/* style.css */
*, body {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navigation-header {
    background-color: #2c3e50;
    padding: 0 15px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    width: 100%;
    max-width: 1200px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container a {
    color: white;
    text-decoration: none;
    font-weight: 700;
    font-size: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-container img {
    height: 40px;
}

.navigation-items {
    display: flex;
    gap: 30px;
    align-items: center;
}

.navigation-items a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    transition: color 0.3s ease;
}

.navigation-items a:hover {
    color: #3498db;
}

.btn-login, .btn-logout {
    background-color: #3498db;
    padding: 8px 16px;
    border-radius: 4px;
    color: white !important;
}

.btn-login:hover, .btn-logout:hover {
    background-color: #2980b9;
}

.hamburger {
    display: none;
    font-size: 24px;
    color: white;
    cursor: pointer;
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 100px 50px 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    min-height: 80vh;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn-primary {
    background-color: #e74c3c;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-primary:hover {
    background-color: #c0392b;
}

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
}

/* Features Section */
.features {
    padding: 80px 50px;
    background-color: #f8f9fa;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #2c3e50;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card i {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #2c3e50;
}

/* Login Styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

.login-form {
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
}

.login-form .logo {
    text-align: center;
    margin-bottom: 30px;
}

.login-form .logo img {
    height: 60px;
    margin-bottom: 15px;
}

.login-form .logo h2 {
    color: #2c3e50;
    font-size: 1.8rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.alert {
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

/* Responsive Design */
@media screen and (max-width: 768px) {
    .hamburger {
        display: block;
    }
    
    .navigation-items {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: #2c3e50;
        padding: 20px;
        gap: 20px;
    }
    
    .navigation-items.responsive {
        display: flex;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 120px 20px 50px;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
    }
}