/* 短链接系统 - 样式（浅色主题） */
:root {
    --bg: #f6f7f9;
    --surface: #ffffff;
    --border: #e4e7ec;
    --border-strong: #d3d8e0;
    --text: #1f2430;
    --text-muted: #6b7280;
    --text-soft: #9aa1ac;
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-soft: #eef2ff;
    --success: #059669;
    --success-soft: #ecfdf5;
    --danger: #dc2626;
    --danger-soft: #fef2f2;
    --warn: #b45309;
    --warn-soft: #fffbeb;
    --radius: 14px;
    --radius-sm: 9px;
    --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 8px 24px -12px rgba(16, 24, 40, .12);
    --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); }
code { font-family: var(--mono); font-size: .92em; }

.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* ---------- Header ---------- */
.site-header {
    background: rgba(255, 255, 255, .82);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 20;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 650; letter-spacing: -.01em; }
.brand:hover { color: var(--text); }
.brand-mark {
    display: grid; place-items: center;
    width: 30px; height: 30px; border-radius: 9px;
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: #fff; font-size: 13px; font-weight: 700; font-family: var(--mono);
}
.brand-text { font-size: 16px; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
    padding: 7px 12px; border-radius: var(--radius-sm);
    color: var(--text-muted); font-size: 14px; font-weight: 500;
    transition: background .15s, color .15s;
}
.nav-link:hover { background: #f1f2f5; color: var(--text); }
.nav-link.is-active { background: var(--primary-soft); color: var(--primary); }
.inline-form { display: inline; margin: 0; }

/* ---------- Layout ---------- */
.main { flex: 1 1 auto; padding: 36px 20px 56px; }
.site-footer {
    border-top: 1px solid var(--border);
    background: #fff; color: var(--text-soft);
    font-size: 13px; padding: 18px 0;
}
.site-footer .wrap { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.foot-sep { color: var(--border-strong); }

/* ---------- Cards ---------- */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 22px;
}
.card + .card { margin-top: 18px; }
.card-title { margin: 0 0 16px; font-size: 15px; font-weight: 650; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.card-hint { font-size: 13px; color: var(--text-soft); font-weight: 400; }

/* ---------- Hero ---------- */
.hero { text-align: center; margin-bottom: 30px; }
.hero h1 {
    margin: 0 0 10px; font-size: 34px; line-height: 1.25; letter-spacing: -.02em; font-weight: 700;
}
.hero p { margin: 0 auto; max-width: 620px; color: var(--text-muted); }

/* ---------- Forms ---------- */
.field { margin-bottom: 14px; }
.label { display: block; font-size: 13px; font-weight: 600; color: var(--text-muted); margin-bottom: 6px; }
.input, .select {
    width: 100%; padding: 11px 13px;
    border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
    background: #fff; color: var(--text); font-size: 14px; font-family: inherit;
    transition: border-color .15s, box-shadow .15s;
}
.input:focus, .select:focus {
    outline: none; border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, .12);
}
.input::placeholder { color: var(--text-soft); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0 14px; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 7px;
    padding: 10px 18px; border: 1px solid transparent; border-radius: var(--radius-sm);
    font-size: 14px; font-weight: 600; font-family: inherit; cursor: pointer;
    transition: background .15s, border-color .15s, color .15s, transform .05s;
    white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; }
.btn-ghost { background: #fff; border-color: var(--border-strong); color: var(--text-muted); }
.btn-ghost:hover { background: #f7f8fa; color: var(--text); }
.btn-danger { background: #fff; border-color: #f1b4b4; color: var(--danger); }
.btn-danger:hover { background: var(--danger-soft); }
.btn-sm { padding: 6px 11px; font-size: 13px; border-radius: 7px; }
.btn-lg { padding: 12px 26px; font-size: 15px; }
.btn-block { width: 100%; }
.btn.is-copied { background: var(--success); border-color: var(--success); color: #fff; }

/* ---------- Result ---------- */
.result-box {
    margin-top: 18px; padding: 16px 18px;
    border: 1px solid #c7d2fe; border-radius: var(--radius-sm);
    background: linear-gradient(180deg, #f5f7ff, #eef2ff);
    animation: pop .25s ease-out;
}
@keyframes pop { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
.result-label { font-size: 12.5px; font-weight: 600; color: var(--primary); margin-bottom: 8px; }
.result-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.result-url {
    flex: 1 1 260px; min-width: 0;
    padding: 10px 12px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm);
    font-family: var(--mono); font-size: 14px; word-break: break-all;
}
.result-meta { margin-top: 8px; font-size: 12.5px; color: var(--text-muted); }

