:root {
  --bg: #0f172a;
  --panel: #111827;
  --panel-2: #1f2937;
  --border: #334155;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --active: #22c55e;
  --warn: #f59e0b;
  --bad: #ef4444;
  --button: #2563eb;
  --button-hover: #1d4ed8;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

h1, h2, h3, p { margin: 0; }
a { color: inherit; }
.muted { color: var(--muted); }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(6px);
  z-index: 20;
}

.top-actions .link-button,
button {
  background: var(--button);
  color: white;
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 600;
}
button:hover,
.top-actions .link-button:hover { background: var(--button-hover); }
.secondary, .clear-button {
  background: #374151;
}
.secondary:hover, .clear-button:hover {
  background: #4b5563;
}
.link-button {
  text-decoration: none;
  display: inline-block;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
  padding: 18px 22px;
}
.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}
.stat-card .label {
  color: var(--muted);
  font-size: 13px;
}
.stat-card .value {
  margin-top: 6px;
  font-size: 24px;
  font-weight: 700;
}

.main-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr;
  gap: 18px;
  padding: 0 22px 22px;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}
.panel.wide { grid-row: span 2; }
.panel.full { grid-column: 1 / -1; }
.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}

.matrix-wrap {
  overflow: auto;
  max-height: 70vh;
}
.matrix {
  border-collapse: separate;
  border-spacing: 0;
  width: max-content;
  min-width: 100%;
}
.matrix th, .matrix td {
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 0;
  background: var(--panel);
}
.matrix thead th {
  background: #0b1220;
}
.head-cell, .row-head {
  min-width: 160px;
}
.sticky-top {
  position: sticky;
  top: 0;
  z-index: 5;
}
.sticky-col {
  position: sticky;
  left: 0;
  z-index: 4;
}
.sticky-col.sticky-top {
  z-index: 8;
}
.tag-box {
  display: grid;
  gap: 4px;
  padding: 10px;
}
.small-label {
  font-size: 12px;
  color: var(--muted);
}
.tiny-port {
  font-size: 11px;
  color: var(--muted);
}
.tag-input {
  width: 100%;
  min-width: 0;
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 7px 8px;
  background: var(--panel-2);
  color: var(--text);
}

.matrix-cell {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  background: transparent;
  border-radius: 0;
  padding: 0;
}
.matrix-cell:hover {
  background: rgba(37, 99, 235, 0.15);
}
.matrix-cell.active {
  background: rgba(34, 197, 94, 0.16);
}
.matrix-cell.active .dot {
  background: var(--active);
}
.matrix-cell.same-route-reader {
  box-shadow: inset 0 0 0 1px rgba(34, 197, 94, 0.35);
}
.matrix-cell.input-live:not(.active) .dot {
  background: var(--warn);
}
.dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: #475569;
  display: inline-block;
}

.clear-button {
  width: 100%;
  height: 54px;
  border-radius: 0;
}

.status-list {
  display: grid;
  gap: 10px;
  padding: 14px;
  max-height: 35vh;
  overflow: auto;
}
.status-card {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}
.status-top {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}
.status-title {
  font-weight: 700;
}
.pill {
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 12px;
}
.pill.good { background: rgba(34, 197, 94, 0.18); color: #86efac; }
.pill.bad { background: rgba(239, 68, 68, 0.18); color: #fca5a5; }
.meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 12px;
  font-size: 13px;
}
.meta-grid .label { color: var(--muted); }

.log-box {
  max-height: 26vh;
  overflow: auto;
  padding: 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  white-space: pre-wrap;
  display: grid;
  gap: 8px;
}
.log-line {
  background: #0b1220;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card {
  width: min(420px, 100%);
  display: grid;
  gap: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
}
.login-card label {
  display: grid;
  gap: 6px;
}
.login-card input {
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 10px 12px;
  background: var(--panel-2);
  color: var(--text);
}
.error {
  color: #fecaca;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.35);
  border-radius: 10px;
  padding: 10px 12px;
}

.modal.hidden { display: none; }
.modal {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.65);
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 100;
}
.modal-card {
  width: min(520px, 100%);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  display: grid;
  gap: 16px;
}
.modal-actions {
  display: flex;
  justify-content: end;
  gap: 10px;
}

@media (max-width: 1200px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
  .panel.wide {
    grid-row: auto;
  }
}