/* MCNetTools 前台样式 */
:root {
  --primary: #2563eb;
  --primary-dark: color-mix(in srgb, var(--primary) 80%, #000);
  --primary-light: color-mix(in srgb, var(--primary) 10%, #fff);
  --bg: #f5f7fa;
  --surface: #fff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(15, 23, 42, .06);
  --ok: #16a34a;
  --warn: #d97706;
  --bad: #dc2626;
}
.dark {
  --bg: #0f172a;
  --surface: #1e293b;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --border: #334155;
  --primary-light: color-mix(in srgb, var(--primary) 15%, #1e293b);
  --shadow: 0 1px 3px rgba(0, 0, 0, .3);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; display: flex; flex-direction: column; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; width: 100%; }
a { color: inherit; text-decoration: none; }

/* 头部 */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; height: 60px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; color: var(--primary); white-space: nowrap; }
.main-nav { display: flex; gap: 2px; flex: 1; }
/* 中屏（769-860px）：压缩导航间距避免溢出（下拉菜单不能被滚动容器裁剪） */
@media (min-width: 769px) and (max-width: 860px) {
  .header-inner { gap: 12px; }
  .main-nav { gap: 0; }
  .main-nav a, .nav-more-btn { padding: 8px 7px; font-size: 13px; }
}
.main-nav a { padding: 8px 12px; border-radius: 8px; font-size: 14px; color: var(--text-muted); white-space: nowrap; transition: all .15s; }
.main-nav a:hover { color: var(--primary); background: var(--primary-light); }
.main-nav a.on { color: var(--primary); background: var(--primary-light); font-weight: 600; }
.nav-toggle { display: none; background: none; border: none; color: var(--text); cursor: pointer; padding: 6px; }

/* 导航：更多工具下拉 */
.nav-more { position: relative; }
.nav-more-btn { display: flex; align-items: center; gap: 4px; padding: 8px 12px; border: none; background: none; border-radius: 8px; font-size: 14px; font-family: inherit; color: var(--text-muted); cursor: pointer; white-space: nowrap; transition: all .15s; }
.nav-more-btn svg { transition: transform .18s; }
.nav-more-btn:hover, .nav-more.on .nav-more-btn { color: var(--primary); background: var(--primary-light); }
.nav-more:hover .nav-more-btn svg, .nav-more.open .nav-more-btn svg { transform: rotate(180deg); }
/* 菜单紧贴按钮（top:100%），顶部12px内边距做视觉间隙，鼠标从按钮移入菜单不断链 */
.nav-more-menu { display: none; position: absolute; top: 100%; left: 0; min-width: 150px; padding: 12px 6px 6px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; box-shadow: 0 12px 32px rgba(15, 23, 42, .14); z-index: 130; }
.nav-more:hover .nav-more-menu, .nav-more.open .nav-more-menu { display: block; }
.nav-more-menu a { display: block; padding: 8px 12px; border-radius: 7px; }

/* 公告 */
.announcement { background: var(--primary-light); color: var(--primary); text-align: center; font-size: 13px; padding: 8px 16px; border-bottom: 1px solid var(--border); }

/* IP归属地：数据源切换条 */
.src-bar { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--border); }
.src-label { font-size: 12px; color: var(--text-muted); }
.src-btn { padding: 4px 12px; border: 1px solid var(--border); background: var(--surface); border-radius: 999px; font-size: 12px; font-family: inherit; color: var(--text-muted); cursor: pointer; transition: all .15s; }
.src-btn:hover { border-color: var(--primary); color: var(--primary); }
.src-btn.cur { background: var(--primary-light); border-color: var(--primary); color: var(--primary); font-weight: 600; }

/* 首页 */
.hero { padding: 44px 0 28px; }
.hero-ip-card { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); border-radius: var(--radius); padding: 36px 40px; color: #fff; box-shadow: 0 8px 24px color-mix(in srgb, var(--primary) 30%, transparent); }
.hero-label { font-size: 13px; opacity: .85; margin-bottom: 8px; }
.hero-ip { font-size: 40px; font-weight: 700; font-family: ui-monospace, Consolas, monospace; letter-spacing: .5px; word-break: break-all; }
.hero-meta { font-size: 14px; opacity: .9; margin-top: 10px; min-height: 20px; }
.hero-actions { margin-top: 18px; display: flex; gap: 10px; }
.hero-actions .btn { background: rgba(255,255,255,.18); border: 1px solid rgba(255,255,255,.35); color: #fff; }
.hero-actions .btn:hover { background: rgba(255,255,255,.3); }
.hero-actions .btn-outline { background: transparent; }

/* 工具卡片 */
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; padding-bottom: 40px; }
.layout-compact .tools-grid { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; }
.tool-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; display: flex; gap: 14px; align-items: flex-start; transition: all .18s; box-shadow: var(--shadow); }
.tool-card:hover { border-color: var(--primary); transform: translateY(-2px); box-shadow: 0 6px 16px color-mix(in srgb, var(--primary) 15%, transparent); }
.tool-icon { width: 42px; height: 42px; border-radius: 10px; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.tool-icon svg { width: 22px; height: 22px; }
.tool-name { font-weight: 600; font-size: 15px; margin-bottom: 4px; }
.tool-desc { font-size: 13px; color: var(--text-muted); line-height: 1.5; word-break: break-word; overflow-wrap: anywhere; }

