/* 通用样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #c41230;
    --secondary-color: #8a1022;
    --accent-color: #f8c630;
    --text-color: #333;
    --light-text: #666;
    --lighter-text: #999;
    --border-color: #e0e0e0;
    --bg-color: #f5f5f5;
    --card-bg: #fff;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    background-image: url('https://images.unsplash.com/photo-1578301978693-85fa9c0320b9?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    position: relative;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    z-index: -1;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 15px;
}

/* 头部样式 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
    position: relative;
}

.header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.user-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn {
    padding: 8px 16px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--secondary-color);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 卡片样式 */
.card {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
    position: relative;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.card-header {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    background-color: #f8f8f8;
    position: relative;
}

.card-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--primary-color);
}

.card-body {
    padding: 15px;
}

.card-footer {
    padding: 15px;
    border-top: 1px solid var(--border-color);
    background-color: #f8f8f8;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(196, 18, 48, 0.1);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M6 8.825L1.175 4 2.05 3.125 6 7.075 9.95 3.125 10.825 4z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 30px;
}

/* 中式风格元素 */
.chinese-decoration {
    position: absolute;
    width: 100px;
    height: 100px;
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0.1;
    z-index: -1;
}

.chinese-decoration.top-right {
    top: 20px;
    right: 20px;
    background-image: url('https://images.unsplash.com/photo-1578301978693-85fa9c0320b9?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    transform: rotate(45deg);
}

.chinese-decoration.bottom-left {
    bottom: 20px;
    left: 20px;
    background-image: url('https://images.unsplash.com/photo-1578301978693-85fa9c0320b9?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    transform: rotate(-45deg);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-links {
        width: 100%;
        justify-content: space-between;
    }
    
    .user-actions {
        width: 100%;
        justify-content: space-between;
    }
}