/* ===== 登录页面 ===== */
body.login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 0;
}
.login-container {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 400px;
}
.login-header {
    text-align: center;
    margin-bottom: 30px;
}
.login-header h1 {
    color: #333;
    font-size: 24px;
    margin-bottom: 10px;
}
.login-header p {
    color: #666;
    font-size: 14px;
}
.login-container .form-group { margin-bottom: 20px; }
.login-container .form-group label {
    margin-bottom: 8px;
    font-weight: bold;
    font-size: 14px;
}
.login-container .form-group input {
    padding: 12px;
    border-radius: 5px;
    transition: border-color 0.3s;
}
.login-container .form-group input:focus {
    border-color: #667eea;
    box-shadow: none;
}
.login-container .form-group .error {
    color: #dc3545;
    font-size: 12px;
    margin-top: 5px;
}
.login-container .btn {
    width: 100%;
    padding: 12px;
    border-radius: 5px;
    font-size: 16px;
    font-weight: bold;
    transition: opacity 0.3s;
}
.login-container .btn:hover:not(:disabled) { opacity: 0.9; }
.login-container .btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}
.login-loading {
    text-align: center;
    padding: 20px;
    color: #667eea;
    font-size: 14px;
}
.login-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 12px;
    color: #999;
}