:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel-2: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #60a5fa;
  --accent-dim: #2a4365;
  --border: #334155;
  --ok: #4ade80;
  --bad: #f87171;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--accent); }

code {
  background: rgba(148, 163, 184, 0.12);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.topbar {
  background: #0b1220;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
}
.brand-title { font-size: 15px; font-weight: 600; }
.brand-sub   { font-size: 11px; color: var(--muted); }

.tabs { display: flex; gap: 4px; }
.tab {
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
}
.tab:hover { background: rgba(148, 163, 184, 0.1); color: var(--text); }
.tab.active {
  background: var(--accent-dim);
  color: var(--text);
  font-weight: 500;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel {
  background: var(--panel);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 16px;
}
.panel-head h1 { margin: 0 0 4px 0; font-size: 20px; font-weight: 600; }
.panel-head .subtitle { color: var(--muted); font-size: 13px; }
.panel h3 { margin: 16px 0 6px 0; font-size: 14px; font-weight: 600; }
.panel h3:first-child { margin-top: 0; }
.panel p { font-size: 13px; color: #cbd5e1; margin: 6px 0; }
.panel ul.notes { font-size: 12.5px; color: #cbd5e1; margin: 6px 0; padding-left: 20px; }
.panel ul.notes li { margin: 4px 0; }

.section-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 8px;
}

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

.btn {
  background: var(--accent);
  color: #0b1220;
  border: none;
  border-radius: 6px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.btn:hover { background: #7dbafb; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ============ CHIPS ============ */
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  background: var(--panel-2);
  border: 1px solid transparent;
  border-radius: 20px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s;
  user-select: none;
}
.chip:hover { background: #475569; }
.chip.active {
  background: var(--accent);
  color: #0b1220;
  border-color: var(--accent);
  font-weight: 600;
}
.chip.on {
  background: #4b6180;
  border-color: #cbd5e1;
  color: #f8fafc;
  box-shadow: inset 0 0 0 1px rgba(226, 232, 240, 0.5);
}
.chip.on:hover { background: #56708f; }
.chip.inactive { opacity: 0.35; }
.chip.inactive.on { opacity: 1; }
.chip-preview {
  display: inline-block;
  width: 26px; height: 10px;
}
.chip-preview svg { display: block; }

/* ============ CHART ============ */
.chart-wrap { position: relative; }
svg#chart { display: block; width: 100%; height: auto; }
.tooltip {
  position: absolute;
  background: #0b1220;
  border: 1px solid #475569;
  border-radius: 6px;
  padding: 12px 14px;
  pointer-events: none;
  font-size: 12px;
  line-height: 1.5;
  opacity: 0;
  transition: opacity 0.15s;
  min-width: 340px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  z-index: 10;
}
.tooltip .tt-title { font-weight: 600; margin-bottom: 4px; color: var(--accent); }
.tooltip .tt-sub   { font-size: 10.5px; color: var(--muted); margin-bottom: 10px; }
.tooltip .tt-grid {
  display: grid;
  gap: 3px 10px;
  font-size: 11px;
  align-items: baseline;
}
.tooltip .tt-head {
  font-size: 9.5px;
  text-transform: uppercase;
  color: var(--muted);
  letter-spacing: 0.05em;
  padding-bottom: 2px;
  border-bottom: 1px solid #334155;
  margin-bottom: 2px;
}
.tooltip .tt-sw { width: 14px; height: 2px; display: inline-block; }
.tooltip .tt-name { white-space: nowrap; }
.tooltip .tt-val  { color: var(--text); text-align: right; font-variant-numeric: tabular-nums; }
.tooltip .tt-delta { text-align: right; font-variant-numeric: tabular-nums; font-size: 10.5px; }
.delta-up { color: var(--ok); }
.delta-dn { color: var(--bad); }
.delta-flat { color: var(--muted); }

.legend-note {
  font-size: 11px;
  color: var(--muted);
  margin-top: 8px;
}
.footer {
  font-size: 11px;
  color: var(--muted);
  margin-top: 10px;
  line-height: 1.5;
}

/* ============ LIVE GRID ============ */
.live-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}
.live-card {
  background: #0b1220;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
}
.live-card .live-label {
  font-size: 11px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.live-card .live-idx {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 8px;
}
.live-card .live-val {
  font-size: 20px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  margin-bottom: 4px;
}
.live-card .live-meta {
  font-size: 11px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 6px;
  font-variant-numeric: tabular-nums;
}
.live-card.err { border-color: #7f1d1d; }
.live-card.err .live-val { color: var(--bad); font-size: 13px; font-weight: 500; }

