/* ── Reset & Base ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-800: #1e40af;
  --blue-900: #1e3a5f;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --green-600: #16a34a;
  --green-50: #f0fdf4;
  --red-500: #ef4444;
  --amber-500: #f59e0b;
  --amber-50: #fffbeb;
  --radius: 8px;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--gray-100);
  color: var(--gray-800);
  line-height: 1.5;
  display: flex;
  flex-direction: column;
}

/* ── Header / Top Bar ── */
header {
  background: linear-gradient(135deg, var(--blue-900), var(--blue-800));
  color: white;
  padding: 0.5rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-shrink: 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.header-left {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-shrink: 0;
}

header h1 {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tagline {
  color: var(--blue-100);
  font-size: 0.8rem;
  opacity: 0.8;
}

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

.header-control {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.header-control label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--blue-100);
  opacity: 0.7;
  white-space: nowrap;
}

.header-slider {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.header-slider input[type="range"] {
  width: 80px;
  accent-color: var(--blue-500);
  height: 4px;
}

.header-slider span {
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
}

.header-control select {
  padding: 0.25rem 0.5rem;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 4px;
  font-size: 0.78rem;
  color: white;
  background: rgba(255,255,255,0.1);
  cursor: pointer;
}

.header-control select option {
  color: var(--gray-800);
  background: white;
}

.header-btn {
  padding: 0.3rem 0.7rem;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 4px;
  background: rgba(255,255,255,0.1);
  color: white;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
}

.header-btn:hover {
  background: rgba(255,255,255,0.2);
}

.header-link {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ── KPI Bar ── */
.kpi-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0;
  flex-shrink: 0;
}

.kpi {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 0.4rem 0.75rem;
  text-align: center;
  flex: 1;
  min-width: 0;
}

.kpi-highlight {
  background: var(--blue-50);
  border-color: var(--blue-500);
}

.kpi-label {
  display: block;
  font-size: 0.65rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.kpi-value {
  display: block;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-800);
  white-space: nowrap;
}

.kpi-highlight .kpi-value {
  color: var(--blue-700);
}

/* ── Board Summary ── */
.board-summary {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
  margin-bottom: 0.5rem;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--gray-700);
  flex-shrink: 0;
}

.board-summary-placeholder {
  color: var(--gray-400);
  font-size: 0.65rem;
}

.board-summary-heading {
  text-decoration: underline;
  text-underline-offset: 2px;
  margin-right: 0.3rem;
}

.board-summary.hidden {
  display: none;
}

/* ── Dashboard Layout ── */
.dashboard {
  flex: 1;
  padding: 0 0.75rem 0.5rem;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.grid-main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  min-height: 0;
  overflow: hidden;
}

.grid-left {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 0;
  overflow: hidden;
}

.grid-right {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-height: 0;
  overflow: hidden;
}

/* ── Panels ── */
.panel {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.panel h2 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.4rem;
  flex-shrink: 0;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.panel-hint {
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--gray-400);
}

/* ── Scenarios Grid (compact) ── */
#scenarios-section {
  flex: 0 0 auto;
}

.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.4rem;
}

.scenario-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  padding: 0.4rem 0.5rem;
  text-align: center;
}

.scenario-card .scenario-icon {
  font-size: 1rem;
  line-height: 1;
}

.scenario-card .scenario-name {
  font-weight: 600;
  font-size: 0.65rem;
  color: var(--gray-700);
  line-height: 1.2;
  margin-top: 0.15rem;
}

.scenario-card .scenario-desc {
  font-size: 0.5rem;
  color: var(--gray-400);
  line-height: 1.3;
  margin-top: 0.1rem;
}

.scenario-card .scenario-impact {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--red-500);
  margin-top: 0.1rem;
}

.scenario-card .scenario-freq {
  font-size: 0.6rem;
  color: var(--gray-400);
}

.scenario-card .scenario-ale {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--amber-500);
  margin-top: 0.2rem;
  padding-top: 0.2rem;
  border-top: 1px solid var(--gray-200);
}

.scenario-card .scenario-ale-label {
  font-size: 0.55rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* ── Controls Header ── */
.controls-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  margin-bottom: 0.4rem;
  gap: 0.5rem;
}

.controls-header h2 {
  margin-bottom: 0;
}

.controls-actions {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.custom-cost-input {
  width: 70px;
  font-size: 0.65rem;
  padding: 0.1rem 0.25rem;
  border: 1px solid var(--gray-300);
  border-radius: 3px;
  background: white;
  color: var(--gray-700);
  font-weight: 600;
}

