.login-body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.form-container {
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    margin-top: 40px;
}

.login-logo {
    width: 200px;
    height: auto;
    margin-bottom: 20px;
}

.login-logo-link {
    text-decoration: none;
    display: block;
    text-align: center;
    margin-bottom: 30px;
}

h2 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
}

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

label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-size: 0.9em;
}

.optional {
    font-size: 0.8em;
    color: #666;
    margin-left: 5px;
    font-weight: normal;
}

input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1em;
    transition: border-color 0.3s ease;
}

input:focus {
    outline: none;
    border-color: #3498db;
}

.checkbox-group {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
    cursor: pointer;
}

.checkbox-label span {
    color: #666;
    font-size: 0.9em;
}

.submit-btn {
    width: 100%;
    padding: 12px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.3s ease;
}

.submit-btn:hover {
    background: #2980b9;
}

.form-footer {
    margin-top: 20px;
    text-align: center;
    color: #666;
}

.form-footer a {
    color: #3498db;
    text-decoration: none;
    margin-left: 5px;
}

.form-footer a:hover {
    text-decoration: underline;
}

/* Toast 消息样式 */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 24px;
    background: white;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

.toast.success {
    border-left: 4px solid #2ecc71;
}

.toast.error {
    border-left: 4px solid #e74c3c;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 语言选择器样式 */
.language-selector {
    position: relative;
}

.lang-btn {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #ddd;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: #333;
}

.lang-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-top: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.lang-menu.show {
    display: block;
}

.lang-option {
    padding: 8px 16px;
    cursor: pointer;
    white-space: nowrap;
}

.lang-option:hover {
    background-color: #f8f9fa;
}

@media (max-width: 480px) {
    .form-container {
        padding: 20px;
    }
    
    .logo {
        font-size: 1.8em;
    }
    
    input {
        font-size: 16px;  /* 防止iOS缩放 */
    }
}