body {
    background: linear-gradient(135deg, #1e1e2e 0%, #2d2d44 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.login-card {
    background: #2d2d44;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    border: 1px solid #3d3d5c;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h2 {
    color: #fff;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: #adb5bd;
    font-size: 0.9rem;
}

.form-label {
    color: #e9ecef;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-control {
    background-color: #1e1e2e;
    border: 1px solid #3d3d5c;
    color: #fff;
    padding: 0.75rem;
}

.form-control:focus {
    background-color: #1e1e2e;
    border-color: #0d6efd;
    color: #fff;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.btn-primary {
    background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
    border: none;
    padding: 0.75rem;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(13, 110, 253, 0.4);
}

.alert {
    border-radius: 10px;
    border: none;
}

.alert-danger {
    background-color: #842029;
    color: #f8d7da;
}