@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&display=swap');

:root {
  --bg-darker: #0c0c0d;
  --bg: #161618;
  --bg-dark: #161618;
  --bg-light: #363838;
  --bg-lighter: #545656;
  --fg: #eff0f2;
  --fg-muted: #676a6a;
  --cyan: #3de5e8;
  --green: #007670;
  --orange: #E89B4C;
  --pink: #D06B9F;
  --purple: #9B8AE0;
  --red: #E85757;
  --yellow: #b2f5f3;
  --selection: #009a9c3d;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 154, 156, 0.12) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

::selection {
  background: var(--cyan);
  color: var(--bg-darker);
}

a {
  color: var(--cyan);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--pink);
}

/* ── Header ── */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(12, 12, 13, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 154, 156, 0.18);
  padding: 0 2rem;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--fg);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.logo img {
  height: 32px;
  width: 32px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav a {
  color: var(--fg-muted);
  font-weight: 400;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

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

.nav a.highlight {
  color: var(--cyan);
  font-weight: 600;
}

/* ── Hero ── */

.hero {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 160px 2rem 80px;
  min-height: 70vh;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--cyan) 0%, var(--green) 40%, var(--pink) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.hero p {
  color: var(--fg-muted);
  font-size: 1.2rem;
  font-weight: 300;
  max-width: 560px;
  margin-bottom: 2.5rem;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--cyan);
  color: var(--bg-darker);
}

.btn-primary:hover {
  background: var(--green);
  color: var(--bg-darker);
}

.btn-secondary {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--bg-lighter);
}

.btn-secondary:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn-icon {
  width: 18px;
  height: 18px;
}

/* ── Preview ── */

.preview-container {
  position: relative;
  margin-top: 3rem;
  max-width: 700px;
  width: 100%;
  animation: float 6s ease-in-out infinite;
}

.preview-container::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 12px;
  background: radial-gradient(ellipse at center, rgba(61, 229, 232, 0.25) 0%, transparent 70%);
  z-index: -1;
  filter: blur(40px);
}

.preview-container img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--bg-lighter);
}

/* ── Features ── */

.features {
  position: relative;
  z-index: 1;
  padding: 100px 2rem 120px;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-darker) 100%);
}

.features h2 {
  text-align: center;
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 3rem;
  letter-spacing: -0.02em;
}

.features-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-light);
  border: 1px solid var(--bg-lighter);
  border-radius: 12px;
  padding: 2rem;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0, 154, 156, 0.15);
  margin-bottom: 1.25rem;
  font-size: 1.4rem;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--fg);
}

.feature-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ── Footer ── */

.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2.5rem 2rem;
  border-top: 1px solid var(--bg-lighter);
  color: var(--fg-muted);
  font-size: 0.9rem;
}

.footer a {
  color: var(--cyan);
  font-weight: 500;
}

.footer a:hover {
  color: var(--pink);
}

/* ── Animations ── */

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotateX(0deg); }
  50% { transform: translateY(-8px) rotateX(1deg); }
}

/* ── Responsive ── */

@media (max-width: 768px) {
  .header {
    padding: 0 1rem;
  }

  .hero {
    padding: 120px 1rem 60px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .features {
    padding: 60px 1rem 80px;
  }

  .nav {
    gap: 1.25rem;
  }
}