* { margin:0; padding:0; box-sizing:border-box; }

/* ============ View Transitions ============ */
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: .45s;
  animation-timing-function: cubic-bezier(.25, .46, .45, .94);
  animation-fill-mode: both;
}
::view-transition-old(root) { animation-name: vtout; }
::view-transition-new(root) { animation-name: vtin; }
@keyframes vtout { from { opacity: 1; } to { opacity: 0; } }
@keyframes vtin  { from { opacity: 0; } to { opacity: 1; } }

/* ============ Theme ============ */
:root {
  --bg1: #070b1a;
  --bg2: #0d1330;
  --bg3: #131a3d;
  --card: rgba(255,255,255,.045);
  --card-border: rgba(255,255,255,.09);
  --text: #e8ecf8;
  --muted: #8b94b0;
  --faint: #5b6480;
  --mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --ok: #34d399;
  --warn: #fbbf24;
  --bad: #f87171;
  --v4: #60a5fa;
  --v6: #2dd4bf;
  --shadow: 0 20px 60px rgba(2,6,23,.45);
  --radius: 16px;
  --glow: rgba(99,102,241,.06);
  --chart-line: rgba(99,102,241,.5);
  --chart-fill: rgba(99,102,241,.12);
}

[data-theme="light"] {
  --bg1: #eef2fa;
  --bg2: #e3e9f6;
  --bg3: #d8e1f2;
  --card: rgba(255,255,255,.8);
  --card-border: rgba(15,23,42,.10);
  --text: #0f172a;
  --muted: #5b6478;
  --faint: #8b94ad;
  --v4: #2563eb;
  --v6: #0d9488;
  --shadow: 0 20px 50px rgba(30,41,59,.14);
  --glow: rgba(99,102,241,.04);
  --chart-line: rgba(37,99,235,.5);
  --chart-fill: rgba(37,99,235,.1);
}

body {
  font-family: var(--sans);
  color: var(--text);
  background-color: var(--bg1);
  min-height: 100vh;
  line-height: 1.55;
  position: relative;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -1;
  background-image: linear-gradient(160deg, var(--bg1), var(--bg2) 55%, var(--bg3));
  pointer-events: none;
}

.wrap { max-width: 960px; margin: 0 auto; padding: 32px 20px 60px; }

/* ============ Header ============ */
header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap; margin-bottom: 20px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  display: flex; align-items: center; justify-content: center; color: #fff;
  background: linear-gradient(135deg, #6366f1, #22d3ee);
  box-shadow: 0 6px 20px rgba(99,102,241,.35);
}
.logo svg { width: 24px; height: 24px; }
.brand h1 {
  font-size: 24px; letter-spacing: .5px;
  background: linear-gradient(90deg, #a5b4fc, #67e8f9);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
[data-theme="light"] .brand h1 {
  background: linear-gradient(90deg, #4338ca, #0e7490);
  -webkit-background-clip: text; background-clip: text;
}
.brand .sub { color: var(--muted); font-size: 12px; margin-top: 2px; }

.actions { display: flex; gap: 8px; }
.btn {
  border: 1px solid var(--card-border); border-radius: 10px; cursor: pointer;
  font-family: var(--sans); font-size: 13px; color: var(--text);
  padding: 8px 14px; display: inline-flex; align-items: center; gap: 6px;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  background: var(--card);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: scale(.96); }
.btn.primary {
  background: linear-gradient(135deg, #6366f1, #8b5cf6); border: none; color: #fff;
  box-shadow: 0 6px 18px rgba(99,102,241,.3);
}
.btn.primary:hover { box-shadow: 0 8px 22px rgba(99,102,241,.45); }
.btn:disabled { opacity: .55; cursor: default; transform: none; }
.btn-spin { display: none; width: 13px; height: 13px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; }
.btn.loading .btn-spin { display: inline-block; }
.btn.ghost { font-size: 18px; padding: 8px 10px; line-height: 1; }
.btn.ghost-lg { font-size: 15px; padding: 7px 14px; line-height: 1; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ============ Tab Bar ============ */
.tabs {
  display: flex; gap: 4px; margin-bottom: 20px;
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 14px; padding: 4px; overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.tab {
  flex: 1; min-width: 0; padding: 10px 12px; border: none; border-radius: 10px;
  background: transparent; color: var(--muted); font-family: var(--sans);
  font-size: 13px; font-weight: 600; cursor: pointer; white-space: nowrap;
  transition: all .2s ease; display: flex; align-items: center; justify-content: center; gap: 6px;
}
.tab:hover { color: var(--text); background: rgba(255,255,255,.03); }
.tab.active {
  color: var(--text); background: var(--card);
  box-shadow: 0 4px 12px rgba(0,0,0,.15);
}
[data-theme="light"] .tab:hover { background: rgba(15,23,42,.04); }
.tab-icon { font-size: 16px; }