/* ============ FLOW SNAPSHOT ============ */
.snapshot-note {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 12px;
}
.snapshot-table-wrap {
  overflow-x: auto;
}
.snapshot-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.snapshot-table th,
.snapshot-table td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  font-variant-numeric: tabular-nums;
}
.snapshot-table th {
  background: #0b1220;
  white-space: nowrap;
}
.snapshot-total td {
  background: rgba(148, 163, 184, 0.08);
}

/* ============ BRIEF ============ */
.brief-body {
  font-size: 14px;
  line-height: 1.6;
  color: #e2e8f0;
}
.brief-body h1, .brief-body h2, .brief-body h3 { color: #f8fafc; margin-top: 20px; }
.brief-body h1 { font-size: 18px; }
.brief-body h2 { font-size: 16px; }
.brief-body h3 { font-size: 14px; }
.brief-body p  { margin: 8px 0; }
.brief-body ul, .brief-body ol { padding-left: 22px; }
.brief-body li { margin: 4px 0; }
.brief-body blockquote {
  border-left: 3px solid var(--accent-dim);
  padding-left: 12px;
  margin: 10px 0;
  color: var(--muted);
}
.brief-body table {
  border-collapse: collapse;
  margin: 10px 0;
  font-size: 13px;
}
.brief-body th, .brief-body td {
  border: 1px solid var(--border);
  padding: 6px 10px;
  text-align: left;
}
.brief-body th { background: #0b1220; }

.brief-history {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 13px;
}
.brief-history li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.brief-history li:last-child { border-bottom: none; }
.brief-history a { text-decoration: none; }
.brief-history a:hover { text-decoration: underline; }

/* ============ GENERATE BRIEF ============ */
.btn-generate {
  background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 100%);
  color: #0b1220;
  font-weight: 700;
  padding: 9px 18px;
  font-size: 13px;
}
.btn-generate:hover { filter: brightness(1.08); }
.btn-generate:disabled { opacity: 0.5; cursor: not-allowed; filter: none; }

.generate-status {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.generate-status.error { color: var(--bad); }
.generate-status.ok    { color: var(--ok); }
#flow-refresh-status.error { color: var(--bad); }
#flow-refresh-status.ok    { color: var(--ok); }

.spinner {
  width: 14px; height: 14px;
  border: 2px solid rgba(148,163,184,0.3);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============ SETTINGS ============ */
.settings-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 14px;
}
.settings-label {
  font-size: 13px;
  color: var(--muted);
  min-width: 130px;
  flex-shrink: 0;
}
.settings-select {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  min-width: 240px;
}
.settings-select:focus { outline: 2px solid var(--accent); }

.seg-control {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.seg-btn {
  background: var(--panel-2);
  border: none;
  color: var(--muted);
  padding: 7px 16px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s;
  border-right: 1px solid var(--border);
}
.seg-btn:last-child { border-right: none; }
.seg-btn:hover { background: #475569; color: var(--text); }
.seg-btn.active { background: var(--accent-dim); color: var(--text); font-weight: 600; }

.key-input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.settings-input {
  flex: 1;
  background: #0b1220;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.settings-input:focus { outline: 2px solid var(--accent); border-color: transparent; }

.btn-sm {
  padding: 7px 12px;
  font-size: 12px;
  white-space: nowrap;
}
.btn-danger {
  background: #7f1d1d;
  color: #fca5a5;
}
.btn-danger:hover { background: #991b1b; }

.settings-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.key-status {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 20px;
}
.key-status.saved { background: rgba(74,222,128,0.12); color: var(--ok); }
.key-status.unset { background: rgba(148,163,184,0.1); color: var(--muted); }

/* ============ TOGGLE SWITCH ============ */
.toggle-wrap {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}
.toggle-wrap input[type="checkbox"] { display: none; }
.toggle-track {
  position: relative;
  width: 40px;
  height: 22px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 11px;
  transition: background 0.2s, border-color 0.2s;
  flex-shrink: 0;
}
.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: var(--muted);
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,0.4);
}
.toggle-wrap input:checked ~ .toggle-track,
.toggle-wrap input:checked + .toggle-track {
  background: var(--accent);
  border-color: var(--accent);
}
.toggle-wrap input:checked ~ .toggle-track .toggle-thumb,
.toggle-wrap input:checked + .toggle-track .toggle-thumb {
  transform: translateX(18px);
  background: #fff;
}
.toggle-label { font-size: 13px; color: var(--text); }

/* ============ FOOTER ============ */
.page-footer {
  max-width: 1200px;
  margin: 24px auto 32px;
  padding: 0 24px;
  font-size: 11px;
  text-align: center;
}

@media (max-width: 640px) {
  .topbar-inner { flex-direction: column; align-items: flex-start; }
  .tabs { width: 100%; overflow-x: auto; }
  .container { padding: 16px; }
  .panel { padding: 16px; }
}