/* ==========================================================================
   Fudosan West Coast (fudosan.prealpha.si)
   Japanese Washi × Tufte Architectural Drafting Studio Stylesheet
   Self-contained (zero external font/CDN fetches — strict CSP compliant)
   ========================================================================== */

:root {
  --bg-paper: #f5f0e6;
  --bg-elevated: #fcfaf5;
  --bg-subtle: #ebe4d6;
  --bg-canvas: #161924;
  --ink: #181720;
  --ink-secondary: #4c4958;
  --ink-muted: #746f80;
  --border: #d6cdbc;
  --border-strong: #b6aa95;

  /* Architectural & Epistemic Accents */
  --vermilion: #c84b31;     /* Hanko / AI & Japanese Anchor */
  --vermilion-soft: rgba(200, 75, 49, 0.12);
  --indigo: #234b73;        /* Primary Pacific / County Roll */
  --indigo-soft: rgba(35, 75, 115, 0.12);
  --pine: #246a52;          /* Positive Growth / FACT */
  --pine-soft: rgba(36, 106, 82, 0.13);
  --ochre: #a86f1e;         /* MODEL / FX / Warning */
  --ochre-soft: rgba(168, 111, 30, 0.14);
  --plum: #6d3b6b;          /* CONFLICT */
  --plum-soft: rgba(109, 59, 107, 0.13);
  --crimson: #a82e2e;       /* Severe Drawdown */
  --crimson-soft: rgba(168, 46, 46, 0.12);

  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Sans", "Noto Sans JP", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --radius-sm: 4px;
  --radius-md: 7px;
  --radius-lg: 10px;
  --shadow-card: 0 1px 3px rgba(20, 18, 28, 0.06), 0 6px 18px rgba(20, 18, 28, 0.04);
}

[data-theme="dark"] {
  --bg-paper: #10131b;
  --bg-elevated: #171b26;
  --bg-subtle: #202636;
  --bg-canvas: #0c0e15;
  --ink: #efe9dc;
  --ink-secondary: #c2bba9;
  --ink-muted: #8c8696;
  --border: #2c3347;
  --border-strong: #414b66;

  --vermilion: #e86b4f;
  --vermilion-soft: rgba(232, 107, 79, 0.18);
  --indigo: #6ca2d9;
  --indigo-soft: rgba(108, 162, 217, 0.16);
  --pine: #4db892;
  --pine-soft: rgba(77, 184, 146, 0.16);
  --ochre: #e3a84b;
  --ochre-soft: rgba(227, 168, 75, 0.16);
  --plum: #c484c1;
  --plum-soft: rgba(196, 132, 193, 0.16);
  --crimson: #e06c6c;
  --crimson-soft: rgba(224, 108, 108, 0.16);

  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.35);
}

*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--indigo);
  text-decoration: underline;
  text-underline-offset: 2px;
}

button, select, input {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

/* ---------- Top Studio Masthead ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.masthead-inner {
  max-width: 1520px;
  margin: 0 auto;
  padding: 10px 20px 0;
}

.masthead-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hanko-seal {
  width: 34px;
  height: 34px;
  border: 2px solid var(--vermilion);
  border-radius: 5px;
  color: var(--vermilion);
  display: grid;
  place-items: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 13px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-align: center;
  flex-shrink: 0;
  background: var(--vermilion-soft);
}

.brand-titles h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-muted);
}

.masthead-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.ticker-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border-radius: var(--radius-sm);
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.ticker-pill strong {
  color: var(--vermilion);
}

.seg-toggle {
  display: inline-flex;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.seg-toggle button {
  border: none;
  background: transparent;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  cursor: pointer;
  color: var(--ink-secondary);
  transition: background 0.15s, color 0.15s;
}

.seg-toggle button.active {
  background: var(--ink);
  color: var(--bg-elevated);
  font-weight: 600;
}

.icon-btn {
  border: 1px solid var(--border);
  background: var(--bg-subtle);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  cursor: pointer;
}

.icon-btn:hover {
  border-color: var(--border-strong);
}

/* ---------- Navigation Tabs ---------- */
.nav-tabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.nav-tab {
  border: 1px solid transparent;
  border-bottom: 2.5px solid transparent;
  background: transparent;
  padding: 8px 13px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-secondary);
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.nav-tab:hover {
  color: var(--ink);
  background: var(--bg-subtle);
  border-top-left-radius: var(--radius-sm);
  border-top-right-radius: var(--radius-sm);
}

.nav-tab.active {
  color: var(--vermilion);
  border-bottom-color: var(--vermilion);
  background: var(--bg-paper);
  border-top-color: var(--border);
  border-left-color: var(--border);
  border-right-color: var(--border);
  border-top-left-radius: var(--radius-sm);
  border-top-right-radius: var(--radius-sm);
}

.tab-count {
  font-family: var(--font-mono);
  font-size: 10.5px;
  padding: 1px 5px;
  border-radius: 3px;
  background: var(--bg-subtle);
  color: var(--ink-muted);
}

/* ---------- Main Container & Epistemic Strip ---------- */
.main-wrap {
  max-width: 1520px;
  margin: 0 auto;
  padding: 18px 20px 56px;
}

.epistemic-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 14px;
  margin-bottom: 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 4px solid var(--indigo);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--ink-secondary);
}

.badge-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.prov-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 7px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.prov-FACT {
  background: var(--pine-soft);
  color: var(--pine);
  border: 1px solid rgba(36, 106, 82, 0.3);
}

.prov-CONFLICT {
  background: var(--plum-soft);
  color: var(--plum);
  border: 1px solid rgba(109, 59, 107, 0.3);
}

.prov-MODEL {
  background: var(--ochre-soft);
  color: var(--ochre);
  border: 1px solid rgba(168, 111, 30, 0.32);
}