/* ---------- Flash ---------- */
.flash {
    padding: 11px 14px; border-radius: var(--radius-sm); margin-bottom: 18px;
    font-size: 14px; border: 1px solid transparent;
}
.flash-success { background: var(--success-soft); border-color: #a7f3d0; color: #065f46; }
.flash-error { background: var(--danger-soft); border-color: #fecaca; color: #991b1b; }

/* ---------- Stats strip ---------- */
.stat-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 22px; }
.stat-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 16px 18px; box-shadow: var(--shadow);
}
.stat-num { font-size: 26px; font-weight: 700; letter-spacing: -.02em; line-height: 1.2; }
.stat-label { font-size: 12.5px; color: var(--text-muted); margin-top: 2px; }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.data { width: 100%; border-collapse: collapse; font-size: 14px; }
table.data th {
    text-align: left; font-size: 12.5px; font-weight: 600; color: var(--text-muted);
    padding: 10px 12px; border-bottom: 1px solid var(--border); white-space: nowrap;
    background: #fbfbfc;
}
table.data td { padding: 12px; border-bottom: 1px solid #f0f1f4; vertical-align: middle; }
table.data tr:last-child td { border-bottom: none; }
table.data tbody tr:hover { background: #fafbfc; }
.cell-code { font-family: var(--mono); font-weight: 600; color: var(--primary); }
.cell-target { max-width: 380px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-muted); }
.cell-actions { display: flex; gap: 6px; justify-content: flex-end; }
.muted { color: var(--text-soft); }
.nowrap { white-space: nowrap; }

/* ---------- Badge ---------- */
.badge {
    display: inline-block; padding: 2px 9px; border-radius: 999px;
    font-size: 12px; font-weight: 600; border: 1px solid transparent;
}
.badge-ok { background: var(--success-soft); color: var(--success); border-color: #a7f3d0; }
.badge-off { background: #f3f4f6; color: var(--text-muted); border-color: var(--border); }
.badge-exp { background: var(--warn-soft); color: var(--warn); border-color: #fde68a; }

/* ---------- Chart ---------- */
.chart { display: flex; align-items: flex-end; gap: 8px; height: 150px; padding-top: 10px; }
.chart-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; min-width: 0; }
.chart-bar {
    width: 100%; max-width: 34px; border-radius: 6px 6px 3px 3px;
    background: linear-gradient(180deg, #818cf8, #4f46e5);
    min-height: 3px; transition: filter .15s;
}
.chart-bar:hover { filter: brightness(1.12); }
.chart-val { font-size: 11px; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.chart-day { font-size: 10.5px; color: var(--text-soft); font-variant-numeric: tabular-nums; }
.chart-empty { display: grid; place-items: center; height: 150px; color: var(--text-soft); font-size: 14px; }

/* ---------- Misc ---------- */
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.page-title { margin: 0; font-size: 22px; font-weight: 700; letter-spacing: -.01em; }
.toolbar { display: flex; gap: 8px; flex-wrap: wrap; }
.search-form { display: flex; gap: 8px; }
.search-form .input { width: 260px; }
.pager { display: flex; gap: 6px; align-items: center; justify-content: center; margin-top: 18px; flex-wrap: wrap; }
.pager a, .pager span {
    padding: 6px 11px; border: 1px solid var(--border); border-radius: 8px;
    background: #fff; color: var(--text-muted); font-size: 13px; font-weight: 500;
}
.pager .current { background: var(--primary); color: #fff; border-color: var(--primary); }
.empty { text-align: center; padding: 46px 20px; color: var(--text-soft); }
.empty-mark { font-size: 34px; display: block; margin-bottom: 10px; }
.kv { display: grid; grid-template-columns: 92px 1fr; gap: 8px 14px; font-size: 14px; }
.kv dt { color: var(--text-muted); font-size: 13px; }
.kv dd { margin: 0; word-break: break-all; }
.api-sample {
    background: #0f172a; color: #e2e8f0; padding: 15px 17px; border-radius: var(--radius-sm);
    font-family: var(--mono); font-size: 12.8px; line-height: 1.7; overflow-x: auto; margin: 0;
}
.api-sample .c { color: #7dd3fc; }
.api-sample .k { color: #c4b5fd; }
.split { display: grid; grid-template-columns: 1.4fr 1fr; gap: 18px; align-items: start; }
.notice { font-size: 13px; color: var(--text-muted); background: #fbfbfc; border: 1px dashed var(--border); border-radius: var(--radius-sm); padding: 11px 13px; }
.center-block { max-width: 420px; margin: 40px auto; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
    .stat-strip { grid-template-columns: repeat(2, 1fr); }
    .split { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
    .hero h1 { font-size: 26px; }
    .header-inner { height: 56px; }
    .nav-link { padding: 6px 9px; font-size: 13px; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .search-form { width: 100%; }
    .search-form .input { flex: 1; width: auto; }
    .cell-target { max-width: 200px; }
}