:root {
  --background: 220 25% 6%;
  --foreground: 210 40% 98%;
  --card: 220 20% 10%;
  --border: 220 15% 20%;
  --primary: 217 91% 60%;
  --secondary: 280 100% 65%;
  --accent: 180 100% 50%;
  --radius: 12px;
}

* {
  box-sizing: border-box
}

html,
body {
  height: 100%
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: hsl(var(--foreground));
  background: hsl(var(--background));
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0
}

.skip-link:focus {
  left: 16px;
  top: 16px;
  background: hsl(var(--foreground));
  color: hsl(var(--background));
  padding: 8px 12px;
  border-radius: 6px
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: saturate(180%) blur(8px);
  background: color-mix(in oklab, hsl(var(--background)) 80%, transparent);
  border-bottom: 1px solid hsl(var(--border));
  z-index: 50
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px
}

.brand {
  font-size: 20px;
  margin: 0;
  background: linear-gradient(90deg, hsl(var(--primary)), hsl(var(--secondary)));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent
}

/* Mobile menu toggle button */
.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 60;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: hsl(var(--foreground));
  transition: all 0.3s ease;
  border-radius: 2px;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile navigation - hidden by default */
.site-nav {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: hsl(var(--background));
  border-bottom: 1px solid hsl(var(--border));
  transform: translateY(-100%);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  z-index: 40;
  max-height: 0;
  overflow: hidden;
}

.site-nav.open {
  transform: translateY(0);
  opacity: 1;
  max-height: 400px;
}

.site-nav ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 16px;
}

.site-nav li {
  width: 100%;
}

.site-nav a {
  color: hsl(var(--foreground));
  text-decoration: none;
  display: block;
  padding: 12px;
  border-radius: 8px;
  transition: background 0.2s ease;
}

.site-nav a:hover {
  background: linear-gradient(122deg, #7742a4, #1a2f51);
}

/* Desktop styles */
@media (min-width: 768px) {
  .mobile-menu-toggle {
    display: none;
  }

  .site-nav {
    position: static;
    transform: none;
    opacity: 1;
    background: transparent;
    border: none;
    max-height: none;
    overflow: visible;
  }

  .site-nav ul {
    flex-direction: row;
    gap: 16px;
    padding: 0;
  }

  .site-nav li {
    width: auto;
  }

  .site-nav a {
    padding: 0;
  }
}

.site-nav a:focus-visible,
.btn:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid hsl(var(--primary));
  outline-offset: 2px
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid hsl(var(--border));
  background: transparent;
  color: hsl(var(--foreground));
  cursor: pointer;
  transition: transform .15s ease, opacity .2s ease
}

.btn:hover {
  transform: translateY(-1px)
}

.btn.full {
  width: 100%
}

.btn-primary {
  background: linear-gradient(90deg, hsl(var(--primary)), hsl(var(--secondary)));
  border-color: transparent;
  box-shadow: 0 0 30px hsl(var(--primary) / .35);
  text-decoration: none;
}

.btn-primary:hover {
  opacity: .9
}

.btn-outline {
  background: transparent;
  border-color: hsl(var(--primary) / .3);
  text-decoration: none;
}

.gradient-hero {
  position: relative;
  background: radial-gradient(ellipse at top, hsl(var(--primary) / .15), transparent 60%), linear-gradient(180deg, hsl(var(--background)), hsl(var(--card)))
}

.hero {
  min-height: 88vh;
  display: grid;
  place-items: center;
  overflow: hidden
}

.hero-inner {
  text-align: center;
  padding: 80px 0
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid hsl(var(--primary) / .3);
  background: hsl(var(--card));
  color: hsl(var(--foreground) / .8);
  font-size: 14px;
  box-shadow: 0 0 30px hsl(var(--primary) / .2)
}

.badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: hsl(var(--primary));
  animation: pulse 2s infinite
}

