:root {
  color-scheme: light;
  --navy: #2c3e50;
  --navy-dark: #223140;
  --line: #d9dee5;
  --line-strong: #b8c0ca;
  --surface: #ffffff;
  --surface-muted: #f5f7fa;
  --text: #1d2733;
  --muted: #647282;
  --good: #18794e;
  --bad: #b42318;
  --warn: #986f0b;
  --focus: #2f6fed;
  --radius: 6px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #eef1f5;
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

button,
input {
  font: inherit;
}

button {
  min-height: 38px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  padding: 0 14px;
}

button:hover {
  border-color: var(--navy);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

button.primary {
  border-color: var(--navy);
  background: var(--navy);
  color: #ffffff;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 8px 10px;
  background: #ffffff;
  color: var(--text);
}

input:focus,
button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus) 30%, transparent);
  outline-offset: 1px;
}

.app-header {
  background: var(--navy);
  color: #ffffff;
}

.header-inner {
  max-width: 1360px;
  min-height: 84px;
  margin: 0 auto;
  padding: 18px 30px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}

.app-header h1 {
  margin: 0;
  font-size: 28px;
  line-height: 1.1;
}

.app-header p {
  margin: 6px 0 0;
  color: #d9e1ea;
  font-size: 14px;
}

.header-status {
  min-width: 108px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius);
  padding: 8px 12px;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
}

.header-status.online {
  background: rgba(24, 121, 78, 0.35);
}

.header-status.error {
  background: rgba(180, 35, 24, 0.35);
}

.shell {
  max-width: 1360px;
  margin: 0 auto;
  padding: 28px 30px 36px;
}

.controls,
.workspace > *,
.metrics article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.controls {
  padding: 22px;
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(520px, 1.2fr);
  gap: 28px;
  align-items: end;
}

h2 {
  margin: 0;
  font-size: 18px;
  line-height: 1.2;
}

.rules {
  margin: 12px 0 0;
  color: #333333;
  font-family: "Courier New", Consolas, monospace;
  font-size: 14px;
  line-height: 1.55;
}

.connection-form {
  display: grid;
  grid-template-columns: minmax(240px, 1.5fr) minmax(180px, 1fr) 120px;
  gap: 14px;
  align-items: end;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.button-row {
  grid-column: 1 / -1;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0;
}

.metrics article,
.detail-grid article {
  padding: 16px;
}

.metrics span,
.detail-grid span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.metrics strong,
.detail-grid strong {
  display: block;
  margin-top: 8px;
  font-size: 26px;
  line-height: 1.1;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(360px, 0.8fr) minmax(600px, 1.4fr);
  gap: 18px;
  align-items: start;
}

.session-panel,
.detail-panel {
  min-width: 0;
  overflow: hidden;
}

.panel-heading {
  min-height: 64px;
  padding: 16px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.panel-heading p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.table-wrap {
  max-height: 620px;
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: middle;
  white-space: nowrap;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--surface-muted);
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
}

tr.session-row {
  cursor: pointer;
}

tr.session-row:hover,
tr.session-row.selected {
  background: #edf4ff;
}

.empty {
  color: var(--muted);
  text-align: center;
  white-space: normal;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-bottom: 1px solid var(--line);
}

.detail-grid article + article {
  border-left: 1px solid var(--line);
}

.log-box {
  min-height: 124px;
  max-height: 180px;
  overflow: auto;
  margin: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #111827;
  color: #d7e0ea;
  padding: 14px;
  font-family: "Courier New", Consolas, monospace;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
}

.trial-table {
  border-top: 1px solid var(--line);
}

.status {
  display: inline-flex;
  min-width: 84px;
  justify-content: center;
  border-radius: 999px;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 700;
}

.status.kept {
  background: #dff5ea;
  color: var(--good);
}

.status.removed {
  background: #ffe6e2;
  color: var(--bad);
}

.status.excluded {
  background: #fff3cf;
  color: var(--warn);
}

@media (max-width: 980px) {
  .controls,
  .workspace {
    grid-template-columns: 1fr;
  }

  .connection-form,
  .metrics,
  .detail-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .header-inner {
    padding: 16px;
    align-items: flex-start;
    flex-direction: column;
  }

  .shell {
    padding: 16px;
  }

  .connection-form,
  .metrics,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .button-row {
    justify-content: stretch;
    flex-direction: column;
  }

  .detail-grid article + article {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}