:root {
  --bg: #0a0c10;
  --panel: #12161e;
  --panel-2: #171b26;
  --panel-3: #1c2230;
  --border: #2a3140;
  --border-strong: #3a4254;
  --gold: #c9a227;
  --cyan: #3dd6f5;
  --green: #16c784;
  --amber: #d6a45d;
  --muted: #8b90a0;
  --text: #e8eaed;
  --danger: #e74c3c;
  --teal: #007d69;
  --header-h: 52px;
  --context-h: 36px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* —— Global chrome (Tk mission-control) —— */
header.app-header {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.75rem 1.25rem;
  min-height: var(--header-h);
  padding: 0.45rem 1rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #0e1218 0%, #0a0c10 100%);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand {
  color: var(--gold);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
}

.pill {
  color: var(--green);
  font-size: 0.72rem;
  font-weight: 700;
  border: 1px solid #1e4d3a;
  background: #0f1f18;
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
}

#global-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.35rem;
  justify-content: center;
}

#global-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 0.35rem 0.65rem;
  border-radius: 6px;
}

#global-nav a.active {
  color: var(--cyan);
  font-weight: 700;
  background: #132029;
  box-shadow: inset 0 -2px 0 var(--cyan);
}

.claims {
  color: #a89070;
  font-size: 0.72rem;
  text-align: right;
  max-width: 220px;
}

.context {
  min-height: var(--context-h);
  display: flex;
  align-items: center;
  padding: 0.4rem 1rem;
  background: var(--panel);
  color: var(--amber);
  font-size: 0.82rem;
  border-bottom: 1px solid var(--border);
}

main.app-main {
  padding: 0.85rem 1rem 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
}

.banner {
  border: 1px solid #3a3428;
  background: #1a1710;
  color: var(--amber);
  border-radius: 8px;
  padding: 0.55rem 0.75rem;
  font-size: 0.82rem;
  margin-bottom: 0.75rem;
}

.banner a { color: var(--cyan); }

.page-title {
  margin: 0 0 0.65rem;
  color: var(--gold);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.muted { color: var(--muted); font-size: 0.88rem; line-height: 1.45; }
.hidden { display: none !important; }
.ok { color: var(--green); }
.err { color: var(--danger); }

/* —— Panels / cards —— */
.panel {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 0.85rem;
}

.panel-title {
  margin: 0 0 0.5rem;
  color: var(--gold);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.panel-grid {
  display: grid;
  gap: 0.65rem;
}

/* —— Trade split (chart + paper pad) —— */
.trade-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.9fr);
  gap: 0.65rem;
  align-items: start;
}

@media (max-width: 960px) {
  .trade-layout { grid-template-columns: 1fr; }
  header.app-header { grid-template-columns: 1fr; }
  .claims { text-align: left; max-width: none; }
}

#trade-chart-panel {
  min-height: 320px;
  display: flex;
  flex-direction: column;
}

.chart-placeholder {
  flex: 1;
  min-height: 260px;
  border: 1px dashed var(--border-strong);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(61, 214, 245, 0.04), transparent 40%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 23px,
      rgba(42, 49, 64, 0.55) 24px
    );
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
  color: var(--muted);
}

.chart-placeholder strong {
  color: var(--cyan);
  display: block;
  margin-bottom: 0.35rem;
}

#trade-paper-pad .pad-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.45rem;
  margin-bottom: 0.45rem;
}

#trade-paper-pad label {
  display: block;
  margin: 0 0 0.2rem;
  color: var(--muted);
  font-size: 0.72rem;
}

#trade-paper-pad input,
#trade-paper-pad select,
#settings input,
#settings select,
#pairing-token {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 0.45rem 0.55rem;
  font-size: 0.88rem;
}

#trade-paper-pad input:disabled,
#trade-paper-pad select:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.mode-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0.35rem 0 0.65rem;
}

.mode-chip {
  border: 1px solid var(--border);
  background: var(--panel-3);
  color: var(--muted);
  border-radius: 999px;
  padding: 0.25rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 700;
}

.mode-chip.on {
  color: var(--cyan);
  border-color: #1a4a58;
  background: #102028;
}

/* —— Session / bridge toolbar —— */
.session-toolbar {
  margin-top: 0.65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  padding: 0.65rem 0.75rem;
}

.session-toolbar summary {
  cursor: pointer;
  color: var(--cyan);
  font-weight: 700;
  font-size: 0.85rem;
}

.session-toolbar .toolbar-body {
  margin-top: 0.65rem;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.45rem;
}

button {
  background: var(--teal);
  color: white;
  border: 0;
  border-radius: 7px;
  padding: 0.5rem 0.8rem;
  font-weight: 700;
  cursor: pointer;
  font-size: 0.85rem;
}

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

button.ghost {
  background: #20242d;
  border: 1px solid var(--border);
}

#bridge-status,
#trial-status,
#performance-disclosures,
#dashboard-body,
#sim-body {
  font-family: Menlo, Monaco, Consolas, monospace;
  font-size: 0.78rem;
  white-space: pre-wrap;
  margin-top: 0.55rem;
  color: var(--muted);
}

/* —— Preflight —— */
.preflight-panel {
  margin-top: 0.65rem;
}

label.ack {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 0.35rem 0;
  color: var(--text);
  font-size: 0.84rem;
}

label.ack input { margin-top: 0.2rem; }

/* —— Performance KPI grid —— */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
  margin-bottom: 0.65rem;
}