.tab-panel { display: none; }
.tab-panel.active { display: block; animation: tabIn .3s ease both; }
@keyframes tabIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ============ Panel ============ */
.panel {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

/* ============ 检测 Tab ============ */
.verdict { padding: 20px 22px; margin-bottom: 22px; }
.v-head {
  font-size: 11px; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--faint); margin-bottom: 12px;
}
.v-fam-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .v-fam-grid { grid-template-columns: 1fr; } }
.v-fam {
  border: 1px solid var(--card-border); border-radius: 12px;
  padding: 14px 16px; background: rgba(255,255,255,.02);
}
[data-theme="light"] .v-fam { background: rgba(15,23,42,.025); }
.v-fam-head { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.v-title { font-size: 15px; font-weight: 700; }
.v-title.ok { color: var(--ok); }
.v-title.warn { color: var(--warn); }
.v-title.bad { color: var(--bad); }
.v-head-label { display: flex; align-items: center; gap: 6px; }

/* 分流结论：表格式 grid，固定标签列 + 缩放 IP 列，结构保证对齐 */
.v-table {
  display: flex; flex-direction: column; gap: 4px;
  border: 1px solid var(--card-border); border-radius: 10px; padding: 8px 10px;
}
.v-gridrow {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  align-items: center; gap: 10px; min-height: 24px;
}
.v-lbl {
  font-size: 12px; font-weight: 700; white-space: nowrap;
  text-align: left; overflow: hidden; text-overflow: ellipsis; min-width: 0;
}
.v-val {
  font-family: var(--mono); font-size: 14px; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0;
  background: rgba(255,255,255,.05); border: 1px solid var(--card-border);
  padding: 2px 8px; border-radius: 6px; text-align: left;
}
[data-theme="light"] .v-val { background: rgba(15,23,42,.04); }
.v-val.na { color: var(--faint); background: transparent; border-style: dashed; }
.v-time {
  margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--card-border);
  color: var(--faint); font-size: 11.5px;
}

/* Cards */
.cards {
  display: grid; grid-template-columns: 1fr;
  gap: 14px; margin-bottom: 22px;
}
@media (min-width: 700px) {
  .cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius); padding: 16px 18px;
  box-shadow: var(--shadow), 0 0 60px var(--glow);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  animation: rise .5s cubic-bezier(.16,1,.3,1) both; animation-delay: var(--d);
  transition: transform .18s cubic-bezier(.16,1,.3,1), border-color .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 40%, var(--card-border)); }
@keyframes rise { from { opacity: 0; transform: translateY(12px) scale(.97); } to { opacity: 1; transform: none; } }

.card-top { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 12px; }
.card-icon {
  width: 38px; height: 38px; border-radius: 10px; flex: none;
  display: flex; align-items: center; justify-content: center;
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  color: var(--accent);
}
.card-icon svg { width: 20px; height: 20px; }
.card-icon .big { font-size: 20px; line-height: 1; }
.card-title { flex: 1; min-width: 0; }
.card-title h3 { font-size: 16px; }
.card-title p { font-size: 11.5px; color: var(--muted); }
.card-retry {
  width: 30px; height: 30px; flex: none; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--card-border); background: transparent; color: var(--muted);
  display: flex; align-items: center; justify-content: center;
  transition: all .15s ease;
}
.card-retry svg { width: 16px; height: 16px; }
.card-retry:hover { color: var(--accent); border-color: var(--accent); transform: rotate(-30deg); }
.card-retry:active { transform: rotate(-30deg) scale(.9); }

.frow { padding: 10px 0; }
.frow + .frow { border-top: 1px dashed var(--card-border); }
.frow-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.fchip {
  font-size: 10.5px; font-weight: 700; letter-spacing: .5px;
  padding: 1px 8px; border-radius: 999px; border: 1px solid;
}
.fchip.v4 { color: var(--v4); border-color: color-mix(in srgb, var(--v4) 45%, transparent); background: color-mix(in srgb, var(--v4) 10%, transparent); }
.fchip.v6 { color: var(--v6); border-color: color-mix(in srgb, var(--v6) 45%, transparent); background: color-mix(in srgb, var(--v6) 10%, transparent); }
.pill {
  font-size: 11px; padding: 1px 9px; border-radius: 999px;
  display: inline-flex; align-items: center; gap: 5px;
  border: 1px solid var(--card-border); color: var(--muted);
}
.pill.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); background: color-mix(in srgb, var(--ok) 10%, transparent); }
.pill.fail { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, transparent); background: color-mix(in srgb, var(--bad) 10%, transparent); }
.pill.timeout { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); background: color-mix(in srgb, var(--warn) 10%, transparent); }
.spinner {
  width: 10px; height: 10px; border: 2px solid var(--muted); border-top-color: transparent;
  border-radius: 50%; animation: spin .7s linear infinite;
}
.frow-body { display: flex; align-items: center; gap: 8px; position: relative; }
.frow-body .ip {
  font-family: var(--mono); font-size: 18px; font-weight: 700; letter-spacing: .3px;
  white-space: nowrap; color: var(--text); cursor: default;
  flex: 1; min-width: 0; line-height: 1.25;
}
.frow-body .ip.failed { color: var(--bad); font-size: 14px; }