.hero-title {
  font-size: clamp(40px, 6vw, 84px);
  margin: 16px 0;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, hsl(var(--primary)), hsl(var(--secondary)), hsl(var(--accent)));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent
}

.hero-subtitle {
  max-width: 880px;
  margin: 0 auto;
  font-size: clamp(18px, 2.4vw, 24px);
  color: hsl(var(--foreground) / .8)
}

.highlight {
  color: hsl(var(--foreground));
  font-weight: 600
}

.cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  padding-top: 24px;
  flex-wrap: wrap
}

.stats {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: 24px;
  max-width: 800px;
  margin: 40px auto 0
}

@media (min-width: 768px) {
  .stats {
    grid-template-columns: repeat(3, 1fr)
  }
}

.stat-value {
  font-size: 36px;
  font-weight: 700
}

.stat-value.primary {
  color: hsl(var(--primary))
}

.stat-value.secondary {
  color: hsl(var(--secondary))
}

.stat-value.accent {
  color: hsl(var(--accent))
}

.stat-label {
  font-size: 14px;
  color: hsl(var(--foreground) / .7)
}

.orb {
  position: absolute;
  border-radius: 9999px;
  filter: blur(40px);
  animation: float 6s ease-in-out infinite
}

.orb-1 {
  width: 280px;
  height: 280px;
  left: 5%;
  top: 15%;
  background: hsl(var(--primary) / .25)
}

.orb-2 {
  width: 380px;
  height: 380px;
  right: 6%;
  bottom: 10%;
  background: hsl(var(--secondary) / .2);
  animation-delay: 2s
}

.section {
  padding: 96px 0
}

.section.alt {
  background: linear-gradient(180deg, hsl(var(--card) / .35), transparent)
}

.section-header {
  text-align: center;
  max-width: 840px;
  margin: 0 auto 40px
}

.section-title {
  font-size: clamp(32px, 5vw, 60px);
  margin: 0 0 8px
}

.section-subtitle {
  font-size: 20px;
  color: hsl(var(--foreground) / .75);
  margin: 0
}

.grid {
  display: grid;
  gap: 24px
}

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

.grid-4 {
  grid-template-columns: repeat(1, 1fr)
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr)
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr)
  }
}

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr)
  }
}

.card {
  background: color-mix(in oklab, hsl(var(--card)) 85%, transparent);
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(6px);
  transition: border-color .2s ease
}

.card:hover {
  border-color: hsl(var(--primary) / .5)
}

.icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  margin-bottom: 16px;
  display: grid;
  place-items: center;
  color: #fff
}

.icon svg {
  width: 32px;
  height: 32px
}

.bg-primary {
  background: linear-gradient(135deg, hsl(var(--primary)), hsl(var(--primary) / .5))
}

.bg-secondary {
  background: linear-gradient(135deg, hsl(var(--secondary)), hsl(var(--secondary) / .5))
}

.bg-accent {
  background: linear-gradient(135deg, hsl(var(--accent)), hsl(var(--accent) / .5))
}

.bg-gradient {
  background: linear-gradient(90deg, hsl(var(--primary)), hsl(var(--secondary)), hsl(var(--accent)))
}

.card-title {
  font-size: 28px;
  margin: 12px 0
}

.card-desc {
  color: hsl(var(--foreground) / .75)
}

.list {
  list-style: none;
  padding: 0;
  margin: 16px 0 0
}

.bullet {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin-right: 8px
}

.stage {
  background: color-mix(in oklab, hsl(var(--card)) 85%, transparent);
  border: 1px solid hsl(var(--border));
  border-radius: 20px;
  padding: 24px;
  height: 100%;
  transition: border-color .2s ease
}

.stage:hover {
  border-color: hsl(var(--primary) / .5)
}

.step {
  font-size: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  color: hsl(var(--foreground) / .6)
}

.stage-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  margin: 10px 0;
  display: grid;
  place-items: center;
  color: #fff
}

