:root {
  --bg: #0a0e14;
  --bg-elevated: #0d1117;
  --surface: #161b22;
  --surface-hover: #1c2129;
  --border: #30363d;
  --border-subtle: #21262d;
  --text: #e6edf3;
  --muted: #8b949e;
  --green: #3fb950;
  --red: #f85149;
  --blue: #58a6ff;
  --orange: #d29922;
  --purple: #bc8cff;
  --accent: #1f6feb;
  --sidebar-w: 280px;
  --header-h: 64px;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

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

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  font-size: 14px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ── Header ── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0 1.25rem;
  height: var(--header-h);
  border-bottom: 1px solid var(--border);
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(12px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}

.logo { font-size: 1.5rem; line-height: 1; }

h1 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.subtitle {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.1rem;
}

.subtitle strong { color: var(--blue); font-weight: 600; }
.inst-id { color: var(--muted); font-weight: 400; margin-left: 0.2rem; font-size: 0.72rem; }

.header-symbol { flex: 0 0 auto; }

.symbol-select {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  min-width: 160px;
  transition: border-color 0.15s;
}

.symbol-select:hover,
.symbol-select:focus {
  border-color: var(--blue);
  outline: none;
}

.status-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.status-group {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.status-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 600;
}

.badge {
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  white-space: nowrap;
}

.badge-on { background: rgba(63, 185, 80, 0.18); color: var(--green); }
.badge-off { background: rgba(139, 148, 158, 0.12); color: var(--muted); }
.badge-info { background: rgba(88, 166, 255, 0.15); color: var(--blue); }
.badge-warn { background: rgba(210, 153, 34, 0.15); color: var(--orange); }
.badge-danger { background: rgba(248, 81, 73, 0.18); color: var(--red); }
.badge-accent { background: rgba(31, 111, 235, 0.2); color: var(--blue); }

/* ── Layout ── */
.layout {
  display: flex;
  min-height: calc(100vh - var(--header-h));
  max-width: 1920px;
  margin: 0 auto;
}

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  padding: 1rem 0.75rem 1.5rem;
  border-right: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
  overflow-y: auto;
  max-height: calc(100vh - var(--header-h));
  position: sticky;
  top: var(--header-h);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.main-content {
  flex: 1;
  min-width: 0;
  padding: 1rem 1.25rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
}

.sidebar-card { box-shadow: none; padding: 0.85rem 1rem; }

.card-title {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.card h2.card-title { font-size: 0.72rem; margin-bottom: 0.75rem; }

/* ── KPI Row ── */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.kpi-card { display: flex; flex-direction: column; }

.kpi-hero {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.85rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-subtle);
}

.kpi-main .kpi-label,
.kpi-sub .kpi-label,
.signal-highlight .kpi-label {
  display: block;
  font-size: 0.68rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.15rem;
}

.kpi-value {
  font-size: 1.75rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--text);
}

.kpi-sub {
  display: flex;
  gap: 1.25rem;
  text-align: right;
  font-size: 0.95rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.signal-highlight {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* ── Metrics ── */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.metric-grid-compact {
  grid-template-columns: repeat(2, 1fr);
  gap: 0.45rem;
}

.metric, .sig-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 0.45rem 0.6rem;
}

.metric label, .sig-item label {
  display: block;
  font-size: 0.65rem;
  color: var(--muted);
  margin-bottom: 0.1rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.metric span, .sig-item span {
  font-size: 0.92rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.section-hint {
  font-size: 0.72rem;
  color: var(--muted);
  margin: -0.35rem 0 0.65rem;
  line-height: 1.4;
}

.gate-compare {
  margin-top: 0.65rem;
  padding-top: 0.65rem;
  border-top: 1px dashed var(--border);
}

.gate-compare .metric label::after {
  content: ' · 门禁';
  font-size: 0.62rem;
  color: var(--muted);
  text-transform: none;
}

/* ── Signal ── */
.signal-panel { /* full width in main */ }

.signal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.5rem;
}

.regime {
  font-size: 0.65rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-weight: 700;
  vertical-align: middle;
  letter-spacing: 0.04em;
}

