/* Global Styles */
:root {
  --primary-color: #3498db;
  --secondary-color: #2ecc71;
  --accent-color: #e74c3c;
  --text-color: #333;
  --light-gray: #f5f5f5;
  --gray: #ddd;
  --dark-gray: #555;
  --success: #27ae60;
  --warning: #f39c12;
  --error: #c0392b;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: #f9f9f9;
  margin: 0;
  padding: 0;
}

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

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

/* Header Styles */
header {
  background-color: white;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  padding: 1rem 0;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
}

.nav-links {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links li {
  margin-left: 1.5rem;
}

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

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

input, select, textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--gray);
  border-radius: 4px;
  font-size: 1rem;
}

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

/* Button Styles */
.btn {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  background-color: var(--secondary-color);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  transition: background-color 0.3s;
}

.btn:hover {
  background-color: #26a65b;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: #2980b9;
}

/* Authentication Forms */
.auth-container {
  max-width: 500px;
  margin: 2rem auto;
  padding: 2rem;
  background-color: white;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.auth-tabs {
  display: flex;
  margin-bottom: 2rem;
}

.auth-tab {
  flex: 1;
  padding: 1rem;
  text-align: center;
  background-color: var(--light-gray);
  cursor: pointer;
}

.auth-tab.active {
  background-color: white;
  border-bottom: 3px solid var(--primary-color);
}

/* Responsive Styles */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
  }
  
  .nav-links {
    margin-top: 1rem;
  }
  
  .nav-links li {
    margin-left: 1rem;
    margin-right: 1rem;
  }
}