/* 登入頁面共用樣式 */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    background-image: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.main-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    width: 100%;
    transform: scale(1.1);
}

.login-container {
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,0.15);
    padding: 3rem;
    width: 100%;
    max-width: 450px;
    margin: 2rem auto;
}

.login-header {
    margin-bottom: 3rem;
    text-align: center;
}

.btn-login {
    background-color: #4e73df;
    border-color: #4e73df;
    font-weight: 500;
    padding: 0.75rem;
}

.btn-login:hover {
    background-color: #2e59d9;
    border-color: #2653d4;
}

.form-icon {
    color: #6c757d;
}

.input-group-text {
    background-color: #f8f9fa;
}

.mb-4 {
    margin-bottom: 2rem !important;
}