/* 工具页 */
.tool-page { padding: 32px 0 48px; max-width: 860px; margin: 0 auto; }
.tool-title { font-size: 24px; font-weight: 700; margin-bottom: 6px; }
.tool-subtitle { color: var(--text-muted); font-size: 14px; margin-bottom: 24px; }
.query-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-bottom: 20px; }
.query-row { display: flex; gap: 10px; }
.query-row input[type=text] { flex: 1; padding: 11px 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; background: var(--bg); color: var(--text); outline: none; min-width: 0; }
.query-row input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 12%, transparent); }
.query-row select { padding: 11px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--text); font-size: 14px; outline: none; }
.quick-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }
.quick-tags button { font-size: 12px; padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border); background: var(--bg); color: var(--text-muted); cursor: pointer; }
.quick-tags button:hover { border-color: var(--primary); color: var(--primary); }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; background: var(--primary); color: #fff; border: none; border-radius: 8px; padding: 11px 24px; font-size: 14px; font-weight: 600; cursor: pointer; transition: all .15s; white-space: nowrap; }
.btn:hover { background: var(--primary-dark); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-sm { padding: 7px 14px; font-size: 13px; }

/* 结果区 */
.result-area { display: none; }
.result-area.show { display: block; }
.result-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; margin-bottom: 16px; }
.result-head { padding: 14px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.result-title { font-weight: 600; font-size: 15px; }
.result-meta { font-size: 12px; color: var(--text-muted); }
.result-body { padding: 16px 20px; }

/* 键值表 */
.kv-table { width: 100%; border-collapse: collapse; }
.kv-table th { text-align: left; font-weight: 500; color: var(--text-muted); font-size: 13px; padding: 9px 12px; width: 140px; vertical-align: top; white-space: nowrap; }
.kv-table td { padding: 9px 12px; font-size: 14px; border-left: 1px solid var(--border); word-break: break-all; }
.kv-table tr { border-bottom: 1px solid var(--border); }
.kv-table tr:last-child { border-bottom: none; }
.kv-table td.mono { font-family: ui-monospace, Consolas, monospace; font-size: 13px; }

/* 状态标签 */
.badge { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.badge-ok { background: #dcfce7; color: #16a34a; }
.badge-warn { background: #fef3c7; color: #d97706; }
.badge-bad { background: #fee2e2; color: #dc2626; }
.badge-info { background: var(--primary-light); color: var(--primary); }
.dark .badge-ok { background: #14532d; color: #4ade80; }
.dark .badge-warn { background: #451a03; color: #fbbf24; }
.dark .badge-bad { background: #450a0a; color: #f87171; }

/* Ping终端风格 */
.ping-terminal { background: #0c1425; border-radius: 8px; padding: 16px 18px; font-family: ui-monospace, Consolas, "Courier New", monospace; font-size: 13px; line-height: 1.8; color: #cbd5e1; min-height: 120px; max-height: 400px; overflow-y: auto; }
.ping-terminal .t-ok { color: #4ade80; }
.ping-terminal .t-fail { color: #f87171; }
.ping-terminal .t-info { color: #7dd3fc; }
.ping-terminal .t-dim { color: #64748b; }

/* 记录表 */
.record-table { width: 100%; border-collapse: collapse; }
.record-table th { text-align: left; font-size: 12px; font-weight: 600; color: var(--text-muted); padding: 8px 12px; border-bottom: 2px solid var(--border); }
.record-table td { padding: 9px 12px; font-size: 13px; border-bottom: 1px solid var(--border); word-break: break-all; }
.record-table td.mono { font-family: ui-monospace, Consolas, monospace; }
.record-table .type-badge { font-size: 11px; font-weight: 700; color: var(--primary); background: var(--primary-light); padding: 2px 8px; border-radius: 4px; }