.prov-INTERPRETIVE_MASSING {
  background: var(--indigo-soft);
  color: var(--indigo);
  border: 1px solid rgba(35, 75, 115, 0.32);
}

/* ---------- Panels & Grid Helpers ---------- */
.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 18px;
}

.grid-sidebar {
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  gap: 16px;
  margin-bottom: 18px;
}

@media (max-width: 1180px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-sidebar { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 15px 16px;
  box-shadow: var(--shadow-card);
}

.card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.card-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
}

.card-subtitle {
  font-size: 12px;
  color: var(--ink-muted);
}

.kpi-num {
  font-family: var(--font-serif);
  font-size: 25px;
  font-weight: 700;
  line-height: 1.15;
  margin: 4px 0;
}

.kpi-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-muted);
}

.kpi-note {
  font-size: 12.5px;
  color: var(--ink-secondary);
  margin-top: 6px;
}

.delta-pos { color: var(--pine); font-weight: 600; }
.delta-neg { color: var(--crimson); font-weight: 600; }
.delta-warn { color: var(--ochre); font-weight: 600; }

/* ---------- Filter Bars & Inputs ---------- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.input-box, .select-box {
  background: var(--bg-paper);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 12.5px;
  color: var(--ink);
  min-width: 0;
  max-width: 100%;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.filter-chip {
  border: 1px solid var(--border);
  background: var(--bg-paper);
  border-radius: 999px;
  padding: 4px 11px;
  font-size: 12px;
  cursor: pointer;
  color: var(--ink-secondary);
  transition: all 0.14s;
}

.filter-chip:hover {
  border-color: var(--border-strong);
  color: var(--ink);
}

.filter-chip.active {
  background: var(--indigo);
  border-color: var(--indigo);
  color: #ffffff;
  font-weight: 600;
}

.action-btn {
  border: 1px solid var(--border-strong);
  background: var(--bg-subtle);
  border-radius: var(--radius-sm);
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.action-btn:hover {
  background: var(--ink);
  color: var(--bg-elevated);
}

.action-btn.primary {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: #ffffff;
}

/* ---------- Data Tables ---------- */
.table-scroll {
  overflow-x: auto;
  max-height: 540px;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
}

table.data-table thead th {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--bg-subtle);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1.5px solid var(--border-strong);
  cursor: pointer;
  white-space: nowrap;
}

table.data-table tbody td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

table.data-table tbody tr:hover {
  background: var(--indigo-soft);
}

.num-col {
  text-align: right !important;
  font-family: var(--font-mono);
}

/* ---------- Synthetic Physical Modeler Workbench ---------- */
.model-catalog-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 700px;
  overflow-y: auto;
  padding-right: 4px;
}

.model-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-paper);
  cursor: pointer;
  text-align: left;
  transition: border-color 0.14s, background 0.14s;
}

.model-item:hover {
  border-color: var(--indigo);
}

.model-item.active {
  border-color: var(--vermilion);
  border-left-width: 4px;
  background: var(--vermilion-soft);
}

.model-item-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 6px;
  font-weight: 600;
  font-size: 13px;
}

.model-item-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-muted);
}

.stage-switcher {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

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

.stage-btn {
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-paper);
  text-align: left;
  cursor: pointer;
  transition: all 0.15s;
}

.stage-btn strong {
  display: block;
  font-size: 12.5px;
  margin-bottom: 2px;
}

.stage-btn span {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-muted);
}

.stage-btn.active {
  border-color: var(--vermilion);
  background: var(--vermilion-soft);
}

.stage-btn.active strong {
  color: var(--vermilion);
}

.viewport-frame {
  position: relative;
  width: 100%;
  min-height: 460px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  color: #f3ecdf;
}

.viewport-hud {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(16, 18, 27, 0.88);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.hud-sliders {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.hud-sliders label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #d6cebe;
}

.hud-sliders input[type="range"] {
  width: 96px;
  accent-color: #e86b4f;
}

/* Stage 1 Layout */
.stage1-split {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 14px;
  padding: 14px;
}

@media (max-width: 960px) {
  .stage1-split { grid-template-columns: 1fr; }
}

.portrait-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.16);
  display: block;
}

.section-spec-panel {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: 12.5px;
}

.cost-bar-track {
  height: 11px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
  margin: 4px 0 10px;
}

.cost-bar-fill {
  height: 100%;
  border-radius: 3px;
}

/* Stage 2 Parallax Shadowbox */
.shadowbox-stage {
  position: relative;
  width: 100%;
  height: 450px;
  overflow: hidden;
  cursor: grab;
  user-select: none;
}

.sb-layer {
  position: absolute;
  inset: -24px;
  pointer-events: none;
  transition: transform 0.08s ease-out;
}

/* Canvas Viewports */
.canvas-wrap {
  position: relative;
  width: 100%;
  height: 460px;
}

.canvas-wrap canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

.canvas-wrap canvas:active {
  cursor: grabbing;
}

/* Chart Containers */
.chart-box {
  position: relative;
  width: 100%;
  height: 390px;
  background: var(--bg-paper);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.chart-box canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.chart-tooltip {
  position: fixed;
  z-index: 100;
  pointer-events: none;
  background: rgba(20, 19, 28, 0.95);
  color: #f6efe2;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius-sm);
  padding: 8px 11px;
  font-size: 12px;
  max-width: 310px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
  display: none;
}

/* Tax Lab Sliders */
.calc-control {
  margin-bottom: 12px;
}

.calc-control label {
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  font-weight: 600;
  margin-bottom: 4px;
}

.calc-control input[type="range"] {
  width: 100%;
  accent-color: var(--vermilion);
}

.footer-note {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--ink-muted);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}