:root {
    --primary-color: #2c3e50;
    --secondary-color: #e74c3c;
    --accent-color: #3498db;
    --light-gray: #f8f9fa;
    --dark-gray: #343a40;
}

body {
    background-color: var(--light-gray);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
}

.login-container {
    max-width: 400px;
    width: 100%;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    align-items: center;
    min-height: 100vh;
}

.login-card {
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    border: none;
    overflow: hidden;
    width: 100%;
}

.login-header {
    background-color: var(--primary-color);
    color: white;
    padding: 25px 20px;
    text-align: center;
}

.logo {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.logo-icon {
    color: var(--secondary-color);
}

.login-body {
    padding: 30px;
    background-color: white;
}

.form-control:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.25);
}

.btn-login {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: white;
    font-weight: 600;
    padding: 10px;
    transition: all 0.3s;
}

.btn-login:hover {
    background-color: #c0392b;
    border-color: #c0392b;
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .login-container {
        padding: 15px;
    }

    .login-body {
        padding: 20px;
    }
}