}
.footer-logo-sub {
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.footer-security {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.footer-copy {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ============================================================
   SCROLL REVEAL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Staggered children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.15s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.25s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.35s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 0.45s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(6) { transition-delay: 0.55s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(7) { transition-delay: 0.65s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(8) { transition-delay: 0.75s; opacity: 1; transform: translateY(0); }

/* ============================================================
   MOBILE NAV OVERLAY
   ============================================================ */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(10, 10, 10, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.mobile-menu.open {
  display: flex;
  opacity: 1;
  pointer-events: all;
}
.mobile-menu a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
}
.mobile-menu a:hover {
  color: var(--accent-green);
}
.mobile-menu-close {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 1.5rem;
  color: var(--text-secondary);
  cursor: pointer;
  background: none;
  border: none;
  padding: 8px;
}

/* ============================================================
   RESPONSIVE — 1024px
   ============================================================ */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.75rem;
  }
  .hero-grid {
    gap: 40px;
  }
  .how-heading h2,
  .security-left h2,
  .platforms-heading h2,
  .cta-section h2 {
    font-size: 2rem;
  }
  .security-grid {
    gap: 48px;
  }
}

/* ============================================================
   RESPONSIVE — 768px
   ============================================================ */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-actions {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 120px 0 60px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-right {
    order: -1;
  }
  .cred-card {
    max-width: 380px;
  }

  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .stat-value {
    font-size: 1.8rem;
  }

  .how-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .security-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .platform-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================================
   RESPONSIVE — 480px
   ============================================================ */
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-title {
    font-size: 1.85rem;
  }
  .hero-subtitle {
    font-size: 0.95rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .security-features {
    grid-template-columns: 1fr;
  }

  .cta-section h2 {
    font-size: 1.6rem;
  }
  .cta-actions {
    flex-direction: column;
  }
  .cta-actions .btn {
    width: 100%;
  }

  .how-heading h2,
  .security-left h2,
  .platforms-heading h2 {
    font-size: 1.6rem;
  }
}

/* ============================================================
   THEME TOGGLE BUTTON
   ============================================================ */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
  background: var(--accent-green-glow);
  transform: scale(1.05);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 1rem;
}

/* Dark mode: show sun icon (to switch to light) */
.theme-toggle .icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}
.theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

/* Light mode: show moon icon (to switch to dark) */
html[data-theme="light"] .theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}
html[data-theme="light"] .theme-toggle .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* Navbar logo image */
.navbar-logo-img {
  height: 32px;
  width: auto;
  display: inline-block;
  filter: var(--logo-filter);
}

.nav-logo-img {
  height: 36px;
  width: auto;
  display: inline-block;
}

.footer-logo-img {
  height: 28px;
  width: auto;
  display: inline-block;
}

/* ============================================================
   LIGHT THEME — Landing Page Overrides
   ============================================================ */
html[data-theme="light"] .nav {
  background: var(--nav-bg);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

html[data-theme="light"] .hero-mockup-window {
  background: var(--bg-card);
  border-color: var(--border-color);
  box-shadow: var(--shadow-lg);
}

html[data-theme="light"] .hero-mockup-titlebar {
  background: var(--bg-secondary);
}

html[data-theme="light"] .hero-mockup-row {
  background: var(--bg-primary);
  border-color: var(--border-color);
}

html[data-theme="light"] .step-card {
  background: var(--bg-card);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

html[data-theme="light"] .security-panel {
  background: var(--bg-card);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

html[data-theme="light"] .security-feature {
  border-color: var(--border-color);
}

html[data-theme="light"] .ticker-track span {
  color: var(--text-muted);
}

html[data-theme="light"] .platform-card {
  background: var(--bg-card);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

html[data-theme="light"] .platform-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

html[data-theme="light"] .cta-section {
  background: var(--bg-secondary);
  border-color: var(--border-color);
}

html[data-theme="light"] .footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

html[data-theme="light"] .btn-outline {
  border-color: var(--border-color);
  color: var(--text-secondary);
}

html[data-theme="light"] .btn-outline:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: rgba(0,0,0,0.03);
}

html[data-theme="light"] .btn-text {
  color: var(--text-secondary);
}

html[data-theme="light"] .hero-badge {
  background: var(--accent-green-glow);
  border-color: rgba(5,150,105,0.2);
}

html[data-theme="light"] .stat-value {
  color: var(--text-primary);
}

/* Light theme — security section left panel */
html[data-theme="light"] .security-left {
  background: var(--bg-card);
  border-color: var(--border-color);
}