:root {
  --bg: #0b0b0d;
  --card: #16171a;
  --card-border: #232529;
  --text: #e8eaed;
  --text-dim: #8b8f96;
  --text-faint: #5b5f66;
  --blue: #3b82f6;
  --blue-bg: rgba(59, 130, 246, 0.15);
  --green: #22c55e;
  --green-bg: rgba(34, 197, 94, 0.15);
  --yellow: #eab308;
  --orange: #f97316;
  --red: #ef4444;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 24px 48px;
}

/* Header */
.site-header h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 1px;
}
.subtitle {
  margin-top: 8px;
  color: var(--text-dim);
  font-size: 15px;
}
.hl { color: var(--text); font-weight: 500; }

/* Cards */
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 24px;
}

.main-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
}

/* IP block */
.ip-block { padding: 4px 0; }
.ip-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.field-label {
  color: var(--text-dim);
  font-size: 13px;
}
.ip-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-dim);
  width: 28px; height: 28px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  transition: all .15s;
}
.icon-btn:hover { color: var(--text); border-color: var(--text-faint); }
.flag {
  width: 28px; height: 20px;
  border-radius: 4px;
  object-fit: cover;
  background: #2a2c30;
}
.ip-value {
  font-size: 22px;
  font-weight: 600;
  font-family: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  word-break: break-all;
  margin-bottom: 12px;
}
.info-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 14px;
  color: var(--text-dim);
}
.info-row span:last-child {
  color: var(--text);
  text-align: right;
  word-break: break-all;
}
.divider {
  height: 1px;
  background: var(--card-border);
  margin: 20px 0;
}

/* Sources */
.source-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--card-border);
}
.source-item:last-of-type { border-bottom: none; }
.source-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.source-name { font-weight: 600; font-size: 15px; }
.source-ip { font-size: 14px; color: var(--text-dim); margin-bottom: 2px; }
.source-loc { font-size: 14px; color: var(--text); }
/* Badges */
.badge {
  font-size: 12px;
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: 500;
}
.badge.domestic {
  color: var(--blue);
  background: var(--blue-bg);
  border: 1px solid rgba(59, 130, 246, 0.3);
}
.badge.intl {
  color: var(--green);
  background: var(--green-bg);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

/* Info bar */
.info-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 14px 24px;
  margin-top: 20px;
}
.info-icon {
  color: var(--text-dim);
  font-size: 18px;
}
.toggles { display: flex; gap: 24px; flex-wrap: wrap; }
.toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text);
  user-select: none;
}
.toggle input { display: none; }
.slider {
  width: 40px; height: 22px;
  background: #2a2c30;
  border-radius: 999px;
  position: relative;
  transition: background .2s;
}
.slider::after {
  content: "";
  position: absolute;
  width: 16px; height: 16px;
  background: #fff;
  border-radius: 50%;
  top: 3px; left: 3px;
  transition: transform .2s;
}
.toggle input:checked + .slider { background: var(--blue); }
.toggle input:checked + .slider::after { transform: translateX(18px); }

/* Ping grid */
.ping-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 20px;
}
.ping-item {
  padding: 8px 0;
}
.ping-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.site-name { font-weight: 600; font-size: 15px; }
.ping-body {
  display: flex;
  align-items: center;
  gap: 12px;
}
.ping-ms {
  font-family: "SF Mono", Menlo, monospace;
  font-weight: 700;
  font-size: 16px;
  min-width: 56px;
}
.ping-dots {
  display: flex;
  gap: 4px;
}
.ping-dots .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #2a2c30;
}

/* Ping colors */
.ping-ms.good { color: var(--green); }
.ping-ms.ok { color: var(--yellow); }
.ping-ms.bad { color: var(--orange); }
.ping-ms.fail { color: var(--red); }

/* Footer */
.site-footer {
  margin-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-faint);
  font-size: 13px;
}
.reload-btn {
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text);
  padding: 6px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  transition: all .15s;
}
.reload-btn:hover { border-color: var(--text-faint); }

/* Hidden states (toggles) */
body.hide-ip .ip-value,
body.hide-ip .src-ip,
body.hide-ip .src-ip-raw { color: transparent; text-shadow: 0 0 8px rgba(255,255,255,0.35); }

body.hide-domestic .source-item[data-source="ip138"],
body.hide-domestic .source-item[data-source="ipcn"],
body.hide-domestic .ping-item[data-region="domestic"] {
  opacity: 0.25;
  pointer-events: none;
}
body.hide-intl .source-item[data-source="cloudflare"],
body.hide-intl .source-item[data-source="ipinfo"],
body.hide-intl .ping-item[data-region="intl"] {
  opacity: 0.25;
  pointer-events: none;
}

/* Responsive */
@media (max-width: 900px) {
  .main-grid { grid-template-columns: 1fr; }
  .ping-grid { grid-template-columns: repeat(2, 1fr); }
  .info-bar { flex-direction: column; align-items: flex-start; gap: 14px; }
  .toggles { gap: 16px; }
}
@media (max-width: 480px) {
  .ping-grid { grid-template-columns: 1fr; }
  .container { padding: 20px 16px; }
  .site-header h1 { font-size: 26px; }
}