/* ── Design Tokens ── */
:root {
  --text-xs:   clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem;    --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem;    --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem;   --space-20: 5rem;

  --radius-sm: 0.375rem; --radius-md: 0.5rem;
  --radius-lg: 0.75rem;  --radius-xl: 1rem;
  --radius-full: 9999px;

  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Aurora / tech color theme */
  --color-bg:             #0f1117;
  --color-surface:        #161b27;
  --color-surface-2:      #1b2133;
  --color-surface-offset: #1e2640;
  --color-surface-dynamic:#22304a;
  --color-divider:        #28364f;
  --color-border:         #2e3f5c;

  --color-text:           #e2e8f0;
  --color-text-muted:     #7d9ab8;
  --color-text-faint:     #3a5068;
  --color-text-inverse:   #0f1117;

  /* Aurora teal/cyan accent */
  --color-accent:         #38bdf8;
  --color-accent-hover:   #0ea5e9;
  --color-accent-dim:     #164e63;
  --color-accent-glow:    rgba(56, 189, 248, 0.12);

  /* Semantic */
  --color-success:        #4ade80;
  --color-success-dim:    #14532d;
  --color-warning:        #fbbf24;
  --color-warning-dim:    #451a03;
  --color-error:          #f87171;
  --color-error-dim:      #450a0a;

  --color-prov:           #a78bfa;
  --color-sv2:            #38bdf8;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.45);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);

  --content-wide: 1440px;
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Fira Code', monospace;
}

[data-theme="light"] {
  --color-bg:             #f0f6ff;
  --color-surface:        #ffffff;
  --color-surface-2:      #f8faff;
  --color-surface-offset: #eef4ff;
  --color-surface-dynamic:#e4eeff;
  --color-divider:        #d0dcf5;
  --color-border:         #c0d0eb;
  --color-text:           #0f1a2e;
  --color-text-muted:     #4a6080;
  --color-text-faint:     #8aa0bb;
  --color-text-inverse:   #ffffff;
  --color-accent:         #0284c7;
  --color-accent-hover:   #0369a1;
  --color-accent-dim:     #bae6fd;
  --color-accent-glow:    rgba(2, 132, 199, 0.08);
  --color-success:        #16a34a;
  --color-success-dim:    #dcfce7;
  --color-warning:        #d97706;
  --color-warning-dim:    #fef3c7;
  --color-error:          #dc2626;
  --color-error-dim:      #fee2e2;
  --color-prov:           #7c3aed;
  --color-sv2:            #0284c7;
  --shadow-sm: 0 1px 3px rgba(0,30,80,0.08);
  --shadow-md: 0 4px 16px rgba(0,30,80,0.1);
  --shadow-lg: 0 12px 40px rgba(0,30,80,0.14);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --color-bg:             #f0f6ff;
    --color-surface:        #ffffff;
    --color-surface-2:      #f8faff;
    --color-surface-offset: #eef4ff;
    --color-surface-dynamic:#e4eeff;
    --color-divider:        #d0dcf5;
    --color-border:         #c0d0eb;
    --color-text:           #0f1a2e;
    --color-text-muted:     #4a6080;
    --color-text-faint:     #8aa0bb;
    --color-text-inverse:   #ffffff;
    --color-accent:         #0284c7;
    --color-accent-hover:   #0369a1;
    --color-accent-dim:     #bae6fd;
    --color-accent-glow:    rgba(2, 132, 199, 0.08);
    --color-success:        #16a34a;
    --color-success-dim:    #dcfce7;
    --color-warning:        #d97706;
    --color-warning-dim:    #fef3c7;
    --color-error:          #dc2626;
    --color-error-dim:      #fee2e2;
    --color-prov:           #7c3aed;
    --color-sv2:            #0284c7;
    --shadow-sm: 0 1px 3px rgba(0,30,80,0.08);
    --shadow-md: 0 4px 16px rgba(0,30,80,0.1);
    --shadow-lg: 0 12px 40px rgba(0,30,80,0.14);
  }
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}
body {
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
}
img, svg { display: block; }
button { cursor: pointer; background: none; border: none; color: inherit; font: inherit; }
input, select { font: inherit; color: inherit; }
table { border-collapse: collapse; width: 100%; }
.mono { font-family: var(--font-mono); }

