* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #fce4ec 0%, #f3e5f5 50%, #e8eaf6 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 400px;
}

.login-card {
    background: white;
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header .avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff9a9e 0%, #fad0c4 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 32px;
    color: white;
    font-weight: bold;
}

.login-header h1 {
    font-size: 28px;
    color: #333;
    margin-bottom: 5px;
}

.login-header .subtitle {
    color: #888;
    font-size: 14px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    color: #555;
    font-weight: 500;
}

.form-group input {
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    outline: none;
}

.form-group input:focus {
    border-color: #ff9a9e;
}

.form-group input::placeholder {
    color: #bbb;
}

.btn-primary {
    padding: 14px;
    background: linear-gradient(135deg, #ff9a9e 0%, #fad0c4 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    margin-top: 10px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 154, 158, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.switch-text {
    text-align: center;
    font-size: 14px;
    color: #888;
}

.switch-text a {
    color: #ff9a9e;
    text-decoration: none;
    font-weight: 500;
}

.switch-text a:hover {
    text-decoration: underline;
}

.error-message {
    display: none;
    padding: 12px;
    background: #fff3f3;
    border: 1px solid #ffcdd2;
    border-radius: 8px;
    color: #d32f2f;
    font-size: 14px;
    text-align: center;
    margin-top: 10px;
}

.error-message.show {
    display: block;
}

/* 加载动画 */
.btn-primary.loading {
    position: relative;
    color: transparent;
}

.btn-primary.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin: -10px 0 0 -10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 响应式 */
@media (max-width: 480px) {
    .login-card {
        padding: 30px 20px;
    }

    .login-header .avatar {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }

    .login-header h1 {
        font-size: 24px;
    }
}

/* 底部备案信息 */
.login-footer {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid #eee;
    text-align: center;
    font-size: 12px;
    color: #999;
}

.login-footer a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s;
}

.login-footer a:hover {
    color: #9b59b6;
}

.login-footer .footer-divider {
    margin: 0 8px;
    color: #ddd;
}