/* 粉笔先生 — Global Styles */

:root {
    --primary-color: #5FB878;
    --primary-hover: #4CAF50;
    --bg-color: #F2F2F2;
    --text-color: #333;
    --text-muted: #999;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
}

/* Header */
.header {
    background-color: #393D49;
}

.header .layui-nav {
    background: none;
}

/* Main content */
.main-content {
    min-height: calc(100vh - 120px);
    padding: 20px 0;
}

/* Footer */
.footer {
    text-align: center;
    padding: 20px 0;
    background-color: #fff;
    border-top: 1px solid #eee;
}

.footer p {
    color: var(--text-muted);
    margin: 0;
}

/* Cards */
.layui-card {
    border-radius: 4px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.layui-card-header {
    font-size: 16px;
    font-weight: 600;
}

.layui-card-header .layui-icon {
    margin-right: 8px;
    font-size: 18px;
}

/* Page title */
.page-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

/* Utility */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }

/* Language switch */
.lang-switch {
    cursor: pointer;
}