/* ==========================================================================
   layout.css — Header, Hero, Sections, Grids, Footer
   ========================================================================== */

/* ==========================================================================
   HEADER
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background: rgba(6, 6, 14, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  height: 72px;
}

[data-theme="light"] .site-header {
  background: rgba(250, 250, 250, 0.8);
}

.site-header__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
@media (min-width: 768px) {
  .site-header__inner { padding-inline: 40px; }
}

.site-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--text-primary);
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity var(--duration) var(--ease);
}
.site-logo:hover { opacity: 0.7; color: var(--text-primary); }

/* Nav */
.site-nav .nav-list {
  display: flex;
  gap: 32px;
  list-style: none;
}

.site-nav .nav-list a {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.9rem;
  transition: color var(--duration) var(--ease);
  white-space: nowrap;
}
.site-nav .nav-list a:hover,
.site-nav .nav-list a[aria-current="page"] {
  color: var(--text-primary);
}

/* Header actions */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 8px;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: color var(--duration) var(--ease);
}
.theme-toggle:hover { color: var(--text-primary); }

/* Burger */
.burger-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  padding: 8px;
  width: 40px;
  height: 40px;
}

/* ==========================================================================
   MOBILE NAV
   ========================================================================== */

@media (max-width: 767px) {
  .burger-toggle { display: flex; }

  .site-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(6, 6, 14, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    flex-direction: column;
    padding: 32px;
    transform: translateX(-100%);
    transition: transform var(--duration) var(--ease);
    z-index: 49;
    overflow-y: auto;
  }

  [data-theme="light"] .site-nav {
    background: rgba(250, 250, 250, 0.97);
  }

  .site-nav.is-open { transform: translateX(0); }
  .site-nav .nav-list { flex-direction: column; gap: 24px; }
  .site-nav .nav-list a { font-size: 1.25rem; }
}

/* ==========================================================================
   HERO — Full viewport, massive typography
   ========================================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--bg-primary);
  padding: 120px 20px 80px;
}

/* Mesh gradient background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-mesh);
  pointer-events: none;
}

/* Animated orb */
.hero::after {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
  animation: orbPulse 6s ease-in-out infinite;
  pointer-events: none;
}

@keyframes orbPulse {
  0%, 100% { transform: translateX(-50%) scale(1); opacity: 0.5; }
  50% { transform: translateX(-50%) scale(1.2); opacity: 0.8; }
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  color: var(--text-primary);
  max-width: 900px;
  margin: 0 auto;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 24px auto 48px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 80px;
}

.hero__stats {
  padding-top: 60px;
  border-top: 1px solid var(--border);
}

@media (max-width: 767px) {
  .hero { min-height: 90vh; padding: 100px 20px 60px; }
  .hero__actions { margin-bottom: 48px; }
  .hero__stats { padding-top: 40px; }
}

/* ==========================================================================
   SECTIONS
   ========================================================================== */

.section {
  padding: var(--space-section) 0;
  position: relative;
}

.section--mesh {
  background: var(--gradient-mesh), var(--bg-primary);
}

.section__header {
  margin-bottom: clamp(48px, 6vw, 80px);
}

.section__label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 16px;
}

.section__title {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--text-primary);
  max-width: 700px;
}

.section__title--center {
  text-align: center;
  margin-inline: auto;
}

.section__subtitle {
  color: var(--text-secondary);
  max-width: 600px;
  margin-top: 16px;
  font-size: 1.1rem;
  line-height: 1.7;
}

.section__subtitle--center {
  text-align: center;
  margin-inline: auto;
}

/* ==========================================================================
   BENTO GRID
   ========================================================================== */

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.bento-grid--2x3 {
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
}

.bento-card--wide {
  grid-column: span 2;
}

@media (max-width: 1023px) {
  .bento-grid { grid-template-columns: repeat(2, 1fr); }
  .bento-card--wide { grid-column: span 2; }
}

@media (max-width: 639px) {
  .bento-grid { grid-template-columns: 1fr; }
  .bento-card--wide { grid-column: span 1; }
}

/* ==========================================================================
   STANDARD GRIDS
   ========================================================================== */

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }

@media (max-width: 1023px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ==========================================================================
   TIMELINE (How to order)
   ========================================================================== */

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

.timeline::before {
  content: '';
  position: absolute;
  top: 36px;
  left: calc(16.66% + 12px);
  right: calc(16.66% + 12px);
  height: 1px;
  background: var(--border);
}

.timeline__item {
  text-align: center;
  position: relative;
}

.timeline__number {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  margin: 0 auto 24px;
  position: relative;
  z-index: 1;
  transition: all var(--duration) var(--ease);
}

.timeline__item:hover .timeline__number {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 30px var(--accent-glow);
}

.timeline__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.timeline__desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 280px;
  margin-inline: auto;
}

@media (max-width: 767px) {
  .timeline { grid-template-columns: 1fr; gap: 40px; }
  .timeline::before { display: none; }
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  background: var(--bg-primary);
  color: var(--text-secondary);
  padding: 80px 0 40px;
  border-top: 1px solid var(--border);
}

.site-footer a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}
.site-footer a:hover { color: var(--text-primary); }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

@media (max-width: 1023px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 639px) { .footer-grid { grid-template-columns: 1fr; gap: 40px; } }

.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { font-size: 0.95rem; }

.footer-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.footer-col > p {
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 300px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  margin-top: 48px;
  padding-top: 32px;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ==========================================================================
   BREADCRUMBS
   ========================================================================== */

.breadcrumbs { padding: 16px 0; }
.breadcrumbs ol {
  display: flex; flex-wrap: wrap; gap: 8px;
  list-style: none; font-size: 0.85rem; color: var(--text-muted);
}
.breadcrumbs li:not(:last-child)::after {
  content: "/"; margin-left: 8px; color: var(--border);
}
.breadcrumbs a { color: var(--text-muted); transition: color var(--duration) var(--ease); }
.breadcrumbs a:hover { color: var(--accent); }

/* ==========================================================================
   MOBILE CTA BAR
   ========================================================================== */

.mobile-cta { display: none; }

@media (max-width: 767px) {
  .mobile-cta {
    display: block;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px 16px;
    background: rgba(6, 6, 14, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border);
    z-index: 40;
  }
  [data-theme="light"] .mobile-cta { background: rgba(255, 255, 255, 0.95); }
  .mobile-cta .btn { width: 100%; }
}