a, button, [role="button"], input, select {
  transition: color var(--transition), background var(--transition),
    border-color var(--transition), box-shadow var(--transition), opacity var(--transition);
}
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ── Header ── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
}
.header-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  text-decoration: none;
}
.logo-text {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.theme-toggle {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.theme-toggle:hover { color: var(--color-text); background: var(--color-surface-offset); }

/* ── Main Layout ── */
.main-layout {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-6);
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: var(--space-6);
  align-items: start;
  min-height: calc(100dvh - 60px);
}
@media (max-width: 900px) {
  .main-layout {
    grid-template-columns: 1fr;
    padding: var(--space-4);
    gap: var(--space-4);
  }
}

/* ── Input Panel ── */
.input-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: sticky;
  top: calc(60px + var(--space-6));
  max-height: calc(100dvh - 80px);
  overflow-y: auto;
  box-shadow: var(--shadow-md);
}
@media (max-width: 900px) {
  .input-panel {
    position: static;
    max-height: none;
    overflow-y: visible;
  }
}
.input-panel::-webkit-scrollbar { width: 4px; }
.input-panel::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 2px; }

.panel-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface-2);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.panel-label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.input-section {
  padding: var(--space-5);
  border-bottom: 1px solid var(--color-divider);
}
.section-title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
}

.field-group { margin-bottom: var(--space-5); }
.field-group:last-child { margin-bottom: 0; }

.field-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.field-hint {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-1);
}

/* Segmented control */
.segmented-control {
  display: flex;
  gap: 2px;
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 3px;
}
.seg-btn {
  flex: 1;
  padding: var(--space-2) var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: calc(var(--radius-md) - 2px);
  color: var(--color-text-muted);
  white-space: nowrap;
  text-align: center;
}
.seg-btn:hover { color: var(--color-text); background: var(--color-surface-dynamic); }
.seg-btn.active {
  background: var(--color-accent);
  color: var(--color-text-inverse);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

/* Range input */
.range-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.range-row input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 5px;
  background: var(--color-surface-offset);
  border-radius: var(--radius-full);
  outline: none;
}
.range-row input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  box-shadow: 0 0 0 3px var(--color-accent-glow);
  transition: box-shadow var(--transition);
}
.range-row input[type="range"]::-webkit-slider-thumb:hover {
  box-shadow: 0 0 0 5px var(--color-accent-glow);
}
.range-val {
  min-width: 70px;
  text-align: right;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-accent);
}

/* Select */
.select-input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  cursor: pointer;
}
.select-input:hover { border-color: var(--color-accent); }

/* Toggle */
.toggle-row { display: flex; align-items: center; gap: var(--space-3); }
.toggle {
  position: relative;
  width: 44px; height: 24px;
  display: inline-block;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition);
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  left: 2px; top: 2px;
  background: var(--color-text-faint);
  border-radius: 50%;
  transition: transform var(--transition), background var(--transition);
}
.toggle input:checked + .toggle-slider { background: var(--color-accent); border-color: var(--color-accent); }
.toggle input:checked + .toggle-slider::before {
  transform: translateX(20px);
  background: var(--color-text-inverse);
}
.toggle-label { font-size: var(--text-xs); color: var(--color-text-muted); }

/* Tooltip */
.tooltip-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  font-size: 10px;
  color: var(--color-text-muted);
  cursor: help;
  line-height: 1;
  flex-shrink: 0;
}
.tooltip-popup {
  position: fixed;
  z-index: 999;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  max-width: 220px;
  box-shadow: var(--shadow-lg);
  pointer-events: none;
  display: none;
  line-height: 1.4;
}