@media (max-width: 900px) {
  .kpi-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.kpi-tile {
  background: var(--panel-3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 0.7rem;
  min-height: 78px;
}

.kpi-tile .kpi-label {
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.kpi-tile .kpi-value {
  margin-top: 0.35rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.kpi-tile .kpi-note {
  margin-top: 0.25rem;
  font-size: 0.7rem;
  color: var(--amber);
}

.perf-split {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 0.65rem;
}

@media (max-width: 900px) {
  .perf-split { grid-template-columns: 1fr; }
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.history-table th,
.history-table td {
  border-bottom: 1px solid var(--border);
  padding: 0.4rem 0.35rem;
  text-align: left;
  color: var(--muted);
}

.history-table th {
  color: var(--gold);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* —— Dashboard —— */
.dash-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}

@media (max-width: 900px) {
  .dash-grid { grid-template-columns: 1fr; }
}

.dash-card .dash-metric {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0.35rem 0;
}

/* —— Learn grid —— */
.learn-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
  margin: 0.5rem 0 1rem;
  padding: 0;
  list-style: none;
}

@media (max-width: 900px) {
  .learn-grid { grid-template-columns: 1fr; }
}

.learn-grid li {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  cursor: pointer;
  color: var(--cyan);
  background: var(--panel-3);
  min-height: 72px;
}

.learn-grid li:hover,
.learn-grid li.active {
  border-color: var(--cyan);
}

#learn-article {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem;
  background: var(--panel);
  min-height: 120px;
}

/* —— SIM —— */
.sim-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 0.65rem;
}

@media (max-width: 800px) {
  .sim-layout { grid-template-columns: 1fr; }
}

.sim-calendar {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem;
  background: var(--panel-3);
  color: var(--muted);
  font-size: 0.8rem;
}

.sim-calendar .cal-title {
  color: var(--gold);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.45rem;
}

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.2rem;
  text-align: center;
  font-size: 0.7rem;
}

.cal-grid span {
  padding: 0.25rem 0;
  border-radius: 4px;
  background: #10141c;
}

.cal-grid span.usable {
  color: var(--green);
  border: 1px solid #1e4d3a;
}

/* —— Settings —— */
.settings-sections {
  display: grid;
  gap: 0.65rem;
}

.settings-section label {
  display: block;
  margin: 0.45rem 0 0.2rem;
  color: var(--muted);
  font-size: 0.75rem;
}

footer {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 1rem 2rem;
  color: var(--muted);
  font-size: 0.8rem;
}

footer a { color: var(--cyan); }

/* —— Functional Trade chrome (Tk-closer) —— */
.trade-topbar { margin-bottom: 0.5rem; }
.tf-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  align-items: center;
  margin-top: 0.35rem;
}
.tf-btn {
  background: #1a1f2a;
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 4px;
  padding: 0.2rem 0.45rem;
  font-size: 0.72rem;
  font-weight: 700;
  margin: 0;
  cursor: pointer;
}
.tf-btn.active {
  color: #0b0e13;
  background: var(--cyan);
  border-color: var(--cyan);
}
.tf-status { margin-left: 0.5rem; color: var(--amber); font-size: 0.75rem; }
.chart-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
}
.chart-caption { font-size: 0.75rem; color: var(--muted); margin: 0.4rem 0 0; }
button.small { padding: 0.3rem 0.55rem; font-size: 0.75rem; margin-top: 0; }
.pad-panel .pad-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}
.mode-badge {
  background: #1e4d3a;
  color: var(--green);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}
.side-toggle { display: grid; grid-template-columns: 1fr 1fr; gap: 0.35rem; margin: 0.55rem 0; }
.side-btn {
  margin: 0;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #1a1f2a;
  color: var(--muted);
}
.side-btn.long.active { background: #0d3d2c; color: var(--green); border-color: #1e4d3a; }
.side-btn.short.active { background: #3d1515; color: var(--danger); border-color: #5a2222; }
.btn-row.stack { flex-direction: column; align-items: stretch; }
.btn-row.stack button { margin-right: 0; width: 100%; }
.mono { font-family: Menlo, Monaco, Consolas, monospace; font-size: 0.75rem; white-space: pre-wrap; }
.page-head-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}
.kpi-grid.dense { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.kpi-blocked { color: var(--amber) !important; font-size: 0.95rem !important; }
.learn-ico { display: block; font-size: 1.25rem; margin-bottom: 0.25rem; }
.learn-grid li strong { display: block; color: var(--text); }
.learn-grid li em { display: block; color: var(--muted); font-style: normal; font-size: 0.75rem; margin-top: 0.2rem; }
.learn-article {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem;
  background: var(--panel);
  min-height: 120px;
}
.cal-day {
  padding: 0.35rem 0.2rem;
  border-radius: 4px;
  background: #10141c;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 0.7rem;
  cursor: pointer;
}
.cal-day.usable { color: var(--green); border-color: #1e4d3a; }
.cal-day.selected { background: #132029; color: var(--cyan); border-color: var(--cyan); }
.button-link {
  display: inline-block;
  background: var(--teal);
  color: white !important;
  text-decoration: none;
  border-radius: 7px;
  padding: 0.5rem 0.8rem;
  font-weight: 700;
}
#pad-paper-json { max-height: 120px; overflow: auto; }