/* 子网计算器 */
.subnet-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.subnet-table th { text-align: left; font-weight: 500; color: var(--text-muted); white-space: nowrap; padding: 10px 14px; width: 118px; }
.subnet-table td { padding: 10px 14px; border-left: 1px solid var(--border); white-space: nowrap; }
.subnet-table tr + tr th, .subnet-table tr + tr td { border-top: 1px solid var(--border); }
.subnet-table .dec { font-family: ui-monospace, Consolas, monospace; }
.subnet-table .dec.strong { font-weight: 700; color: var(--primary); }
.subnet-table .bin { font-family: ui-monospace, Consolas, monospace; font-size: 12px; letter-spacing: 1px; }
.subnet-table .b-net { color: var(--primary); font-weight: 600; }
.subnet-table .b-host { color: var(--text-muted); opacity: .4; }
.subnet-table .b-dot { color: var(--border); padding: 0 1px; }
.subnet-stats { display: flex; flex-wrap: wrap; gap: 10px; padding: 14px 20px; border-top: 1px solid var(--border); background: var(--bg); }
.subnet-stats > div { display: flex; flex-direction: column; gap: 2px; padding: 9px 14px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; min-width: 96px; }
.subnet-stats span { font-size: 12px; color: var(--text-muted); }
.subnet-stats b { font-size: 15px; }
/* 子网计算器分段输入框 */
.sn-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sn-row-label { font-size: 13px; color: var(--text-muted); white-space: nowrap; }
.sn-group { display: flex; align-items: center; gap: 4px; }
.sn-group b { font-weight: 400; color: var(--text-muted); font-size: 15px; user-select: none; }
.sn-oct { width: 46px; text-align: center; padding: 11px 4px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; font-family: ui-monospace, Consolas, monospace; background: var(--bg); color: var(--text); outline: none; transition: border-color .15s, box-shadow .15s; }
.sn-oct:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 12%, transparent); }
.sn-oct.bad { border-color: var(--bad); box-shadow: 0 0 0 3px color-mix(in srgb, var(--bad) 12%, transparent); }
.sn-oct::-webkit-outer-spin-button, .sn-oct::-webkit-inner-spin-button { -webkit-appearance: none; }
.sn-prefix { width: 52px; }
.sn-mask-label { margin-left: 14px; padding-left: 14px; border-left: 1px solid var(--border); color: var(--text); font-weight: 500; }
.sn-row .query-input { flex: 1; min-width: 160px; padding: 11px 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; font-family: ui-monospace, Consolas, monospace; background: var(--bg); color: var(--text); outline: none; }
.sn-row .query-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 12%, transparent); }
.sn-row .query-input.bad { border-color: var(--bad); }
.sn-slash { font-size: 18px; color: var(--text-muted); align-self: center; user-select: none; font-family: ui-monospace, Consolas, monospace; }
.sn-toggle { white-space: nowrap; align-self: center; padding: 11px 14px; border-radius: 8px; border: 1px dashed var(--border); background: transparent; color: var(--text-muted); font-size: 13px; cursor: pointer; }
.sn-toggle:hover { color: var(--primary); border-color: var(--primary); }

/* 重定向链 */
.chain-list { list-style: none; }
.chain-list li { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--border); align-items: flex-start; }
.chain-list li:last-child { border-bottom: none; }
.chain-step { font-size: 12px; font-weight: 700; color: var(--primary); background: var(--primary-light); min-width: 44px; height: 24px; border-radius: 6px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.chain-url { font-size: 13px; word-break: break-all; font-family: ui-monospace, Consolas, monospace; }
.chain-status { margin-top: 3px; }

/* 响应头 */
.headers-list { font-size: 13px; }
.headers-list .h-row { display: flex; gap: 10px; padding: 6px 0; border-bottom: 1px dashed var(--border); }
.headers-list .h-row:last-child { border-bottom: none; }
.headers-list .h-key { color: var(--primary); font-weight: 600; white-space: nowrap; font-family: ui-monospace, Consolas, monospace; }
.headers-list .h-val { word-break: break-all; font-family: ui-monospace, Consolas, monospace; }

/* 错误提示 */
.error-tip { background: #fee2e2; color: #dc2626; border: 1px solid #fecaca; border-radius: 8px; padding: 12px 16px; font-size: 14px; margin-bottom: 16px; }
.dark .error-tip { background: #450a0a; border-color: #7f1d1d; }

/* 加载中 */
.loading-tip { text-align: center; color: var(--text-muted); font-size: 14px; padding: 30px 0; }
.spinner { display: inline-block; width: 22px; height: 22px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin .7s linear infinite; vertical-align: middle; margin-right: 8px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* 页脚 */
.site-footer { margin-top: auto; background: var(--surface); border-top: 1px solid var(--border); padding: 24px 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-bottom: 14px; }
.footer-links a { font-size: 12px; color: var(--text-muted); }
.footer-links a:hover { color: var(--primary); }
.footer-meta { font-size: 12px; color: var(--text-muted); display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
.footer-meta a:hover { color: var(--primary); }
.admin-entry { opacity: .35; transition: opacity .2s; text-decoration: none; }
.admin-entry:hover { opacity: 1; }

/* 404 */
.notfound { text-align: center; padding: 80px 0; }
.notfound h1 { font-size: 64px; color: var(--primary); margin-bottom: 10px; }
.notfound p { color: var(--text-muted); margin-bottom: 24px; }

/* 响应式 */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .main-nav { display: none; position: absolute; top: 60px; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--border); padding: 10px 20px; flex-direction: column; }
  .main-nav.open { display: flex; }
  .nav-more-menu { position: static; display: block; box-shadow: none; border: none; padding: 0 0 4px 12px; min-width: 0; }
  .nav-more-btn { width: 100%; }
  .nav-more-btn svg { transform: rotate(180deg); }
  .hero-ip { font-size: 28px; }
  .hero-ip-card { padding: 26px 24px; }
  .query-row { flex-direction: column; }
  .kv-table th { width: 100px; }
}