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

/* 根元素样式 */
:root {
    --primary-color: #4A6CF7;
    --primary-hover: #3A56D4;
    --secondary-color: #6C757D;
    --success-color: #28A745;
    --danger-color: #DC3545;
    --warning-color: #FFC107;
    --light-color: #F8F9FA;
    --dark-color: #343A40;
    --gray-100: #F8F9FA;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-400: #CED4DA;
    --gray-500: #ADB5BD;
    --gray-600: #6C757D;
    --gray-700: #495057;
    --gray-800: #343A40;
    --gray-900: #212529;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --border-radius: 2px;
    --transition: all 0.3s ease;
}

/* 字体和基础样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
        'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
        sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-image: url('【哲风壁纸】卧室台灯-城市夜景.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

/* 登录容器 */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    width: 100%;
    perspective: 1000px;
}

/* 登录卡片容器 - 用于居中显示登录卡片 */
.login-wrapper {
    width: 100%;
    max-width: 260px;
}

/* 登录卡片 - 毛玻璃效果 */
.login-card {
    background: rgba(240, 240, 240, 0.1); /* 降低亮度和透明度 */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 0px; /* 取消圆角 */
    box-shadow: var(--shadow-lg);
    padding: 14px;
    width: 100%;
    transform-style: preserve-3d;
    transition: transform 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-card:hover {
    transform: translateY(-5px);
}

/* 登录头部 */
.login-header {
    text-align: center;
    margin-bottom: 12px;
}

.login-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 2px;
}

.login-subtitle {
    font-size: 0.75rem;
    color: var(--gray-600);
}

/* 表单样式 */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group {
    margin-bottom: 10px;
}

.form-label {
    display: block;
    font-weight: 500;
    color: var(--gray-800);
    margin-bottom: 6px;
    font-size: 0.9rem;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 15px;
    color: var(--gray-600);
    font-size: 16px;
}

/* 输入框 - 毛玻璃效果 */
.form-input {
    width: 100%;
    padding: 6px 8px;
    border: 2px solid rgba(240, 240, 240, 0.2);
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    transition: var(--transition);
    background: rgba(240, 240, 240, 0.15); /* 降低亮度和透明度 */
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    color: var(--gray-200); /* 更改文本颜色为浅灰色 */
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.2);
    background: rgba(240, 240, 240, 0.25); /* 降低亮度和透明度 */
}

.form-input::placeholder {
    color: var(--gray-600); /* 更改占位符颜色为深色 */
}

/* 密码切换按钮 */
.toggle-password {
    position: absolute;
    right: 15px;
    background: none;
    border: none;
    color: var(--gray-800);
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
}

.toggle-password:hover {
    color: var(--dark-color);
}

/* 表单选项 */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox {
    width: 14px;
    height: 14px;
    cursor: pointer;
    accent-color: #333333;
    background: rgba(200, 200, 200, 0.3);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(200, 200, 200, 0.5);
}

.remember-me label {
    color: var(--dark-color);
    font-size: 0.75rem;
    cursor: pointer;
}

.forgot-password {
    color: var(--dark-color);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition);
}

.forgot-password:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* 登录按钮 - 毛玻璃效果 */
.login-button {
    width: 100%;
    padding: 8px;
    background: rgba(240, 240, 240, 0.1); /* 降低亮度和透明度 */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--dark-color); /* 更改文本颜色为深灰色 */
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.login-button:hover {
    background: rgba(240, 240, 240, 0.2); /* 降低亮度和透明度 */
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(74, 108, 247, 0.3);
    border-color: rgba(255, 255, 255, 0.4);
}

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

.login-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.login-button:hover::before {
    width: 300px;
    height: 300px;
}

/* 分隔线 */
.divider {
    display: flex;
    align-items: center;
    margin: 25px 0;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background-color: var(--gray-300);
}

.divider span {
    padding: 0 15px;
    color: var(--gray-500);
    font-size: 0.9rem;
}

/* 社交登录按钮 */
.social-login {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.social-button {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius);
    background-color: white;
    color: var(--gray-700);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.social-button:hover {
    border-color: var(--dark-color);
    background-color: var(--gray-50);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.social-button.google:hover {
    border-color: #DB4437;
    color: #DB4437;
}

.social-button.wechat:hover {
    border-color: #07C160;
    color: #07C160;
}

/* 隐藏的提交按钮 - 毛玻璃效果 */
input[type="submit"] {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--dark-color);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius);
}

/* 注册链接 */
.register-link {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
}

.register-link p {
    color: var(--gray-800);
}

.register-link a {
    color: #333333;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.register-link a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 576px) {
    body {
        padding: 15px;
    }
    
    .login-card {
        padding: 30px 25px;
    }
    
    .login-title {
        font-size: 1.75rem;
    }
    
    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .social-login {
        gap: 10px;
    }
}

@media (max-width: 400px) {
    .login-card {
        padding: 25px 20px;
    }
    
    .login-title {
        font-size: 1.5rem;
    }
    
    .form-input {
        padding: 10px 12px 10px 40px;
    }
    
    .login-button {
        padding: 12px;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-card {
    animation: fadeIn 0.5s ease-out;
}

.form-group {
    animation: fadeIn 0.5s ease-out;
}

.form-group:nth-child(1) {
    animation-delay: 0.1s;
}

.form-group:nth-child(2) {
    animation-delay: 0.2s;
}

.form-options {
    animation: fadeIn 0.5s ease-out;
    animation-delay: 0.3s;
}

.login-button {
    animation: fadeIn 0.5s ease-out;
    animation-delay: 0.4s;
}

.divider {
    animation: fadeIn 0.5s ease-out;
    animation-delay: 0.5s;
}

.social-login {
    animation: fadeIn 0.5s ease-out;
    animation-delay: 0.6s;
}

.register-link {
    animation: fadeIn 0.5s ease-out;
    animation-delay: 0.7s;
}

/* 禁用的动画，用于性能优化 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}