:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --panel2: #f1f5f9;
  --line: #d8dee8;
  --line2: #c8d2df;
  --text: #102033;
  --muted: #667085;
  --navy: #002060;
  --blue: #0070c0;
  --red: #c00000;
  --green: #137333;
  --gold: #9a6b18;
  --ink2: #27364a;
  --shadow: 0 8px 24px rgba(16, 32, 51, .08);
  font-family: Calibri, "Segoe UI", "IBM Plex Sans Arabic", Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

button, input, textarea, select {
  font: inherit;
}

button {
  cursor: pointer;
}

.shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
}

.rail {
  background: #0f172a;
  color: #fff;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #fff;
  color: var(--navy);
  font-weight: 900;
}

.brand h1 {
  margin: 0;
  font-size: 19px;
  line-height: 1.05;
  color: #fff;
}

.brand p {
  margin: 2px 0 0;
  color: #94a3b8;
  font-size: 12px;
}

.nav {
  display: grid;
  gap: 8px;
}

.nav-btn {
  border: 1px solid rgba(255, 255, 255, .12);
  background: transparent;
  color: #cbd5e1;
  border-radius: 8px;
  padding: 10px 12px;
  text-align: left;
  font-weight: 800;
}

.nav-btn:hover, .nav-btn.on {
  background: rgba(0, 112, 192, .22);
  color: #fff;
}

.rail-status {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 8px;
  padding: 10px;
  color: #cbd5e1;
  font-size: 12px;
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--gold);
  flex: 0 0 auto;
}

.dot.ok { background: var(--green); }
.dot.bad { background: var(--red); }

.workspace {
  min-width: 0;
  padding: 22px;
}

.page-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: 12px;
  font-weight: 900;
}

h2, h3 {
  margin: 0;
  color: var(--navy);
}

h2 {
  font-size: 28px;
  line-height: 1.1;
}

h3 {
  font-size: 17px;
}

.head-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ghost-link, .action-btn, .primary, .small-btn, .command-actions button {
  border: 1px solid var(--line2);
  background: #fff;
  color: var(--ink2);
  border-radius: 8px;
  padding: 9px 12px;
  text-decoration: none;
  font-weight: 800;
  box-shadow: 0 1px 2px rgba(16,32,51,.05);
}

.primary {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}

.small-btn {
  padding: 6px 10px;
  font-size: 13px;
}

.view { display: none; }
.view.on { display: block; }

.command-panel, .panel, .metric {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.command-panel {
  padding: 16px;
  margin-bottom: 16px;
}

.command-top {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}

.command-top p {
  margin: 4px 0 0;
  color: var(--muted);
}

select, input, textarea {
  border: 1px solid var(--line2);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  padding: 10px;
  min-width: 0;
}

textarea {
  width: 100%;
  resize: vertical;
  min-height: 150px;
}

#skillSelect {
  width: min(460px, 100%);
}

.command-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
}

.muted {
  color: var(--muted);
  font-size: 13px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.metric {
  padding: 14px;
}

.metric label {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-size: 11px;
  font-weight: 900;
}

.metric strong {
  display: block;
  color: var(--navy);
  font-size: 25px;
  line-height: 1.1;
  margin: 6px 0 3px;
}

.metric small {
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr);
  gap: 16px;
}

.panel {
  padding: 16px;
  min-width: 0;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.chip {
  border: 1px solid rgba(0,112,192,.22);
  background: rgba(0,112,192,.07);
  color: var(--blue);
  border-radius: 8px;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 900;
}

.output-box {
  min-height: 310px;
  max-height: 540px;
  overflow: auto;
  white-space: pre-wrap;
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  color: #1e293b;
}

.trace-list, .provider-list, .list-table, .skill-grid {
  display: grid;
  gap: 8px;
}

.trace-item, .provider-item, .row-item, .skill-card, .bridge-summary {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px;
  background: #fff;
  min-width: 0;
  overflow-wrap: anywhere;
}

.trace-item b, .row-item b, .skill-card b, .bridge-summary b {
  color: var(--navy);
}

.trace-item span, .row-item span, .skill-card span, .provider-item span, .bridge-summary span {
  color: var(--muted);
  display: block;
  margin-top: 3px;
  font-size: 13px;
}

.bridge-summary {
  margin-top: 10px;
}

.skill-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.quick-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 180px 130px;
  gap: 8px;
  margin-bottom: 12px;
}

.decision-form {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.settings-grid {
  display: grid;
  gap: 10px;
}

.settings-grid label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.settings-grid .check {
  grid-template-columns: auto 1fr;
  align-items: center;
  color: var(--text);
}

.provider-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.provider-item strong {
  color: var(--navy);
}

.provider-item .configured {
  color: var(--green);
  font-weight: 900;
}

.provider-item .missing {
  color: var(--muted);
  font-weight: 900;
}

@media (max-width: 1080px) {
  .shell { grid-template-columns: 1fr; }
  .rail { position: static; }
  .metrics, .split, .skill-grid, .quick-form, .decision-form { grid-template-columns: 1fr; }
  .page-head, .command-top { align-items: flex-start; flex-direction: column; }
  #skillSelect { width: 100%; }
}