/* CardSwitch Hub — Apple-inspired glassmorphism design system */

:root {
  --page-bg: #F5F5F7;
  --text-primary: #1D1D1F;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.85);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
  --grid-gap: 20px;
  --card-radius: 24px;
  --nav-radius: 16px;
  --transition: 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --accent-cardswitch: #667eea;
  --accent-payment: #0EA5E9;
  --accent-car: #334155;
  --accent-map: #EAB308;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font);
  background: var(--page-bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  padding: 8px 16px;
  background: var(--text-primary);
  color: #fff;
  border-radius: 8px;
  z-index: 9999;
  text-decoration: none;
}
.skip-link:focus { top: 16px; }

/* Ambient background orbs */
.ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
  animation: float 20s ease-in-out infinite;
}

.orb-a {
  width: 480px;
  height: 480px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  top: -120px;
  right: -80px;
}

.orb-b {
  width: 400px;
  height: 400px;
  background: linear-gradient(135deg, #0EA5E9 0%, #38BDF8 100%);
  bottom: 10%;
  left: -100px;
  animation-delay: -7s;
}

.orb-c {
  width: 320px;
  height: 320px;
  background: linear-gradient(135deg, #EAB308 0%, #F97316 100%);
  bottom: -80px;
  right: 20%;
  animation-delay: -14s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-20px, 15px) scale(0.95); }
}

/* Glass utility */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--glass-shadow);
}

/* Navigation */
.nav {
  position: fixed;
  top: 16px;
  left: 16px;
  right: 16px;
  z-index: 100;
  border-radius: var(--nav-radius);
  max-width: 960px;
  margin: 0 auto;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.05rem;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 0;
  margin: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: 8px;
  color: var(--text-primary);
  transition: background var(--transition);
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  background: rgba(0, 0, 0, 0.06);
  outline: none;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.nav-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text-primary);
  outline: none;
}

/* Main layout */
main {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 120px 24px 80px;
}

/* Hero */
.hero {
  text-align: center;
  margin-bottom: 72px;
}

.eyebrow {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-cardswitch), var(--accent-payment));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

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

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

/* Bento grid */
.bento-section {
  margin-bottom: 72px;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  text-align: center;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: minmax(220px, auto);
  gap: var(--grid-gap);
}

.bento-card {
  display: flex;
  flex-direction: column;
  padding: 28px;
  border-radius: var(--card-radius);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition:
    box-shadow var(--transition),
    border-color var(--transition),
    transform var(--transition);
  transform-style: preserve-3d;
  will-change: transform;
  position: relative;
  overflow: hidden;
}

.bento-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.bento-card[data-accent="cardswitch"]::before {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.08), rgba(118, 75, 162, 0.06));
}
.bento-card[data-accent="payment"]::before {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(56, 189, 248, 0.06));
}
.bento-card[data-accent="car"]::before {
  background: linear-gradient(135deg, rgba(51, 65, 85, 0.08), rgba(71, 85, 105, 0.05));
}
.bento-card[data-accent="map"]::before {
  background: linear-gradient(135deg, rgba(234, 179, 8, 0.1), rgba(249, 115, 22, 0.06));
}

.bento-card:hover::before,
.bento-card:focus-visible::before {
  opacity: 1;
}

.bento-card:hover,
.bento-card:focus-visible {
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
  outline: 2px solid rgba(102, 126, 234, 0.3);
  outline-offset: 2px;
}

.span-2 {
  grid-column: span 2;
}

.span-2-row {
  grid-column: span 2;
  grid-row: span 1;
}

.card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.card-icon svg {
  width: 100%;
  height: 100%;
}

.bento-card[data-accent="cardswitch"] .card-icon { color: var(--accent-cardswitch); }
.bento-card[data-accent="payment"] .card-icon { color: var(--accent-payment); }
.bento-card[data-accent="car"] .card-icon { color: var(--accent-car); }
.bento-card[data-accent="map"] .card-icon { color: var(--accent-map); }

.card-content {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-tag {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.card-content h3 {
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.card-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}

.card-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent-cardswitch);
  transition: gap var(--transition);
}

.bento-card[data-accent="payment"] .card-cta { color: var(--accent-payment); }
.bento-card[data-accent="car"] .card-cta { color: var(--accent-car); }
.bento-card[data-accent="map"] .card-cta { color: #CA8A04; }

.bento-card:hover .card-cta,
.bento-card:focus-visible .card-cta {
  gap: 10px;
}

.card-cta svg {
  width: 18px;
  height: 18px;
}

/* About section */
.about-section {
  margin-bottom: 48px;
}

.about-card {
  padding: 40px;
  border-radius: var(--card-radius);
  max-width: 720px;
  margin: 0 auto;
}

.about-card h2 {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.about-card p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.75;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.feature-list svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  color: var(--accent-payment);
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 32px 24px 48px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  margin-top: 8px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--text-primary);
}

/* Noscript fallback */
.noscript-fallback {
  position: fixed;
  inset: 0;
  background: #fff;
  z-index: 99999;
  padding: 40px;
  text-align: center;
}

.noscript-fallback ul {
  list-style: none;
  margin-top: 24px;
}

.noscript-fallback a {
  display: block;
  padding: 12px;
  color: var(--accent-cardswitch);
  font-size: 1.1rem;
}

/* Responsive */
@media (max-width: 900px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .span-2,
  .span-2-row {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-inner {
    flex-wrap: wrap;
    gap: 8px;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
    padding-top: 8px;
    margin-top: 4px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
  }

  .nav-open .nav-links {
    display: flex;
  }

  .nav-links a {
    padding: 12px 4px;
    font-size: 0.95rem;
  }
}

@media (max-width: 600px) {
  .bento-grid {
    grid-template-columns: 1fr;
  }
  .span-2,
  .span-2-row {
    grid-column: span 1;
  }
  .about-card { padding: 28px; }
  main { padding-top: 100px; }
}