body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(120deg, #2980b9, #8e44ad);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-title {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 30px;
}

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

.btn-login {
    background: linear-gradient(120deg, #2980b9, #8e44ad);
    border: none;
    color: white;
    padding: 12px;
    border-radius: 8px;
    width: 100%;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.input-group-text {
    background: transparent;
    border-right: none;
}

.form-control {
    border-left: none;
}

.error-message {
    color: #dc3545;
    font-size: 14px;
    margin-top: 5px;
    display: none;
}