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

:root {
  --color-bg: #0b0f1a;
  --color-surface: #0f1525;
  --color-border: #1a2540;
  --color-text: #e2e8f0;
  --color-muted: #8b9ec2;
  --color-accent: #5eead4;
  --color-accent-hover: #99f6e4;
  --aurora-green: #22d3a7;
  --aurora-teal: #2dd4bf;
  --aurora-blue: #38bdf8;
  --aurora-purple: #a78bfa;
  --aurora-pink: #e879f9;
  --radius: 14px;
  --container: 1100px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Header ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(11, 15, 26, .85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

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

.logo {
  display: inline-flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
}

.logo-icon {
  width: 28px;
  height: 28px;
  margin-right: 6px;
  flex-shrink: 0;
}

.logo-icon--lg {
  width: 40px;
  height: 40px;
}

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

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav a {
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color .2s;
}

.nav a.btn {
  color: #fff;
}

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

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  background: linear-gradient(135deg, #14b892, #11a6a6);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius);
  transition: background .2s, transform .15s, box-shadow .3s;
  border: none;
}

.btn:hover {
  background: linear-gradient(135deg, #0f9b7a, #0d8e8e);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(45, 212, 191, .25);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.btn-outline:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: linear-gradient(180deg, #050a18 0%, #0b1228 40%, #0b0f1a 100%);
}

/* Aurora bands */
.aurora {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.aurora-band {
  position: absolute;
  width: 140%;
  left: -20%;
  height: 40%;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  mix-blend-mode: screen;
}

.aurora-band--1 {
  top: -5%;
  background: linear-gradient(90deg, var(--aurora-green), var(--aurora-teal), var(--aurora-blue));
  animation: aurora-drift 12s ease-in-out infinite alternate;
}

.aurora-band--2 {
  top: 5%;
  background: linear-gradient(90deg, var(--aurora-blue), var(--aurora-purple), var(--aurora-pink));
  animation: aurora-drift 16s ease-in-out infinite alternate-reverse;
  opacity: 0.2;
}

.aurora-band--3 {
  top: -10%;
  background: linear-gradient(90deg, var(--aurora-teal), var(--aurora-green));
  animation: aurora-drift 10s ease-in-out infinite alternate;
  opacity: 0.15;
}

@keyframes aurora-drift {
  0%   { transform: translateX(-8%) scaleY(1) rotate(-2deg); }
  100% { transform: translateX(8%) scaleY(1.3) rotate(2deg); }
}