.regime.flush_short { background: rgba(248, 81, 73, 0.3); color: var(--red); }
.regime.flush { background: rgba(210, 153, 34, 0.2); color: var(--orange); }
.regime.accumulation { background: rgba(63, 185, 80, 0.2); color: var(--green); }
.regime.idle { background: rgba(139, 148, 158, 0.15); color: var(--muted); }

.pipeline {
  display: flex;
  align-items: stretch;
  gap: 0.35rem;
}

.pipeline-compact .pipeline-step {
  flex: 1;
  min-width: 0;
  padding: 0.35rem 0.25rem;
}

.pipeline-step {
  flex: 1;
  min-width: 70px;
  padding: 0.4rem 0.35rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  text-align: center;
  opacity: 0.45;
  background: var(--bg-elevated);
  transition: opacity 0.2s, border-color 0.2s;
}

.pipeline-step.on {
  opacity: 1;
  border-color: var(--green);
  background: rgba(63, 185, 80, 0.08);
}

.pipeline-step.final.on.danger {
  border-color: var(--red);
  background: rgba(248, 81, 73, 0.1);
}

.step-label {
  display: block;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--muted);
}

.step-val {
  display: block;
  font-size: 0.65rem;
  color: var(--text);
  margin-top: 0.1rem;
  font-variant-numeric: tabular-nums;
  word-break: break-all;
}

/* ── Charts ── */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.chart-wrap {
  position: relative;
  height: 220px;
}

.chart-wrap-tall { height: 280px; }

.chart-wrap canvas {
  width: 100% !important;
  height: 100% !important;
}

.chart-empty, .empty-hint {
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
  padding: 2rem 1rem;
}

/* ── Bottom row ── */
.bottom-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1rem;
}

.table-wrap {
  overflow-x: auto;
  max-height: 240px;
  overflow-y: auto;
}

table { width: 100%; border-collapse: collapse; font-size: 0.78rem; }

th, td {
  padding: 0.45rem 0.55rem;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  position: sticky;
  top: 0;
  background: var(--surface);
}

td.buy, td.cover { color: var(--green); }
td.sell { color: var(--orange); }
td.short { color: var(--red); }

.log-container {
  max-height: 240px;
  overflow-y: auto;
  font-family: "SF Mono", "Fira Code", Monaco, monospace;
  font-size: 0.72rem;
  line-height: 1.6;
}

.log-entry {
  padding: 0.25rem 0;
  border-bottom: 1px solid rgba(48, 54, 61, 0.4);
}

.log-entry.error { color: var(--red); }
.log-entry.warn { color: var(--orange); }
.log-entry.trade { color: var(--blue); }

/* ── Sidebar controls ── */
.btn {
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-elevated);
  color: var(--text);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 500;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.btn:hover { background: var(--surface-hover); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-sm { padding: 0.35rem 0.6rem; font-size: 0.75rem; }
.btn-block { width: 100%; margin-top: 0.4rem; }

.btn-green { border-color: rgba(63, 185, 80, 0.4); color: var(--green); background: rgba(63, 185, 80, 0.08); }
.btn-red { border-color: rgba(248, 81, 73, 0.4); color: var(--red); background: rgba(248, 81, 73, 0.08); }
.btn-blue { border-color: rgba(88, 166, 255, 0.4); color: var(--blue); background: rgba(88, 166, 255, 0.08); }
.btn-orange { border-color: rgba(210, 153, 34, 0.4); color: var(--orange); background: rgba(210, 153, 34, 0.08); }
.btn-purple { border-color: rgba(188, 140, 255, 0.4); color: var(--purple); background: rgba(188, 140, 255, 0.08); }
.btn-gray { color: var(--muted); }

.btn-group-col { display: flex; flex-direction: column; gap: 0.45rem; }
.btn-row { display: flex; gap: 0.4rem; }
.btn-row .btn { flex: 1; padding-left: 0.35rem; padding-right: 0.35rem; font-size: 0.78rem; }