/* 来源标注 — 紧凑小标签，位于行头，不遮挡 IP 与复制按钮 */
.source-tip {
  display: inline-block;
  font-size: 10px; font-weight: 500; letter-spacing: .3px;
  padding: 0 6px; border-radius: 4px; height: 18px; line-height: 18px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
  color: color-mix(in srgb, var(--accent) 75%, var(--text));
  white-space: nowrap; max-width: 100%; overflow: hidden; text-overflow: ellipsis;
}
[data-theme="light"] .source-tip { background: color-mix(in srgb, var(--accent) 9%, transparent); }

.copy {
  width: 28px; height: 28px; flex: none; border-radius: 7px; cursor: pointer;
  border: 1px solid var(--card-border); background: transparent; color: var(--muted);
  display: flex; align-items: center; justify-content: center;
  transition: all .15s ease;
}
.copy svg { width: 14px; height: 14px; }
.copy:hover:not(:disabled) { color: var(--accent); border-color: var(--accent); }
.copy:active:not(:disabled) { transform: scale(.88); }
.copy:disabled { opacity: .35; cursor: default; }
.copy.done { color: var(--ok); border-color: var(--ok); }
.geo { font-size: 12px; color: var(--muted); margin-top: 4px; min-height: 1em; }

/* ============ 分析 Tab ============ */
.panel-grid {
  display: grid; grid-template-columns: 1fr; gap: 14px;
}
@media (min-width: 700px) {
  .panel-grid { grid-template-columns: 1fr 1fr; }
  .panel-grid .an-card:last-child { grid-column: 1 / -1; }
}
.an-card { padding: 18px 20px; }
.an-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 700; margin-bottom: 12px; padding-bottom: 10px;
  border-bottom: 1px solid var(--card-border);
}
.an-icon { font-size: 18px; }
.an-body { font-size: 13px; color: var(--text); line-height: 1.7; }
.an-placeholder { color: var(--faint); font-size: 13px; text-align: center; padding: 20px 0; }

/* NAT / DNS / Diag result items */
.an-item { display: flex; align-items: flex-start; gap: 8px; padding: 4px 0; }
.an-item .label { color: var(--muted); min-width: 80px; flex: none; }
.an-item .value { font-weight: 600; }
.an-item .value.ok { color: var(--ok); }
.an-item .value.warn { color: var(--warn); }
.an-item .value.bad { color: var(--bad); }
.an-badge {
  display: inline-block; font-size: 11px; padding: 1px 10px; border-radius: 999px;
  border: 1px solid; font-weight: 600;
}
.an-badge.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); background: color-mix(in srgb, var(--ok) 10%, transparent); }
.an-badge.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); background: color-mix(in srgb, var(--warn) 10%, transparent); }
.an-badge.bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, transparent); background: color-mix(in srgb, var(--bad) 10%, transparent); }
.an-badge.info { color: var(--v4); border-color: color-mix(in srgb, var(--v4) 40%, transparent); background: color-mix(in srgb, var(--v4) 10%, transparent); }
.an-dns-list { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.an-dns-item { display: flex; align-items: center; gap: 8px; padding: 3px 0; }
.an-dns-item .dns-provider { min-width: 70px; font-size: 12px; color: var(--muted); }
.an-dns-item .dns-ip { font-family: var(--mono); font-size: 12px; }
.an-dns-item .dns-status { font-size: 14px; }

/* ============ 历史 Tab ============ */
.hist-summary { padding: 18px 20px; margin-bottom: 14px; }
.hist-summary-inner { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }
.hist-stat { text-align: center; }
.stat-num {
  display: block; font-size: 28px; font-weight: 800;
  background: linear-gradient(135deg, #6366f1, #22d3ee);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-label { font-size: 12px; color: var(--muted); }

.hist-chart-wrap { padding: 18px 20px; margin-bottom: 14px; position: relative; }
.hist-chart-wrap canvas { width: 100%; height: 180px; display: block; }
.chart-empty {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  color: var(--faint); font-size: 14px; pointer-events: none;
}