/* Calc button */
.calc-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: calc(100% - var(--space-10));
  margin: var(--space-5);
  padding: var(--space-3) var(--space-5);
  background: var(--color-accent);
  color: var(--color-text-inverse);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-lg);
  box-shadow: 0 0 20px var(--color-accent-glow);
}
.calc-btn:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 0 32px var(--color-accent-glow);
  transform: translateY(-1px);
}
.calc-btn:active { transform: translateY(0); }

/* ── Results Panel ── */
.results-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* Recommendation card */
.recommendation-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.rec-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  width: fit-content;
}
.rec-badge.badge-sv2 { background: var(--color-accent-dim); border-color: var(--color-accent); color: var(--color-accent); }
.rec-badge.badge-prov { background: color-mix(in oklab, var(--color-prov) 15%, transparent); border-color: var(--color-prov); color: var(--color-prov); }
.rec-badge.badge-neutral { background: var(--color-warning-dim); border-color: var(--color-warning); color: var(--color-warning); }
.rec-title {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  line-height: 1.2;
}
.rec-reason {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: none;
}

/* Confidence bar */
.confidence-meter { display: flex; flex-direction: column; gap: var(--space-2); }
.conf-label { display: flex; justify-content: space-between; align-items: center; }
.conf-text { font-size: var(--text-xs); color: var(--color-text-faint); }
.conf-pct { font-size: var(--text-sm); font-weight: 600; color: var(--color-text-muted); }
.conf-bar-bg {
  height: 6px;
  background: var(--color-surface-offset);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.conf-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-success));
  border-radius: var(--radius-full);
  transition: width 600ms cubic-bezier(0.16,1,0.3,1);
}

/* KPI row */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}
@media (max-width: 1100px) { .kpi-row { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .kpi-row { grid-template-columns: 1fr; } }

.kpi-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  box-shadow: var(--shadow-sm);
}
.kpi-card.highlight { border-color: var(--color-sv2); background: color-mix(in oklab, var(--color-sv2) 6%, var(--color-surface)); }
.kpi-card.accent-card { border-color: var(--color-success); background: color-mix(in oklab, var(--color-success) 6%, var(--color-surface)); }
.kpi-card.negative-card { border-color: var(--color-error); background: color-mix(in oklab, var(--color-error) 6%, var(--color-surface)); }
.kpi-label { font-size: var(--text-xs); color: var(--color-text-faint); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.kpi-value { font-size: var(--text-lg); font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.kpi-sub { font-size: var(--text-xs); color: var(--color-text-faint); }

/* Sizing panel */
.sizing-panel, .chart-section, .breakdown-section, .factors-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.sizing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
}
@media (max-width: 700px) { .sizing-grid { grid-template-columns: 1fr; } }

.sizing-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-5);
  border-bottom: 1px solid var(--color-divider);
  border-right: 1px solid var(--color-divider);
}
.sizing-card:nth-child(2n) { border-right: none; }
.sizing-card:nth-last-child(-n+2) { border-bottom: none; }
@media (max-width: 700px) {
  .sizing-card { border-right: none; }
  .sizing-card:last-child { border-bottom: none; }
  .sizing-card:nth-last-child(-n+2) { border-bottom: 1px solid var(--color-divider); }
  .sizing-card:last-child { border-bottom: none; }
}
.sizing-icon {
  width: 36px; height: 36px;
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-accent);
  flex-shrink: 0;
}
.sizing-info { display: flex; flex-direction: column; gap: 2px; }
.sizing-label { font-size: var(--text-xs); color: var(--color-text-faint); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; }
.sizing-val { font-size: var(--text-base); font-weight: 700; color: var(--color-text); font-variant-numeric: tabular-nums; }
.sizing-hint { font-size: var(--text-xs); color: var(--color-text-faint); line-height: 1.3; max-width: none; }

