/* 登录页面样式 */
* {
    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, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

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

.login-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 12px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    padding: 40px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.login-header h1 {
    color: #333;
    font-size: 24px;
    margin-bottom: 8px;
    font-weight: 600;
}

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

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

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

.form-group label {
    color: #333;
    font-size: 14px;
    font-weight: 500;
}

.form-group input {
    padding: 12px 16px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.login-btn {
    padding: 12px 24px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

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

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

.error-message {
    background: #fee;
    color: #c33;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #fcc;
    font-size: 14px;
    text-align: center;
}

.success-message {
    background: #efe;
    color: #393;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #cfc;
    font-size: 14px;
    text-align: center;
}

/* 锁定消息样式 */
.lock-message {
    background: #fff3cd;
    color: #856404;
    padding: 16px;
    border-radius: 8px;
    border: 1px solid #ffeaa7;
    margin-top: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.lock-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.lock-text {
    line-height: 1.4;
}

.lock-text strong {
    color: #6c4400;
    font-weight: 600;
}

/* 记住密码样式 - 现代化设计 */
.remember-section {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    margin: 4px 0;
    gap: 15px;
    flex-wrap: nowrap; /* 防止换行 */
}

.remember-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 14px;
    color: #555;
    user-select: none;
    position: relative;
    transition: all 0.2s ease;
    flex-shrink: 0; /* 防止收缩 */
    min-width: 0; /* 允许文本收缩 */
}

.remember-label:hover {
    color: #667eea;
}

.remember-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    background: #fff;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    margin-right: 10px;
    position: relative;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.remember-label input[type="checkbox"]:checked + .checkmark {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-color: #667eea;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.remember-label input[type="checkbox"]:checked + .checkmark::after {
    content: "✓";
    color: white;
    font-size: 14px;
    font-weight: bold;
    animation: checkmarkPop 0.3s ease;
}

@keyframes checkmarkPop {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.remember-label:hover .checkmark {
    border-color: #667eea;
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.15);
}

/* 增强动画效果 */
.remember-label {
    position: relative;
    overflow: hidden;
}

.remember-label::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.3s ease;
    z-index: 0;
}

.remember-label:hover::before {
    width: 100%;
    height: 100%;
    border-radius: 8px;
}

.remember-label span,
.checkmark {
    position: relative;
    z-index: 1;
}

/* 焦点可访问性增强 */
.remember-label:focus-within .checkmark {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

/* 点击反馈效果 */
.remember-label:active .checkmark {
    transform: scale(0.95);
}

.remember-label input[type="checkbox"]:checked + .checkmark:active {
    transform: scale(1);
}

/* 渐入动画 */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.remember-section {
    animation: slideInUp 0.5s ease 0.3s both;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .remember-section {
        justify-content: space-around;
        gap: 10px;
    }
    
    .remember-label {
        font-size: 13px;
    }
}

/* 响应式设计 */
@media (max-width: 480px) {
    .login-card {
        padding: 30px 20px;
    }
    
    .login-header h1 {
        font-size: 22px;
    }
}

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

.login-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid #ffffff;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}