.custom-cost-input:focus {
  outline: none;
  border-color: var(--blue-500);
}

.cost-multiplier {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  font-size: 0.65rem;
  color: var(--gray-500);
}

.cost-multiplier label {
  font-weight: 600;
}

.cost-multiplier input[type="range"] {
  width: 50px;
  height: 4px;
}

.cost-multiplier span {
  font-weight: 600;
  min-width: 1.5rem;
  color: var(--gray-700);
}

.stack-buttons {
  display: flex;
  gap: 0.2rem;
}

.stack-btn {
  padding: 0.15rem 0.45rem;
  border: 1px solid var(--gray-300);
  border-radius: 4px;
  background: white;
  color: var(--gray-600);
  font-size: 0.6rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.12s;
  white-space: nowrap;
}

.stack-btn:hover {
  border-color: var(--blue-500);
  color: var(--blue-700);
  background: var(--blue-50);
}

.stack-btn.active {
  border-color: var(--blue-600);
  background: var(--blue-600);
  color: white;
}

.action-btn {
  padding: 0.15rem 0.45rem;
  border: 1px solid var(--gray-300);
  border-radius: 4px;
  background: white;
  color: var(--gray-500);
  font-size: 0.6rem;
  cursor: pointer;
  transition: all 0.12s;
  white-space: nowrap;
}

.action-btn:hover {
  border-color: var(--gray-400);
  color: var(--gray-700);
}

.action-btn.active {
  background: var(--blue-500);
  color: white;
  border-color: var(--blue-500);
}

/* ── Controls Grid (compact) ── */
#controls-section {
  flex: 1;
  min-height: 0;
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.35rem;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.control-card {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  padding: 0.45rem 0.55rem;
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
  position: relative;
}

.control-card:hover {
  border-color: var(--blue-500);
  background: var(--blue-50);
}

.control-card.selected {
  border-color: var(--blue-600);
  background: var(--blue-50);
  box-shadow: inset 3px 0 0 var(--blue-600);
}

.control-card input[type="checkbox"] {
  margin-top: 0.1rem;
  accent-color: var(--blue-600);
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.control-info {
  flex: 1;
  min-width: 0;
}

.control-name {
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--gray-800);
}

.best-value-badge {
  display: inline-block;
  background: var(--green-500);
  color: white;
  font-size: 0.5rem;
  font-weight: 700;
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
  margin-left: 0.4rem;
  vertical-align: middle;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.control-desc {
  font-size: 0.65rem;
  color: var(--gray-500);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.control-meta {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.2rem;
  font-size: 0.65rem;
}

.control-cost {
  color: var(--blue-700);
  font-weight: 600;
}

.control-effectiveness {
  color: var(--green-600);
  font-weight: 500;
}

/* ── Tooltip ── */
.control-tooltip {
  position: fixed;
  z-index: 100;
  background: var(--gray-800);
  color: white;
  border-radius: 6px;
  padding: 0.5rem 0.65rem;
  font-size: 0.7rem;
  line-height: 1.5;
  max-width: 280px;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.control-tooltip.hidden {
  display: none;
}

.control-tooltip .tt-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
  font-size: 0.75rem;
}

.control-tooltip .tt-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.control-tooltip .tt-scenario {
  color: var(--gray-300);
}

.control-tooltip .tt-pct {
  font-weight: 600;
  color: var(--green-600);
}

.control-tooltip .tt-pct.zero {
  color: var(--gray-500);
}

/* ── Chart Panels ── */
.chart-panel {
  flex: 1;
  min-height: 0;
}

.chart-panel canvas {
  width: 100% !important;
  flex: 1;
  min-height: 0;
}

/* ── Sources Panel ── */
.sources-panel {
  flex-shrink: 0;
  margin-top: 0.4rem;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 0.7rem;
}

.sources-panel summary {
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--gray-500);
  font-size: 0.7rem;
  user-select: none;
}

.sources-panel summary:hover {
  color: var(--gray-700);
}

.sources-content {
  padding: 0 0.75rem 0.5rem;
  max-height: 150px;
  overflow-y: auto;
}

.sources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 0.75rem;
}

.source-group h4 {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--gray-500);
  margin-bottom: 0.2rem;
}

.source-group ul {
  list-style: none;
  padding: 0;
}

.source-group li {
  color: var(--gray-600);
  font-size: 0.65rem;
  line-height: 1.4;
  margin-bottom: 0.2rem;
  padding-left: 0.6rem;
  position: relative;
}

