/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #91a3f6 0%, #e4c8ff 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* 认证容器 */
.auth-container {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
    padding: 40px;
}

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

.auth-header h1 {
    color: #333;
    margin-bottom: 10px;
    font-size: 24px;
}

.auth-header p {
    color: #666;
    font-size: 14px;
}

/* 表单样式 */
.auth-form .form-group {
    margin-bottom: 20px;
}

.auth-form label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-weight: 500;
}

.auth-form input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.auth-form input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.1);
}

.auth-form input.error {
    border-color: #e74c3c;
}

/* 按钮样式 */
.btn {
    display: block;
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #c597f8 100%);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.3);
}

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

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* 链接和额外选项 */
.auth-links {
    text-align: center;
    margin-top: 20px;
}

.auth-links a {
    color: #667eea;
    text-decoration: none;
    font-size: 14px;
}

.auth-links a:hover {
    text-decoration: underline;
}

.auth-separator {
    display: flex;
    align-items: center;
    margin: 20px 0;
    color: #999;
}

.auth-separator::before,
.auth-separator::after {
    content: '';
    flex: 1;
    height: 1px;
    background: #eee;
}

.auth-separator span {
    padding: 0 10px;
}

/* 错误和成功消息 */
.message {
    padding: 10px 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 14px;
}

.message.error {
    background-color: #fee;
    color: #e74c3c;
    border: 1px solid #fadbd8;
}

.message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* 响应式调整 */
@media (max-width: 480px) {
    .auth-container {
        padding: 30px 20px;
    }

    body {
        padding: 10px;
    }
}

/* 隐藏元素 */
.hidden {
    display: none !important;
}
/* 页面加载器 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.loader-content {
    text-align: center;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--primary-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* 表单错误样式 */
.error-message {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

input.error {
    border-color: var(--danger-color) !important;
}

input.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1) !important;
}