/* 全局基础样式 */
body {
    font-family: Arial, sans-serif;
    background: #F5F5F5;
    color: #2E2E2E;
    margin: 0;
}

a {
    color: #2196F3;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #1565C0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

button {
    background: linear-gradient(135deg, #64B5F6, #2979FF);
    border: none;
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.2s;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

/* 输入组件 */
input, textarea, select {
    background: white;
    border: 1px solid #E0E0E0;
    border-radius: 4px;
    padding: 12px;
    margin: 5px 0;
    transition: border-color 0.3s;
}

input:focus, textarea:focus {
    border-color: #2196F3;
    outline: none;
}

/* form {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    margin: 20px 0;
} */

/* 卡片样式 */
.card {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin: 15px 0;
}

.project-card {
    background: #FFFFFF;
    padding: 15px;
    margin: 10px 0;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    transition: transform 0.2s;
}

.project-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

/* 登录页特殊样式 */
.login-box {
    background: white;
    max-width: 450px;
    margin: 80px auto;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

/* 导航链接特效 */
nav a {
    position: relative;
    padding-bottom: 3px;
    display: inline-block;
    margin: 0 15px;
}

nav a:hover::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background: #2196F3;
    border-radius: 2px;
}

/* 表单特殊样式 */
.upload-form {
    background: #F8FBFD;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

/* 按钮组 */
.btn-group {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

/* 高亮提示 */
.highlight {
    background: #E8F5E9;
    padding: 10px;
    border-radius: 6px;
    margin: 15px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
}