.source-group li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--gray-400);
}

.source-group li strong {
  color: var(--gray-700);
}

/* ── Scrollbar ── */
.controls-grid::-webkit-scrollbar,
.sources-content::-webkit-scrollbar {
  width: 4px;
}

.controls-grid::-webkit-scrollbar-track,
.sources-content::-webkit-scrollbar-track {
  background: transparent;
}

.controls-grid::-webkit-scrollbar-thumb,
.sources-content::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: 2px;
}

.caveats-list {
  padding-left: 1.2rem;
  margin: 0;
  font-size: 0.7rem;
  color: var(--gray-600);
  line-height: 1.6;
}

.caveats-list li {
  margin-bottom: 0.2rem;
}

/* ── Responsive (tablet) ── */
@media (max-width: 1024px) {
  html, body {
    overflow: auto;
    height: auto;
  }

  .dashboard {
    overflow: visible;
  }

  .grid-main {
    grid-template-columns: 1fr;
    overflow: visible;
  }

  .grid-left, .grid-right {
    overflow: visible;
  }

  .scenarios-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .header-right {
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .panel, #controls-section, #scenarios-section {
    overflow: visible;
  }

  .controls-grid {
    overflow: visible;
    max-height: none;
  }

  .chart-panel {
    height: 280px;
    min-height: 0;
    flex: none;
  }

  .chart-panel canvas {
    max-height: 240px;
  }
}

@media (max-width: 768px) {
  html, body {
    overflow: auto;
    height: auto;
  }

  body {
    display: block;
  }

  header {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
    padding: 0.75rem;
  }

  .header-left {
    justify-content: space-between;
  }

  .header-right {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
  }

  .header-control {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.15rem;
  }

  .header-slider {
    width: 100%;
  }

  .header-slider input[type="range"] {
    width: 100%;
    flex: 1;
  }

  .header-control select {
    width: 100%;
  }

  .header-btn {
    text-align: center;
    padding: 0.5rem 0.7rem;
  }

  .dashboard {
    overflow: visible;
    padding: 0 0.5rem 0.75rem;
  }

  .kpi-bar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.4rem;
  }

  .kpi {
    padding: 0.5rem;
  }

  .kpi-value {
    font-size: 1rem;
  }

  .board-summary {
    font-size: 0.75rem;
    padding: 0.6rem 0.75rem;
  }

  .grid-main {
    grid-template-columns: 1fr;
    overflow: visible;
  }

  .grid-left, .grid-right {
    overflow: visible;
  }

  .scenarios-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.4rem;
  }

  .scenario-card {
    padding: 0.5rem;
  }

  .scenario-card .scenario-icon {
    font-size: 1.25rem;
  }

  .scenario-card .scenario-name {
    font-size: 0.7rem;
  }

  .scenario-card .scenario-desc {
    font-size: 0.55rem;
    white-space: normal;
  }

  .controls-header {
    flex-direction: column;
    align-items: stretch;
    gap: 0.4rem;
  }

  .controls-actions {
    flex-wrap: wrap;
    gap: 0.3rem;
  }

  .stack-buttons {
    flex-wrap: wrap;
  }

  .controls-grid {
    grid-template-columns: 1fr;
    overflow: visible;
    max-height: none;
  }

  .control-card {
    padding: 0.5rem 0.6rem;
  }

  .control-name {
    font-size: 0.8rem;
  }

  .control-desc {
    font-size: 0.7rem;
    white-space: normal;
  }

  .control-meta {
    font-size: 0.7rem;
  }

  .panel, #controls-section, #scenarios-section {
    overflow: visible;
    padding: 0.6rem;
  }

  .chart-panel {
    height: 260px;
    min-height: 0;
    flex: none;
    position: relative;
  }

  .chart-panel canvas {
    position: absolute;
    top: 30px;
    left: 0;
    right: 0;
    bottom: 0;
  }

  .sources-panel summary {
    font-size: 0.75rem;
    padding: 0.5rem 0.75rem;
  }

  .sources-grid {
    grid-template-columns: 1fr;
  }

  .sources-content {
    max-height: none;
    overflow: visible;
  }

  .cost-multiplier input[type="range"] {
    width: 80px;
  }

  .custom-cost-input {
    width: 80px;
    font-size: 0.7rem;
    padding: 0.2rem 0.3rem;
  }
}

