body {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #7fadda 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.login-container {
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    padding: 3rem 2.5rem;
    min-width: 380px;
    max-width: 420px;
}

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

.login-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    box-shadow: 0 4px 15px rgba(30, 60, 114, 0.3);
}

.login-icon i {
    font-size: 2rem;
    color: white;
}

.login-title {
    color: #1e3c72;
    font-weight: 600;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.login-subtitle {
    color: #6c757d;
    font-size: 0.9rem;
}

.form-label {
    color: #495057;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-control {
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 0.65rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: #2a5298;
    box-shadow: 0 0 0 0.2rem rgba(42, 82, 152, 0.15);
}

.btn-login {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    border: none;
    border-radius: 8px;
    padding: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(30, 60, 114, 0.3);
}

.btn-login:hover {
    background: linear-gradient(135deg, #2a5298, #1e3c72);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 60, 114, 0.4);
}

.alert {
    border-radius: 8px;
    border: none;
    font-size: 0.9rem;
}

.login-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: #6c757d;
    font-size: 0.85rem;
}