.stage-icon svg {
  width: 28px;
  height: 28px
}

.stage-title {
  font-size: 24px;
  margin: 8px 0
}

.stage-desc {
  color: hsl(var(--foreground) / .75);
  font-size: 14px
}

.stack {
  display: grid;
  gap: 32px
}

.stack-card {
  position: relative
}

.stack-card::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 24px;
  background: linear-gradient(90deg, hsl(var(--primary) / .2), hsl(var(--secondary) / .2));
  filter: blur(14px);
  opacity: 0;
  transition: opacity .4s ease;
  pointer-events: none
}

.stack-card:hover::before {
  opacity: 1
}

.stack-card>.stack-content {
  position: relative;
  background: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  border-radius: 24px;
  padding: 24px
}

.stack-card {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 24px
}

.stack-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  display: grid;
  place-items: center;
  color: #fff
}

.stack-icon svg {
  width: 40px;
  height: 40px
}

.stack-title {
  font-size: 28px;
  margin: 0 0 8px
}

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

@media (min-width: 768px) {
  .features {
    grid-template-columns: repeat(3, 1fr)
  }
}

.feature h4 {
  margin: 0;
  font-weight: 600
}

.feature p {
  margin: 0;
  color: hsl(var(--foreground) / .75)
}

.site-footer {
  border-top: 1px solid hsl(var(--border));
  padding: 48px 0
}

.footer-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(1, 1fr);
  margin-bottom: 24px
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(3, 1fr)
  }
}

.footer-bottom {
  border-top: 1px solid hsl(var(--border) / .3);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px
}

.muted {
  color: hsl(var(--foreground) / .7)
}

.small {
  font-size: 12px
}

.gradient-text {
  background: linear-gradient(90deg, hsl(var(--primary)), hsl(var(--secondary)));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent
}

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 100;
}

.modal[aria-hidden="true"] {
  display: none
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: hsl(var(--background) / .6)
}

.modal-content {
  position: relative;
  background: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  border-radius: 20px;
  padding: 24px;
  width: min(800px, calc(100% - 32px));
  max-height: calc(100% - 32px);
  overflow: auto
}

.site-nav li a {
  padding: 5px;
}

.modal-close {
  position: absolute;
  right: 12px;
  top: 12px;
  background: transparent;
  border: 1px solid hsl(var(--border));
  border-radius: 999px;
  width: 32px;
  height: 32px;
  color: hsl(var(--foreground));
  cursor: pointer
}

.modal-header {
  text-align: center;
  margin-bottom: 16px
}

.modal-icon {
  width: 64px;
  height: 64px;
  border-radius: 999px;
  margin: 0 auto 12px;
  background: linear-gradient(135deg, hsl(var(--primary)), hsl(var(--secondary)))
}

form {
  display: grid;
  gap: 16px
}

.form-field {
  display: grid;
  gap: 8px
}

label {
  font-weight: 600
}

input,
textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid hsl(var(--border));
  background: hsl(var(--card) / .5);
  color: hsl(var(--foreground))
}

input::placeholder,
textarea::placeholder {
  color: hsl(var(--foreground) / .5)
}

.field-error {
  min-height: 18px;
  color: #ff6b6b;
  font-size: 13px
}

.status {
  min-height: 22px;
  font-size: 14px
}

.loading {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid hsl(var(--foreground) / .3);
  border-top-color: hsl(var(--foreground));
  border-radius: 999px;
  animation: spin .8s linear infinite
}

.btn[aria-busy="true"] .loading {
  display: inline-block
}

.btn[aria-busy="true"] .btn-text {
  opacity: .6
}

@keyframes pulse {

  0%,
  100% {
    opacity: .7
  }

  50% {
    opacity: 1
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0)
  }

  50% {
    transform: translateY(-20px)
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px)
  }

  to {
    opacity: 1;
    transform: translateY(0)
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg)
  }
}

.fade-in-up {
  animation: fadeInUp .8s ease both
}