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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --text: #1e293b;
  --text-light: #64748b;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e2e8f0;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: var(--bg);
}

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

a:hover {
  text-decoration: underline;
}

/* Header */
.header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav a {
  color: var(--text-light);
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--primary);
  text-decoration: none;
}

/* Hero */
.hero {
  text-align: center;
  padding: 5rem 2rem;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--bg) 100%);
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text);
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* Signup Form */
.signup-form {
  max-width: 500px;
  margin: 0 auto;
  background: var(--bg);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.signup-form h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
  color: var(--text);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  width: 100%;
  text-align: center;
}

.btn:hover {
  background: var(--primary-dark);
  text-decoration: none;
}

/* Features */
.features {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

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

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

.feature-card {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
}

.feature-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-light);
  font-size: 0.95rem;
}

/* Legal Pages */
.legal {
  max-width: 800px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.legal h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.legal .last-updated {
  color: var(--text-light);
  font-size: 0.875rem;
  margin-bottom: 2rem;
}

.legal h2 {
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.legal p,
.legal ul {
  margin-bottom: 1rem;
  color: var(--text);
}

.legal ul {
  padding-left: 1.5rem;
}

.legal li {
  margin-bottom: 0.5rem;
}

/* Footer */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-light);
  font-size: 0.875rem;
}

.footer-copy {
  color: var(--text-light);
  font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .header-inner {
    flex-direction: column;
    gap: 1rem;
  }

  .nav {
    gap: 1rem;
  }
}