:root {
  --bg-color: #0F172A;
  --surface-color: #1E293B;
  --primary-color: #38BDF8;
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --accent-glow: rgba(56, 189, 248, 0.2);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  background-color: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-color);
  text-decoration: none;
  letter-spacing: -0.5px;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  margin-left: 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

main {
  flex: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 4rem 5%;
  width: 100%;
}

h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(to right, #F8FAFC, #38BDF8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

h2 {
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.hero {
  text-align: center;
  padding: 4rem 0;
}

.hero p {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto 2.5rem auto;
}

.btn {
  display: inline-block;
  background-color: var(--primary-color);
  color: var(--bg-color);
  padding: 0.8rem 2rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px var(--accent-glow);
}

.content-box {
  background-color: var(--surface-color);
  padding: 3rem;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.content-box ul {
  margin-left: 2rem;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.content-box li {
  margin-bottom: 0.5rem;
}

footer {
  text-align: center;
  padding: 3rem 5%;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  background-color: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: inherit;
  transition: border-color 0.3s ease;
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.submit-btn {
  background-color: var(--primary-color);
  color: var(--bg-color);
  border: none;
  padding: 0.8rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.submit-btn:hover {
  background-color: #7DD3FC;
}

@media (max-width: 768px) {
  header {
    flex-direction: column;
    gap: 1rem;
  }
  nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }
  nav a {
    margin: 0;
  }
  h1 {
    font-size: 2.5rem;
  }
}