.login-container {
    width: 100%;
    max-width: 400px;
    background: var(--mdui-color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--mdui-elevation-level3);
    overflow: hidden;
    animation: slideUp var(--anim-duration) ease-out;
    margin: 20px;
}

.login-header {
    background: linear-gradient(135deg, var(--primary-color), #5e43a3);
    color: white;
    padding: 32px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.login-header::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}
.login-header::after {
    content: '';
    position: absolute;
    bottom: -30px;
    left: -30px;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}
.login-header h1 {
    font-size: 28px;
    margin-bottom: 8px;
    font-weight: 700;
    position: relative;
    z-index: 1;
}
.login-header p {
    opacity: 0.9;
    font-size: 14px;
    position: relative;
    z-index: 1;
}

.login-content {
    padding: var(--spacing-base);
}
.form-group {
    margin-bottom: 28px;
    position: relative;
}
.code-group {
    display: flex;
    gap: 8px;
    align-items: center;
}
.code-group mdui-text-field {
    flex: 1;
    --mdui-component-height: 48px;
}
.code-group mdui-button {
    --mdui-component-height: 48px;
    white-space: nowrap;
}

.action-links {
    display: flex;
    justify-content: space-between;
    margin-top: 28px;
    padding: 0 4px;
}
.footer-note {
    text-align: center;
    padding: 12px;
    color: var(--mdui-color-on-surface-variant);
    font-size: 14px;
    border-top: 1px solid var(--mdui-color-outline-variant);
    margin-top: 8px;
}

/* 表单显隐 */
#registerForm, #forgetForm {
    display: none;
}
#loginForm, #registerForm, #forgetForm {
    transition: opacity 0.3s ease;
}

/* 移动端适配 */
@media (max-width: 480px) {
    .login-container {
        border-radius: var(--radius-md);
        margin: 16px;
    }
    .login-header {
        padding: 24px 20px;
    }
    .login-content {
        padding: var(--spacing-base);
    }
}