.mode-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
  margin-bottom: 0.5rem;
}

.btn-mode {
  font-weight: 700;
  letter-spacing: 0.05em;
  font-size: 0.78rem;
}

.gate-status, .save-status {
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.45;
  margin-top: 0.5rem;
  display: block;
}

/* ── Risk ── */
.risk-action {
  font-size: 1rem;
  font-weight: 700;
  padding: 0.55rem;
  border-radius: 8px;
  text-align: center;
  margin-bottom: 0.35rem;
  letter-spacing: 0.04em;
}

.risk-action.allow { background: rgba(63, 185, 80, 0.12); color: var(--green); }
.risk-action.block, .risk-action.halt { background: rgba(248, 81, 73, 0.12); color: var(--red); }
.risk-action.reduce { background: rgba(210, 153, 34, 0.12); color: var(--orange); }

.risk-reason { font-size: 0.78rem; color: var(--muted); margin-bottom: 0.5rem; line-height: 1.4; }

.risk-checks { display: flex; flex-wrap: wrap; gap: 0.3rem; }

.risk-check-item {
  font-size: 0.68rem;
  background: var(--bg-elevated);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  color: var(--muted);
  border: 1px solid var(--border-subtle);
}

.risk-check-item em { font-style: normal; color: var(--text); margin-right: 0.15rem; }

/* ── Settings ── */
.settings-card details { margin-top: 0.35rem; border-top: 1px solid var(--border-subtle); padding-top: 0.35rem; }
.settings-card details:first-of-type { border-top: none; padding-top: 0; }
.settings-card details summary {
  cursor: pointer;
  padding: 0.35rem 0;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text);
  user-select: none;
}

.settings-card details summary:hover { color: var(--blue); }

.param-form-stack {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-top: 0.45rem;
  margin-bottom: 0.35rem;
}

.param-form-stack label {
  font-size: 0.72rem;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.checkbox-row {
  flex-direction: row !important;
  align-items: center;
  gap: 0.45rem !important;
  color: var(--text) !important;
}

.param-form input,
.param-form select {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 0.4rem 0.55rem;
  font-size: 0.82rem;
  width: 100%;
}

.param-form input:focus,
.param-form select:focus {
  border-color: var(--blue);
  outline: none;
}

.sidebar-dev {
  padding: 0.65rem;
  border: 1px dashed var(--orange);
  border-radius: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

.dev-label { font-size: 0.68rem; color: var(--orange); font-weight: 600; width: 100%; }

.optimize-list { margin-top: 0.5rem; display: flex; flex-direction: column; gap: 0.35rem; }
.optimize-item {
  font-size: 0.68rem;
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  line-height: 1.35;
}
.optimize-item.ok { border-color: rgba(63, 185, 80, 0.35); }
.optimize-item.fail { border-color: rgba(248, 81, 73, 0.25); opacity: 0.85; }
.optimize-item .sym { font-weight: 700; color: var(--text); }

.positive { color: var(--green); }
.negative { color: var(--red); }

/* ── Responsive ── */
@media (max-width: 1200px) {
  .kpi-row { grid-template-columns: 1fr 1fr; }
  .kpi-row .signal-summary { grid-column: 1 / -1; }
}

@media (max-width: 960px) {
  .layout { flex-direction: column; }

  .sidebar {
    width: 100%;
    max-height: none;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--border);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 0.75rem;
    padding: 0.75rem;
  }

  .settings-card { grid-column: 1 / -1; }

  .header {
    flex-wrap: wrap;
    height: auto;
    padding: 0.75rem 1rem;
    gap: 0.65rem;
  }

  .status-bar { margin-left: 0; width: 100%; justify-content: flex-start; }
}

@media (max-width: 768px) {
  .kpi-row,
  .charts-grid,
  .bottom-row { grid-template-columns: 1fr; }

  .kpi-hero { flex-direction: column; align-items: flex-start; }
  .kpi-sub { text-align: left; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .status-group .status-label { display: none; }
  .btn-row { flex-wrap: wrap; }
}