:root {
  --blue: #2563eb;
  --blue-light: #3b82f6;
  --text: #0f172a;
  --muted: #475569;
  --bg: #ffffff;
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  --radius: 8px;
  font-family: "Inter", sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* --- Navbar --- */
.navbar {
  background: white;
  border-bottom: 1px solid #e2e8f0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  max-width: 1100px;
  margin: auto;
}

.logo {
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--blue);
}
.logo span {
  color: var(--blue-light);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}
.nav-links a:hover {
  color: var(--blue);
}
.nav-links a.active {
  color: var(--blue);
}

/* --- Buttons --- */
.btn-primary {
  background: var(--blue);
  color: white !important;
  padding: 8px 14px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: 0.3s;
}
.btn-primary:hover {
  background: var(--blue-light);
}
.btn-outline {
  border: 1px solid var(--blue);
  color: var(--blue);
  padding: 8px 14px;
  border-radius: var(--radius);
  background: white;
  text-decoration: none;
  transition: 0.3s;
}
.btn-outline:hover {
  background: var(--blue-light);
  color: #fff;
}

/* --- Mobile Menu --- */
.menu-toggle {
  display: none;
  font-size: 24px;
  cursor: pointer;
}

/* --- Hero --- */
.hero {
  text-align: center;
  padding: 80px 20px;
  background: #f8fafc;
}
.hero h1 {
  font-size: 2.5rem;
  color: var(--blue);
}
.hero p {
  color: var(--muted);
  margin-bottom: 20px;
}
.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
}

/* --- Footer --- */
footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--blue);
  color: #fff;
  text-align: center;
  padding: 14px;
  font-size: 1rem;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    background: #fff;
    position: absolute;
    top: 60px;
    right: 20px;
    width: 180px;
    box-shadow: var(--shadow);
    padding: 10px;
    border-radius: var(--radius);
  }
  .nav-links.open {
    display: flex;
  }
  .menu-toggle {
    display: block;
  }
}