/* Chart */
.chart-container { padding: var(--space-5); min-height: 260px; }
.chart-legend {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}
.legend-item { display: flex; align-items: center; gap: var(--space-2); }
.legend-dot { width: 10px; height: 10px; border-radius: 3px; flex-shrink: 0; }
.legend-text { font-size: var(--text-xs); color: var(--color-text-muted); }

/* Breakdown table */
.breakdown-table { font-size: var(--text-sm); }
.breakdown-table th {
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  border-bottom: 1px solid var(--color-divider);
}
.breakdown-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-divider);
  color: var(--color-text-muted);
  vertical-align: middle;
}
.breakdown-table tr:last-child td { border-bottom: none; }
.breakdown-table tr.total-row td {
  font-weight: 700;
  color: var(--color-text);
  background: var(--color-surface-2);
  border-top: 2px solid var(--color-border);
  font-variant-numeric: tabular-nums;
}
.text-right { text-align: right; }
.empty-row { text-align: center; color: var(--color-text-faint); padding: var(--space-8) !important; }
.diff-positive { color: var(--color-success); font-weight: 600; }
.diff-negative { color: var(--color-error); font-weight: 600; }
.diff-neutral { color: var(--color-text-faint); }
.mono-cell { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* Factors grid */
.factors-grid {
  padding: var(--space-5);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-3);
}
.factor-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-divider);
}
.factor-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 6px;
}
.factor-dot.green { background: var(--color-success); }
.factor-dot.red { background: var(--color-error); }
.factor-dot.yellow { background: var(--color-warning); }
.factor-content { display: flex; flex-direction: column; gap: 2px; }
.factor-title { font-size: var(--text-xs); font-weight: 600; color: var(--color-text); }
.factor-desc { font-size: var(--text-xs); color: var(--color-text-faint); line-height: 1.3; max-width: none; }

/* Footer */
.site-footer {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  border-top: 1px solid var(--color-divider);
  flex-wrap: wrap;
}
.footer-note { font-size: var(--text-xs); color: var(--color-text-faint); max-width: none; }
.footer-credit {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
}
.footer-credit:hover { color: var(--color-accent); }

/* ── DB Metrics section badge ── */
.section-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.section-badge {
  font-size: var(--text-xs);
  font-weight: 500;
  font-family: var(--font-body);
  color: var(--color-text-faint);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 1px var(--space-2);
  letter-spacing: 0;
  text-transform: none;
}

/* ── Derived ACU card ── */
.derived-acu-card {
  background: linear-gradient(135deg,
    color-mix(in oklab, var(--color-accent) 8%, var(--color-surface-offset)),
    var(--color-surface-offset));
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-top: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.derived-acu-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.derived-acu-values {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.derived-main {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}
.derived-val {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.derived-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}
.derived-range {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.derived-range-label { font-weight: 600; }
.derived-breakdown {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.4;
  max-width: none;
  border-top: 1px solid color-mix(in oklab, var(--color-accent) 20%, transparent);
  padding-top: var(--space-2);
  margin-top: var(--space-1);
}

/* ── Override toggle row ── */
.override-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
}
.override-field {
  margin-top: var(--space-3);
  padding: var(--space-3);
  background: var(--color-surface-offset);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
}

/* ── Panel source tag ── */
.panel-source {
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  background: var(--color-accent-dim);
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  letter-spacing: 0.03em;
}

/* ── Instance suggest hint ── */
#instance-suggest-hint {
  color: var(--color-accent);
  font-weight: 500;
}

/* ── CloudWatch metric badge row ── */
.cw-metric-row {
  margin-bottom: var(--space-2);
}
.cw-badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-accent);
  background: var(--color-accent-dim);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-full);
  padding: 2px var(--space-2);
}

/* ── Section description (CloudWatch instructions) ── */
.section-desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-4);
  max-width: none;
}