/* ── Light theme (default) ────────────────────────────── */
:root {
  --bg: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card2: #f8fafc;
  --bg-hover: #f1f5f9;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --header-bg: rgba(248, 250, 252, 0.9);
  --row-border: rgba(148, 163, 184, 0.25);

  --text: #0f172a;
  --text-sec: #475569;
  --text-muted: #94a3b8;

  --accent: #6366f1;
  --accent-light: #4f46e5;
  --accent-glow: rgba(99, 102, 241, 0.1);

  --good: #059669;
  --good-bg: rgba(5, 150, 105, 0.08);
  --good-border: rgba(5, 150, 105, 0.3);

  --info: #2563eb;
  --info-bg: rgba(37, 99, 235, 0.08);
  --info-border: rgba(37, 99, 235, 0.3);

  --warn: #d97706;
  --warn-bg: rgba(217, 119, 6, 0.08);
  --warn-border: rgba(217, 119, 6, 0.3);

  --danger: #dc2626;
  --danger-bg: rgba(220, 38, 38, 0.08);
  --danger-border: rgba(220, 38, 38, 0.3);

  --muted-bg: rgba(100, 116, 139, 0.06);
  --muted-border: rgba(100, 116, 139, 0.2);

  --mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, 'Courier New', monospace;
  --ui: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --r: 8px;
  --r-lg: 12px;
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.07);
}

/* ── Dark theme ───────────────────────────────────────── */
[data-theme="dark"] {
  --bg: #0a0f1e;
  --bg-card: #0f1629;
  --bg-card2: #141d35;
  --bg-hover: #192040;
  --border: #1e2a45;
  --border-strong: #2a3a5c;
  --header-bg: rgba(10, 15, 30, 0.8);
  --row-border: var(--row-border);

  --text: #e8eeff;
  --text-sec: #8892b0;
  --text-muted: #4a5568;

  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.15);

  --good: #10b981;
  --good-bg: rgba(16, 185, 129, 0.08);
  --good-border: rgba(16, 185, 129, 0.3);

  --info: #3b82f6;
  --info-bg: rgba(59, 130, 246, 0.08);
  --info-border: rgba(59, 130, 246, 0.3);

  --warn: #f59e0b;
  --warn-bg: rgba(245, 158, 11, 0.08);
  --warn-border: rgba(245, 158, 11, 0.3);

  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.08);
  --danger-border: rgba(239, 68, 68, 0.3);

  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

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

html { font-size: 15px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--ui);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Header ───────────────────────────────────────────── */
.header {
  border-bottom: 1px solid var(--border);
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 28px;
  height: 28px;
  color: var(--accent-light);
}

.brand-name {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.brand-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.monitor-count {
  font-size: 0.75rem;
  font-family: var(--mono);
  color: var(--good);
  background: var(--good-bg);
  border: 1px solid var(--good-border);
  border-radius: 20px;
  padding: 3px 10px;
  white-space: nowrap;
  cursor: default;
}

.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--bg-card2);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  flex-shrink: 0;
}
.theme-toggle-btn:hover { border-color: var(--accent); color: var(--accent); }

/* ── Main ─────────────────────────────────────────────── */
.main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

/* ── Hero / Form ──────────────────────────────────────── */
.hero {
  text-align: center;
  padding-bottom: 40px;
}

.hero-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.hero-sub {
  color: var(--text-sec);
  font-size: 0.95rem;
  margin-bottom: 28px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.trace-form { width: 100%; }

.form-row {
  display: flex;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-lg);
  padding: 6px;
  box-shadow: var(--shadow);
  transition: border-color 0.2s;
}

.form-row:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow), var(--shadow);
}

.target-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--text);
  padding: 8px 12px;
  min-width: 0;
}

.target-input::placeholder { color: var(--text-muted); }

.cycles-select {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-sec);
  font-family: var(--ui);
  font-size: 0.82rem;
  padding: 6px 10px;
  cursor: pointer;
  outline: none;
  white-space: nowrap;
}

.cycles-select:focus { border-color: var(--accent); }

.trace-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 7px;
  font-family: var(--ui);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px 18px;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  white-space: nowrap;
}

.trace-btn:hover { background: var(--accent-light); }
.trace-btn:active { transform: scale(0.97); }
.trace-btn:disabled { background: var(--border-strong); color: var(--text-muted); cursor: not-allowed; }

.btn-icon { width: 16px; height: 16px; }

/* ── Status bar ──────────────────────────────────────── */
.status-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 14px 18px;
  margin-bottom: 24px;
  font-size: 0.88rem;
  color: var(--text-sec);
}

.status-bar.hidden { display: none; }

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

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

.status-timer { font-family: var(--mono); font-size: 0.82rem; color: var(--text-muted); margin-left: auto; }

/* ── Results ─────────────────────────────────────────── */
.results-area { display: flex; flex-direction: column; gap: 20px; }