/* Stars */
.stars {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1.5px 1.5px at 10% 15%, rgba(255,255,255,.6), transparent),
    radial-gradient(3px 3px at 25% 35%, rgba(255,255,255,.5), transparent),
    radial-gradient(4.5px 4.5px at 40% 8%, rgba(255,255,255,.85), transparent),
    radial-gradient(1.5px 1.5px at 55% 25%, rgba(255,255,255,.4), transparent),
    radial-gradient(3.5px 3.5px at 70% 12%, rgba(255,255,255,.6), transparent),
    radial-gradient(2px 2px at 85% 30%, rgba(255,255,255,.7), transparent),
    radial-gradient(4px 4px at 15% 50%, rgba(255,255,255,.3), transparent),
    radial-gradient(1.5px 1.5px at 60% 45%, rgba(255,255,255,.5), transparent),
    radial-gradient(3px 3px at 90% 50%, rgba(255,255,255,.4), transparent),
    radial-gradient(2px 2px at 35% 55%, rgba(255,255,255,.35), transparent),
    radial-gradient(5px 5px at 78% 5%, rgba(255,255,255,.55), transparent),
    radial-gradient(2.5px 2.5px at 5% 40%, rgba(255,255,255,.45), transparent),
    radial-gradient(1.5px 1.5px at 18% 6%, rgba(255,255,255,.55), transparent),
    radial-gradient(4px 4px at 32% 20%, rgba(255,255,255,.35), transparent),
    radial-gradient(2px 2px at 48% 42%, rgba(255,255,255,.6), transparent),
    radial-gradient(3.5px 3.5px at 62% 10%, rgba(255,255,255,.5), transparent),
    radial-gradient(1.5px 1.5px at 73% 38%, rgba(255,255,255,.35), transparent),
    radial-gradient(3px 3px at 88% 18%, rgba(255,255,255,.55), transparent),
    radial-gradient(2px 2px at 95% 42%, rgba(255,255,255,.3), transparent),
    radial-gradient(4.5px 4.5px at 3% 28%, rgba(255,255,255,.4), transparent),
    radial-gradient(2px 2px at 22% 48%, rgba(255,255,255,.45), transparent),
    radial-gradient(3px 3px at 42% 30%, rgba(255,255,255,.55), transparent),
    radial-gradient(1.5px 1.5px at 52% 52%, rgba(255,255,255,.3), transparent),
    radial-gradient(5px 5px at 67% 28%, rgba(255,255,255,.5), transparent),
    radial-gradient(2.5px 2.5px at 80% 48%, rgba(255,255,255,.4), transparent),
    radial-gradient(3.5px 3.5px at 8% 58%, rgba(255,255,255,.35), transparent),
    radial-gradient(2px 2px at 45% 18%, rgba(255,255,255,.7), transparent),
    radial-gradient(4px 4px at 58% 38%, rgba(255,255,255,.4), transparent),
    radial-gradient(1.5px 1.5px at 28% 60%, rgba(255,255,255,.3), transparent),
    radial-gradient(3px 3px at 82% 8%, rgba(255,255,255,.55), transparent),
    radial-gradient(2.5px 2.5px at 93% 32%, rgba(255,255,255,.4), transparent);
  animation: twinkle 6s ease-in-out infinite alternate;
}

@keyframes twinkle {
  0%   { opacity: .7; }
  50%  { opacity: 1; }
  100% { opacity: .8; }
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 160px 0 200px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, var(--aurora-green), var(--aurora-teal), var(--aurora-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  max-width: 620px;
  margin: 0 auto 40px;
  font-size: 1.15rem;
  color: var(--color-muted);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Mountain silhouette */
.hero-mountains {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1;
  line-height: 0;
}

.hero-mountains svg {
  width: 100%;
  height: auto;
  display: block;
}

/* ---- Section Eyebrow ---- */
.section-eyebrow {
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  background: linear-gradient(90deg, var(--aurora-green), var(--aurora-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

/* ---- Services ---- */
.services {
  padding: 100px 0;
}

.services h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 56px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: border-color .25s, transform .2s, box-shadow .3s;
  position: relative;
}

.card:hover {
  border-color: var(--aurora-teal);
  transform: translateY(-4px);
  box-shadow: 0 0 30px rgba(45, 212, 191, .08);
}

.card-icon {
  width: 44px;
  height: 44px;
  margin-bottom: 20px;
  color: var(--color-accent);
}

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

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.card p {
  color: var(--color-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---- About ---- */
.about {
  padding: 100px 0;
  background: var(--color-surface);
  position: relative;
}

.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--aurora-green), var(--aurora-blue), transparent);
}

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

.about-text h2 {
  font-size: 2rem;
  margin-bottom: 24px;
}

.about-text p {
  color: var(--color-muted);
  margin-bottom: 16px;
  line-height: 1.7;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--aurora-green), var(--aurora-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-top: 4px;
}

/* ---- Contact ---- */
.contact {
  padding: 120px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(34, 211, 167, .06), transparent 70%);
  pointer-events: none;
}

.contact h2 {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.contact p {
  color: var(--color-muted);
  margin-bottom: 36px;
  font-size: 1.1rem;
  position: relative;
}

/* ---- Footer ---- */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 28px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-muted);
}

/* ---- Mobile ---- */
@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    display: none;
  }

  .nav.open {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}