.hist-list-wrap { padding: 18px 20px; margin-bottom: 14px; max-height: 400px; overflow-y: auto; }
.hist-list-wrap::-webkit-scrollbar { width: 4px; }
.hist-list-wrap::-webkit-scrollbar-thumb { background: var(--card-border); border-radius: 4px; }
.hist-item {
  display: flex; align-items: center; gap: 10px; padding: 8px 0;
  border-bottom: 1px solid var(--card-border); font-size: 12px;
}
.hist-item:last-child { border-bottom: none; }
.hist-item .hist-time { color: var(--faint); min-width: 58px; flex: none; }
.hist-item .hist-detail { flex: 1; min-width: 0; }
.hist-item .hist-detail .hist-ip { font-family: var(--mono); font-size: 12px; }
.hist-item .hist-summary-text { color: var(--muted); font-size: 11px; }
.hist-clear { margin-top: 8px; font-size: 12px; color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, transparent); }
.hist-clear:hover { background: color-mix(in srgb, var(--bad) 10%, transparent); }

/* ============ 规则 Tab ============ */
.cf-card { padding: 16px 18px; margin-bottom: 14px; }
.cf-head {
  display: flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 700; margin-bottom: 10px;
}
.cf-head .cf-copy { margin-left: auto; font-size: 16px; padding: 4px 10px; }
.cf-body {
  font-family: var(--mono); font-size: 12px; line-height: 1.6;
  background: rgba(0,0,0,.2); border-radius: 10px; padding: 14px;
  overflow-x: auto; white-space: pre; color: var(--text);
  max-height: 240px; overflow-y: auto;
}
[data-theme="light"] .cf-body { background: rgba(15,23,42,.04); }
.cf-body::-webkit-scrollbar { width: 4px; height: 4px; }
.cf-body::-webkit-scrollbar-thumb { background: var(--card-border); border-radius: 4px; }

/* ============ 工具 Tab ============ */
.tool-row { display: flex; gap: 8px; margin-bottom: 10px; }
.tool-input {
  flex: 1; min-width: 0;
  font-family: var(--mono); font-size: 13px; color: var(--text);
  background: rgba(255,255,255,.04); border: 1px solid var(--card-border);
  border-radius: 8px; padding: 8px 12px; outline: none;
  transition: border-color .2s ease, background .2s ease;
}
.tool-input::placeholder { color: var(--faint); }
.tool-input:focus { border-color: color-mix(in srgb, var(--v4) 55%, var(--card-border)); }
[data-theme="light"] .tool-input { background: rgba(15,23,42,.04); }
.tool-go { flex: none; font-size: 13px; }
.tool-out { font-size: 13px; line-height: 1.7; }
.tool-out .an-item { padding: 3px 0; }
.tool-out .tool-table { width: 100%; border-collapse: collapse; font-size: 12px; margin-top: 6px; }
.tool-table th, .tool-table td { text-align: left; padding: 5px 8px; border-bottom: 1px solid var(--card-border); }
.tool-table th { color: var(--muted); font-weight: 600; }

/* ============ Toast ============ */
.toast {
  position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(80px);
  z-index: 999; pointer-events: none;
  background: var(--card); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border); border-radius: 10px;
  box-shadow: 0 8px 30px rgba(0,0,0,.3);
  padding: 10px 20px; font-size: 13px; color: var(--text);
  opacity: 0; transition: opacity .25s ease, transform .3s cubic-bezier(.16,1,.3,1);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============ Share Overlay ============ */
.share-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,.6); backdrop-filter: blur(8px);
  display: none; align-items: center; justify-content: center;
  padding: 20px;
}
.share-overlay.active { display: flex; }
.share-card {
  background: #0f172a; border-radius: 20px; padding: 24px;
  box-shadow: 0 40px 80px rgba(0,0,0,.5); max-width: 640px; width: 100%;
}
.share-actions { display: flex; gap: 10px; margin-top: 16px; justify-content: flex-end; }
.share-actions .btn { font-size: 14px; }
#shareCanvas { width: 100%; border-radius: 12px; display: block; }

/* ============ Progress ============ */
.progress-bar {
  position: fixed; top: 0; left: 0; width: 100%; height: 3px; z-index: 100;
  pointer-events: none; opacity: 0;
  transition: opacity .2s ease;
}
.progress-bar.active { opacity: 1; }
.progress-bar .track {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, #6366f1, #22d3ee);
  border-radius: 0 2px 2px 0;
  transition: width .3s cubic-bezier(.16,1,.3,1);
}

/* ============ Footer ============ */
footer { text-align: center; color: var(--faint); font-size: 12px; padding-top: 8px; }

.noscript {
  position: fixed; top: 0; left: 0; right: 0; z-index: 99;
  background: #f87171; color: #fff; text-align: center; padding: 10px; font-size: 14px;
}