/* ── Summary card ─────────────────────────────────────── */
.summary-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.summary-target {
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--text);
  font-weight: 600;
}

.summary-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.meta-item {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.meta-item span {
  color: var(--text-sec);
  font-family: var(--mono);
}

.summary-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin-left: auto;
}

.health-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 20px;
}

.dest-row td {
  border-top: 2px dashed var(--border-strong) !important;
  opacity: 0.75;
}
.dest-row:hover td { opacity: 1; }
.dest-hop { background: var(--muted-bg) !important; color: var(--text-muted) !important; font-size: 0.7rem !important; }

.health-clean { background: var(--good-bg); color: var(--good); border: 1px solid var(--good-border); }
.health-warn  { background: var(--warn-bg);  color: var(--warn);  border: 1px solid var(--warn-border); }
.health-bad   { background: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger-border); }

/* ── Path flow ────────────────────────────────────────── */
.path-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px 24px;
}

.card-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.path-flow {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  font-size: 0.8rem;
}

.path-node {
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 10px;
  cursor: default;
  transition: border-color 0.15s;
}

.path-node:hover { border-color: var(--accent); }

.path-flag { font-size: 1em; }

.path-asn {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-sec);
}

.path-org {
  color: var(--text);
  max-width: 160px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.path-arrow {
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 0 2px;
}

.path-node-local { border-color: var(--accent); }
.path-node-local .path-org { color: var(--accent-light); }

.path-node-blocked {
  opacity: 0.45;
  border-style: dashed;
}

/* ── Hop Table ────────────────────────────────────────── */
.table-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.table-header {
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--border);
}

.table-scroll { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.82rem;
}

thead th {
  text-align: right;
  font-family: var(--ui);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

thead th:first-child,
thead th:nth-child(2),
thead th:nth-child(3) { text-align: left; }

tbody tr { transition: background 0.1s; }
tbody tr:hover { background: var(--bg-hover); }

tbody td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--row-border);
  text-align: right;
  color: var(--text-sec);
  white-space: nowrap;
}

tbody td:first-child { text-align: left; color: var(--text-muted); font-size: 0.78rem; }
tbody td:nth-child(2) { text-align: left; }
tbody td:nth-child(3) { text-align: left; max-width: 220px; }

tbody tr:last-child td { border-bottom: none; }

.hop-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--bg-card2);
  border-radius: 4px;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.ip-cell {
  font-family: var(--mono);
  color: var(--text);
}

.ip-cell.ip-private { color: var(--text-muted); }
.ip-cell.ip-blocked { color: var(--text-muted); opacity: 0.4; }

.geo-cell {
  font-family: var(--ui);
  font-size: 0.78rem;
  color: var(--text-sec);
  display: flex;
  align-items: center;
  gap: 5px;
}

.geo-flag { font-size: 0.9em; }
.geo-city { color: var(--text-sec); }
.geo-org  { color: var(--text-muted); font-size: 0.72rem; }
.as-badge   { font-family: var(--mono); font-size: 0.68rem; color: var(--accent-light); background: var(--accent-glow); border: 1px solid rgba(99,102,241,0.2); border-radius: 3px; padding: 1px 5px; }
.bgp-prefix { font-family: var(--mono); font-size: 0.68rem; color: var(--text-muted); background: var(--muted-bg); border: 1px solid var(--muted-border); border-radius: 3px; padding: 1px 5px; }
.ptr-record { font-size: 0.69rem; color: var(--text-muted); font-style: italic; margin-top: 2px; max-width: 220px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; cursor: default; }

.mtu-btn {
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  color: var(--text-sec);
  font-family: var(--ui);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 5px 12px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  white-space: nowrap;
}
.mtu-btn:hover    { border-color: var(--info); color: var(--info); }
.mtu-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.mtu-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.mtu-header { padding: 14px 20px 12px; border-bottom: 1px solid var(--border); }
.mtu-body   { padding: 4px 0; }
.mtu-ok {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 20px; font-size: 0.84rem; color: var(--good);
}
.mtu-ok svg { flex-shrink: 0; }

/* Metric coloring */
.m-good  { color: var(--good) !important; }
.m-ok    { color: var(--info) !important; }
.m-warn  { color: var(--warn) !important; }
.m-bad   { color: var(--danger) !important; }
.m-muted { color: var(--text-muted) !important; opacity: 0.5; }

.loss-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: 5px;
  vertical-align: middle;
}

/* ── Findings ─────────────────────────────────────────── */
.findings-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.findings-header {
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.findings-count {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 8px;
}

.findings-list { display: flex; flex-direction: column; }

.finding {
  display: flex;
  gap: 14px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--row-border);
  border-left: 3px solid transparent;
  transition: background 0.1s;
}

.finding:last-child { border-bottom: none; }
.finding:hover { background: var(--bg-hover); }

.finding-success { border-left-color: var(--good); }
.finding-info    { border-left-color: var(--info); }
.finding-warning { border-left-color: var(--warn); }
.finding-error   { border-left-color: var(--danger); }

