:root {
  --primary: #4c669f;
  --secondary: #3b5998;
  --accent: #192f6a;
  --success: #10b981;
  --text: #0f172a;
  --text-light: #64748b;
  --bg: #ffffff;
  --bg-offset: #f8fafc;
  --border: #e2e8f0;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
  color: var(--text);
  background-color: var(--bg);
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4 {
  color: var(--accent);
  font-weight: 800;
  line-height: 1.2;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  text-align: center;
}

p {
  color: var(--text-light);
  font-size: 1.125rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header */
header {
  height: 80px;
  display: flex;
  align-items: center;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  padding: 10px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  transition: color 0.3s;
}

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

.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border-radius: 50px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  opacity: 0.9;
}

/* Hero Section */
.hero {
  padding: 180px 0 100px;
  background: radial-gradient(circle at top right, #f1f5f9, transparent);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: 4rem;
}

.hero-content {
  animation: slideInLeft 1s ease-out;
}

.hero-mockup {
  position: relative;
  animation: bounce 6s infinite ease-in-out;
}

.hero-mockup img {
  width: 100%;
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
}

/* Features Section */
.features {
  padding: 100px 0;
  background: var(--bg-offset);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
}

.feature-card {
  background: var(--bg);
  padding: 2.5rem;
  border-radius: 24px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  text-align: left;
}

.feature-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.icon-box {
  width: 60px;
  height: 60px;
  background: #eff6ff;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--primary);
}

.feature-card h3 {
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

/* Footer */
footer {
  padding: 80px 0 40px;
  background: var(--accent);
  color: white;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 40px;
  margin-bottom: 40px;
}

.footer-logo {
  color: white;
  font-size: 1.5rem;
  font-weight: 800;
  text-decoration: none;
}

.copyright {
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

/* Animations */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }

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

@keyframes bounce {

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

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

/* Responsive */
@media (max-width: 968px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  h1 {
    font-size: 2.5rem;
  }

  .nav-links {
    display: none;
  }
}