:root {
  --primary-blue: #5dade2;
  --secondary-blue: #1470b7;
  --accent-red: #d90429;
  --light-bg: #f2f6ff;
  --white: #ffffff;
  --text-dark: #333333;
  --text-light: #666666;
  --transition: all 0.3s ease;
  --shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Open Sans", sans-serif;
}

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

a {
  text-decoration: none;
  color: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ===== HEADER ===== */
header {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
  padding: 15px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  color: var(--white);
  text-decoration: none;
}

.logo img {
  height: 50px;
  margin-right: 10px;
}

.nav-links {
  display: flex;
  list-style: none;
}

.nav-links li {
  margin-left: 25px;
}

.nav-links a {
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  transition: var(--transition);
  padding: 8px 5px;
  position: relative;
}

.nav-links a:after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--white);
  transition: var(--transition);
}

.nav-links a:hover:after,
.nav-links a.active-link:after {
  width: 100%;
}

.nav-links a.active-link {
  font-weight: 600;
}

.menu-icon {
  display: none;
  font-size: 26px;
  cursor: pointer;
  color: var(--white);
}

@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--primary-blue);
    flex-direction: column;
    display: none;
    text-align: center;
    padding: 15px 0;
  }

  .nav-links.show {
    display: flex;
  }

  .menu-icon {
    display: block;
  }
}