:root {
    --primary: #1677ff;
    --primary-dark: #0958d9;
    --bg: #f0f2f5;
    --card-bg: #ffffff;
    --text: #1d2129;
    --text-light: #4e5969;
    --text-muted: #86909c;
    --border: #e5e6eb;
    --salary: #e74c3c;
    --tag-bg: #f2f3f5;
    --tag-text: #4e5969;

    /* 平台色 */
    --color-51job: #1677ff;
    --color-zhilian: #f5222d;
    --color-boss: #00b38a;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
                 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

/* ─── Header ─────────────────────────── */
.header {
    background: linear-gradient(135deg, var(--color-51job) 0%, #4096ff 100%);
    color: white; padding: 24px 20px; text-align: center;
}
.header h1 { font-size: 22px; font-weight: 600; margin-bottom: 4px; }
.header .subtitle { font-size: 13px; opacity: 0.85; margin-bottom: 12px; }
.stats-row {
    display: flex; justify-content: center; gap: 16px; flex-wrap: wrap;
}
.stat-card {
    background: rgba(255,255,255,0.18); padding: 6px 16px;
    border-radius: 8px; font-size: 13px;
}
.stat-card .num { font-weight: 600; }
.last-update { font-size: 12px; opacity: 0.7; margin-top: 10px; }

/* ─── Tabs ──────────────────────────── */
.tabs {
    display: flex; background: white; padding: 0 12px;
    border-bottom: 1px solid var(--border); gap: 0;
}
.tab-btn {
    padding: 10px 20px; border: none; background: none;
    cursor: pointer; font-size: 14px; font-weight: 500;
    color: var(--text-muted); position: relative;
    transition: color 0.2s;
}
.tab-btn:hover { color: var(--text-light); }
.tab-btn.active { color: var(--primary); }
.tab-btn.active::after {
    content: ''; position: absolute; bottom: 0; left: 12px; right: 12px;
    height: 2px; background: var(--primary); border-radius: 1px;
}
.tab-btn.disabled {
    color: var(--text-muted); cursor: default; opacity: 0.5;
}
.tab-btn.disabled::after { display: none; }
.tab-badge {
    font-size: 11px; background: var(--tag-bg); color: var(--text-muted);
    padding: 1px 6px; border-radius: 4px; margin-left: 4px;
}

/* ─── Controls ──────────────────────── */
.controls {
    padding: 12px 16px; background: white; margin: 10px;
    border-radius: 10px; display: flex; gap: 10px;
    align-items: center; flex-wrap: wrap;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.controls label { font-size: 13px; color: var(--text-light); white-space: nowrap; }
.btn {
    padding: 7px 16px; border: none; border-radius: 6px;
    cursor: pointer; font-size: 13px; white-space: nowrap;
    transition: all 0.2s; display: inline-flex; align-items: center; gap: 4px;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-light { background: var(--tag-bg); color: var(--text-light); }
.btn-light:hover { background: var(--border); }
select, input[type="text"] {
    padding: 7px 12px; border: 1px solid var(--border);
    border-radius: 6px; font-size: 13px; outline: none;
    transition: border-color 0.2s;
}
select:focus, input[type="text"]:focus { border-color: var(--primary); }

/* ─── Job Cards ─────────────────────── */
.jobs-list { padding: 10px 12px; }
.job-card {
    background: var(--card-bg); margin-bottom: 8px; padding: 14px 16px;
    border-radius: 10px; box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    transition: box-shadow 0.2s, transform 0.1s;
}
.job-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transform: translateY(-1px);
}
.job-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 6px; gap: 8px;
}
.job-title {
    font-size: 15px; font-weight: 600; flex: 1;
}
.job-title a { color: var(--text); text-decoration: none; }
.job-title a:hover { color: var(--primary); }
.source-tag {
    font-size: 11px; padding: 2px 8px; border-radius: 4px;
    white-space: nowrap;
}
.source-tag.job51 { background: #e6f4ff; color: var(--color-51job); }
.source-tag.zhilian { background: #fff1f0; color: var(--color-zhilian); }
.source-tag.boss { background: #e6fffb; color: var(--color-boss); }

.job-company {
    color: var(--text-light); font-size: 13px; margin-bottom: 8px;
}
.job-meta {
    display: flex; gap: 8px; font-size: 12px; color: var(--text-muted);
    flex-wrap: wrap;
}
.job-salary { color: var(--salary); font-weight: 600; }
.job-city-tag {
    background: var(--tag-bg); color: var(--tag-text);
    padding: 1px 6px; border-radius: 3px; font-size: 11px;
}

/* ─── Pagination ────────────────────── */
.pagination {
    text-align: center; padding: 16px; display: flex;
    justify-content: center; gap: 4px;
}
.page-btn {
    min-width: 36px; height: 32px; border: 1px solid var(--border);
    border-radius: 6px; background: white; cursor: pointer;
    font-size: 13px; color: var(--text-light); transition: all 0.15s;
}
.page-btn:hover { border-color: var(--primary); color: var(--primary); }
.page-btn.active {
    background: var(--primary); color: white; border-color: var(--primary);
}
.page-btn.disabled { opacity: 0.4; cursor: default; }

/* ─── Loading / Empty ───────────────── */
.loading-box {
    text-align: center; padding: 40px; color: var(--text-muted);
}
.spinner {
    display: inline-block; width: 24px; height: 24px;
    border: 3px solid var(--border); border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 0.8s linear infinite;
    margin-bottom: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.empty-box { text-align: center; padding: 40px; color: var(--text-muted); }
.empty-box .icon { font-size: 32px; margin-bottom: 8px; }
.empty-box .msg { font-size: 14px; }

/* ─── Coming Soon ────────────────────── */
.coming-soon {
    text-align: center; padding: 60px 20px;
}
.coming-soon .icon { font-size: 48px; margin-bottom: 16px; opacity: 0.6; }
.coming-soon .title { font-size: 18px; color: var(--text); margin-bottom: 8px; }
.coming-soon .desc { font-size: 14px; color: var(--text-muted); }

/* ─── Responsive ────────────────────── */
@media (max-width: 600px) {
    .header h1 { font-size: 18px; }
    .header { padding: 16px 12px; }
    .controls { flex-direction: column; align-items: stretch; padding: 10px; }
    .controls .btn { width: 100%; justify-content: center; }
    .controls input { width: 100%; }
    .tabs { padding: 0 8px; }
    .tab-btn { padding: 8px 12px; font-size: 13px; }
    .job-card { padding: 10px 12px; }
    .job-title { font-size: 14px; }
    .job-meta { font-size: 11px; gap: 6px; }
}