@media (max-width: 480px) {
  header {
    padding: 0.5rem;
  }

  .header-right {
    grid-template-columns: 1fr;
  }

  .kpi-bar {
    grid-template-columns: 1fr 1fr;
  }

  .scenarios-grid {
    grid-template-columns: 1fr 1fr;
  }

  .scenario-card .scenario-desc {
    display: none;
  }
}

/* ── Print / PDF ── */
@page {
  size: landscape;
  margin: 0.4cm;
}

@media print {
  *, *::before, *::after {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }

  html, body {
    overflow: visible !important;
    height: auto !important;
    width: 100% !important;
    font-size: 11px;
  }

  body {
    display: block;
  }

  /* Header: compact one-liner */
  header {
    background: var(--blue-900) !important;
    padding: 0.25rem 0.6rem;
  }

  .header-btn, .controls-actions {
    display: none !important;
  }

  .header-control select,
  .header-slider input[type="range"] {
    display: none;
  }

  .tagline { display: none; }

  /* Dashboard: block flow, no flex constraints */
  .dashboard {
    display: block !important;
    overflow: visible !important;
    padding: 0 0.4rem;
  }

  /* KPIs: tight */
  .kpi-bar {
    display: flex;
    gap: 0.3rem;
    padding: 0.25rem 0;
  }

  .kpi {
    padding: 0.2rem 0.4rem;
  }

  .kpi-label { font-size: 0.55rem; }
  .kpi-value { font-size: 0.9rem; }

  /* Board summary */
  .board-summary {
    display: block !important;
    margin-bottom: 0.3rem;
    padding: 0.3rem 0.5rem;
    font-size: 0.7rem;
  }

  .board-summary.hidden {
    display: none !important;
  }

  /* Grid: side by side, auto height */
  .grid-main {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    gap: 0.4rem;
    overflow: visible !important;
    height: auto !important;
    min-height: 0;
  }

  .grid-left, .grid-right {
    display: block !important;
    overflow: visible !important;
    height: auto !important;
  }

  /* Panels */
  .panel {
    display: block !important;
    overflow: visible !important;
    padding: 0.3rem 0.5rem;
    margin-bottom: 0.3rem;
    page-break-inside: avoid;
  }

  .panel h2 {
    font-size: 0.7rem;
    margin-bottom: 0.2rem;
  }

  /* Scenarios: 4 across, tiny */
  .scenarios-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 0.2rem;
  }

  .scenario-card {
    padding: 0.2rem 0.3rem;
  }

  .scenario-card .scenario-icon { font-size: 0.8rem; }
  .scenario-card .scenario-name { font-size: 0.55rem; }
  .scenario-card .scenario-desc { display: none; }
  .scenario-card .scenario-impact { font-size: 0.65rem; }
  .scenario-card .scenario-freq { font-size: 0.5rem; }
  .scenario-card .scenario-ale { font-size: 0.6rem; margin-top: 0.1rem; padding-top: 0.1rem; }
  .scenario-card .scenario-ale-label { font-size: 0.45rem; }

  /* Controls: 3 across for print, very compact */
  .controls-header { margin-bottom: 0.2rem; }

  .controls-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 0.2rem;
    overflow: visible !important;
    max-height: none !important;
  }

  .control-card {
    padding: 0.2rem 0.3rem;
    gap: 0.2rem;
  }

  .control-card input[type="checkbox"] {
    width: 10px;
    height: 10px;
  }

  .control-name { font-size: 0.6rem; }
  .control-desc { font-size: 0.5rem; }
  .control-meta { font-size: 0.5rem; margin-top: 0.1rem; }

  /* Charts: fixed height so they render */
  .chart-panel {
    height: 180px !important;
    min-height: 180px;
    max-height: 180px;
    margin-bottom: 0.3rem;
  }

  .chart-panel canvas {
    max-height: 150px;
  }

  /* Sources: inline, no scroll */
  .sources-panel {
    margin-top: 0.2rem;
    page-break-inside: avoid;
  }

  .sources-panel summary { font-size: 0.6rem; padding: 0.2rem 0.5rem; }

  .sources-content {
    max-height: none !important;
    overflow: visible !important;
    padding: 0 0.5rem 0.3rem;
  }

  .sources-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 0.3rem;
  }

  .source-group h4 { font-size: 0.5rem; }
  .source-group li { font-size: 0.5rem; line-height: 1.3; margin-bottom: 0.1rem; }

  /* Hide tooltip */
  .control-tooltip { display: none !important; }
}