:root {
  /* Dynamic Premium Palette - Matching App */
  --bg-dark: #0a0e17;
  --bg-panel: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --accent-primary: #00f2ff;
  --accent-secondary: #7000ff;
  --accent-glow: rgba(0, 242, 255, 0.4);
  --text-main: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.6);

  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  color: var(--text-main);
}

body {
  margin: 0;
  background: radial-gradient(circle at 50% -20%, #1a233a 0%, #0a0e17 60%);
  min-height: 100vh;
}

/* Glassmorphism Utilities */
.glass-panel {
  background: var(--bg-panel);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  border-radius: 20px;
}

header.hero {
  padding: 4rem 1rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Abstract background shapes */
header.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(112, 0, 255, 0.15) 0%, transparent 60%);
  z-index: -1;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.logo {
  width: 96px;
  height: 96px;
  margin-bottom: 1.5rem;
  filter: drop-shadow(0 0 20px rgba(0, 242, 255, 0.3));
  transition: transform 0.5s ease;
}

.logo:hover {
  transform: scale(1.05) rotate(5deg);
}

h1 {
  font-size: 4rem;
  font-weight: 800;
  margin: 0;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, #fff 30%, var(--accent-primary) 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 10px 30px rgba(0, 242, 255, 0.2);
}

.subtitle {
  font-size: 1.5rem;
  color: var(--text-muted);
  font-weight: 300;
  margin: 1.5rem auto 2.5rem;
  max-width: 600px;
}

/* Navigation */
nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

nav a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  transition: all 0.3s ease;
  padding: 0.5rem 1rem;
  border-radius: 8px;
}

nav a:hover {
  color: var(--accent-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* Buttons */
.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.5rem;
  background: linear-gradient(135deg, var(--accent-secondary), var(--accent-primary));
  color: white;
  text-decoration: none;
  border-radius: 12px;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 0 20px rgba(112, 0, 255, 0.4);
  transition: transform 0.2s, box-shadow 0.2s;
  font-size: 1.25rem;
}

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 242, 255, 0.5);
}

/* Main Content */
main {
  max-width: 1000px;
  margin: 0 auto 4rem;
  padding: 0 1rem;
}

section {
  margin-bottom: 4rem;
}

section h2 {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 2rem;
  color: var(--text-main);
  background: linear-gradient(to right, #fff, var(--text-muted));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

#overview p {
  text-align: center;
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  padding: 2rem;
  border-radius: 16px;
  text-align: center;
  transition: all 0.3s ease;
}

.feature-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-primary);
  transform: translateY(-5px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.feature-card .icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  display: inline-block;
  filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.2));
}

.feature-card h3 {
  color: var(--accent-primary);
  font-size: 1.4rem;
  margin: 0.5rem 0 1rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 1rem;
}

/* Screenshots */
img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  transition: transform 0.3s;
}

img:hover {
  transform: scale(1.02);
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  border-top: 1px solid var(--glass-border);
  margin-top: 4rem;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: #333;
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: #555;
}