/* 知识库系统 - 基础样式 */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: #f7f8fa;
    color: #1f2329;
    line-height: 1.6;
}
a { color: #1e6fff; text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: #f0f1f3; padding: 2px 6px; border-radius: 3px; font-size: 0.9em; }
pre { background: #1e1e1e; color: #d4d4d4; padding: 16px; border-radius: 6px; overflow-x: auto; }
pre code { background: transparent; color: inherit; padding: 0; }

.nav {
    background: #1e6fff;
    color: #fff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
}
.logo { color: #fff; font-weight: 600; font-size: 18px; }
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { color: rgba(255,255,255,0.9); }
.nav-links a:hover { color: #fff; text-decoration: none; }
.nav-links .user { color: rgba(255,255,255,0.7); font-size: 14px; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 24px;
}
h1 { font-size: 28px; margin-bottom: 8px; }
h2 { font-size: 22px; margin: 32px 0 16px; }
h3 { font-size: 18px; margin: 24px 0 12px; }
.lead { color: #646a73; margin-bottom: 32px; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin: 24px 0;
}
.stat-card {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    text-align: center;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.stat-num { font-size: 36px; font-weight: 600; color: #1e6fff; }
.stat-label { color: #646a73; margin-top: 4px; }

.btn {
    display: inline-block;
    padding: 8px 16px;
    background: #fff;
    border: 1px solid #dcdfe6;
    border-radius: 4px;
    color: #1f2329;
    cursor: pointer;
    font-size: 14px;
}
.btn:hover { background: #f7f8fa; text-decoration: none; }
.btn-primary { background: #1e6fff; color: #fff; border-color: #1e6fff; }
.btn-primary:hover { background: #1a5cd8; color: #fff; }

.data-table {
    width: 100%;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
    border-collapse: collapse;
}
.data-table th, .data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #f0f1f3;
}
.data-table th { background: #f7f8fa; font-weight: 500; color: #4e5969; font-size: 14px; }
.data-table tr:last-child td { border-bottom: none; }

.quick-actions {
    display: flex;
    gap: 12px;
    margin: 24px 0;
    flex-wrap: wrap;
}

.api-info {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    margin-top: 32px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}

input[type=text], input[type=password], input[type=email], textarea, select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #dcdfe6;
    border-radius: 4px;
    font-size: 14px;
    font-family: inherit;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: #1e6fff; }
label { display: block; margin: 12px 0 4px; font-size: 14px; color: #4e5969; }
.form-group { margin-bottom: 16px; }

/* Flash messages */
.flash { padding: 10px 16px; border-radius: 4px; margin: 12px 24px; }
.flash-info    { background: #e6f7ff; color: #0050b3; border: 1px solid #91d5ff; }
.flash-success { background: #f6ffed; color: #389e0d; border: 1px solid #b7eb8f; }
.flash-error   { background: #fff1f0; color: #cf1322; border: 1px solid #ffa39e; }

/* Auth layout */
.auth-body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e6fff 0%, #6f42c1 100%);
}
.auth-card {
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    width: 360px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}
.auth-title { text-align: center; margin-bottom: 24px; font-size: 22px; color: #1f2329; }

/* Admin layout */
.admin-body { background: #f0f2f5; }
.admin-shell { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.admin-side { background: #001529; color: #fff; padding: 16px 0; }
.admin-logo { padding: 16px 24px; font-size: 16px; font-weight: 600; border-bottom: 1px solid rgba(255,255,255,0.1); }
.admin-side nav { display: flex; flex-direction: column; }
.admin-side nav a {
    color: rgba(255,255,255,0.7);
    padding: 10px 24px;
    font-size: 14px;
    border-left: 3px solid transparent;
}
.admin-side nav a:hover { background: rgba(255,255,255,0.05); color: #fff; text-decoration: none; }
.admin-main { padding: 24px 32px; overflow-x: auto; }
.page-title { margin-bottom: 16px; }

.page-title { font-size: 24px; }

/* responsive */
@media (max-width: 768px) {
    .admin-shell { grid-template-columns: 1fr; }
    .admin-side { display: none; }
    .nav-links { gap: 12px; font-size: 13px; }
}