.finding-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 1px;
}

.finding-icon svg { width: 18px; height: 18px; }

.finding-success .finding-icon { color: var(--good); }
.finding-info    .finding-icon { color: var(--info); }
.finding-warning .finding-icon { color: var(--warn); }
.finding-error   .finding-icon { color: var(--danger); }

.finding-body { flex: 1; min-width: 0; }

.finding-hop-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  padding: 1px 7px;
  border-radius: 4px;
  margin-bottom: 4px;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.finding-msg {
  font-size: 0.85rem;
  color: var(--text-sec);
  line-height: 1.5;
}

/* ── Error / Empty ────────────────────────────────────── */
.error-card {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  border-radius: var(--r);
  padding: 16px 20px;
  color: var(--danger);
  font-size: 0.88rem;
  font-family: var(--mono);
}

/* ── Monitor button ───────────────────────────────────── */
.monitor-start-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 7px;
  color: var(--text-sec);
  font-family: var(--ui);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px 16px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  white-space: nowrap;
}
.monitor-start-btn:hover { border-color: var(--good); color: var(--good); }

/* ── Monitor panel ────────────────────────────────────── */
.mon-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.mon-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}

.mon-header-info {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  flex: 1;
  min-width: 0;
}

.mon-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.mon-status {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.mon-status-live    { background: var(--good-bg);   color: var(--good);   border: 1px solid var(--good-border); }
.mon-status-stopped { background: var(--muted-bg);  color: var(--text-muted); border: 1px solid var(--muted-border); }

.live-dot {
  width: 7px; height: 7px;
  background: var(--good);
  border-radius: 50%;
  animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.75); }
}

.mon-target { font-family: var(--mono); font-size: 0.9rem; color: var(--text); }
.mon-runs   { font-size: 0.8rem; color: var(--text-muted); }
.mon-countdown { font-family: var(--mono); font-size: 0.78rem; color: var(--text-muted); background: var(--bg-card2); border: 1px solid var(--border); border-radius: 4px; padding: 2px 8px; }

.mon-stop-btn {
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  border-radius: 6px;
  color: var(--danger);
  font-family: var(--ui);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 5px 14px;
  cursor: pointer;
  transition: background 0.15s;
}
.mon-stop-btn:hover { background: rgba(239,68,68,0.18); }

/* ── Monitor table + sparklines ───────────────────────── */
.mon-table { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 0.82rem; }
.mon-table thead th { text-align: right; font-family: var(--ui); font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); padding: 9px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.mon-table thead th:first-child,
.mon-table thead th:nth-child(2),
.mon-table thead th:nth-child(3),
.mon-table thead th:nth-child(4) { text-align: left; }
.mon-table tbody tr { transition: background 0.1s; }
.mon-table tbody tr:hover { background: var(--bg-hover); }
.mon-table tbody td { padding: 7px 14px; border-bottom: 1px solid rgba(30,42,69,0.5); text-align: right; color: var(--text-sec); white-space: nowrap; vertical-align: middle; }
.mon-table tbody td:first-child { text-align: left; }
.mon-table tbody td:nth-child(2) { text-align: left; }
.mon-table tbody td:nth-child(3) { text-align: left; max-width: 200px; }
.mon-table tbody td:nth-child(4) { text-align: left; }
.mon-table tbody tr:last-child td { border-bottom: none; }

.spark-cell { padding: 4px 14px !important; }

.sparkline {
  display: block;
  width: 140px;
  height: 28px;
  overflow: visible;
}

/* ── Monitor findings ─────────────────────────────────── */
.mon-findings-section {
  border-top: 1px solid var(--border);
}

.mon-findings-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px 10px;
  border-bottom: 1px solid var(--border);
}

.mon-findings-empty {
  padding: 14px 20px;
  font-size: 0.83rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.mon-findings-empty svg { width: 16px; height: 16px; color: var(--good); flex-shrink: 0; }

.finding-source-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 1px 6px;
  border-radius: 3px;
}

.finding-source-run   { background: var(--info-bg);  color: var(--info);  border: 1px solid var(--info-border); }
.finding-source-trend { background: var(--warn-bg);  color: var(--warn);  border: 1px solid var(--warn-border); }

/* ── Share button ─────────────────────────────────────── */
.share-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--bg-card2);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  color: var(--text-sec);
  font-family: var(--ui);
  font-size: 0.8rem;
  padding: 5px 11px;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  white-space: nowrap;
}
.share-btn:hover { border-color: var(--accent); color: var(--accent-light); }

/* ── Utilities ────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 680px) {
  .hero-title { font-size: 1.5rem; }

  .form-row { flex-direction: column; }

  .cycles-select, .trace-btn { width: 100%; }

  .summary-card { flex-direction: column; align-items: flex-start; }
  .summary-actions { margin-left: 0; }

  thead th:nth-child(3),
  tbody td:nth-child(3) { display: none; }
}