:root {
  --color-paper: #F3EFE6;
  --color-paper-alt: #EBE6DC;
  --color-paper-card: #FFFFFF;
  --color-ink: #1A1916;
  --color-ink-muted: #7A756D;
  --color-ink-dim: rgba(26, 25, 22, 0.35);
  --color-sea: #1F5C57;
  --color-sea-light: #2A7973;
  --color-sea-soft: rgba(31, 92, 87, 0.08);
  --color-hairline: #E4DDD2;
  --color-hairline-dark: #D3C9BC;
  
  --color-verified: #2E7D32;
  --color-verified-bg: #E8F5E9;
  --color-baseline: #1E3A8A;
  --color-baseline-bg: #EFF6FF;

  --ease-trousdale: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-camera: transform 600ms var(--ease-trousdale);
  --transition-dock: transform 450ms var(--ease-trousdale), opacity 300ms ease;
  --transition-fast: 150ms ease;
  
  --font-sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-paper);
  color: var(--color-ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Header */
.cape-header {
  height: 54px;
  background-color: var(--color-paper);
  border-bottom: 1px solid var(--color-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 100;
  gap: 16px;
  user-select: none;
}

.header-left {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-width: 240px;
}

.brand-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  cursor: pointer;
  transition: opacity var(--transition-fast);
}
.brand-title:hover {
  color: var(--color-sea);
}

.brand-sub {
  font-size: 11px;
  color: var(--color-ink-muted);
  letter-spacing: 0.01em;
}

.header-center {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  max-width: 640px;
}

.search-box {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 10px;
  color: var(--color-ink-muted);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  height: 32px;
  padding: 0 28px 0 30px;
  border-radius: 4px;
  border: 1px solid var(--color-hairline);
  background-color: var(--color-paper-alt);
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--color-ink);
  outline: none;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}
.search-box input:focus {
  border-color: var(--color-sea);
  background-color: var(--color-paper-card);
}

.btn-clear {
  position: absolute;
  right: 8px;
  background: none;
  border: none;
  font-size: 14px;
  color: var(--color-ink-muted);
  cursor: pointer;
}

.filter-pills {
  display: flex;
  gap: 4px;
}

.pill-btn {
  background: none;
  border: 1px solid transparent;
  padding: 4px 10px;
  border-radius: 3px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  color: var(--color-ink-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.pill-btn:hover {
  color: var(--color-ink);
  background-color: var(--color-paper-alt);
}
.pill-btn.active {
  color: var(--color-paper);
  background-color: var(--color-ink);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.view-toggle {
  display: flex;
  background-color: var(--color-paper-alt);
  padding: 2px;
  border-radius: 4px;
  border: 1px solid var(--color-hairline);
}

.toggle-btn {
  background: none;
  border: none;
  padding: 4px 12px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-ink-muted);
  border-radius: 3px;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.toggle-btn.active {
  color: var(--color-paper);
  background-color: var(--color-sea);
}

.btn-subtle {
  background: none;
  border: 1px solid var(--color-hairline);
  padding: 5px 10px;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  color: var(--color-ink);
  cursor: pointer;
  background-color: var(--color-paper-alt);
}
.btn-subtle:hover {
  border-color: var(--color-ink-muted);
}

.export-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  background-color: var(--color-paper-card);
  border: 1px solid var(--color-hairline);
  border-radius: 4px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  display: flex;
  flex-direction: column;
  min-width: 170px;
  z-index: 200;
  overflow: hidden;
}

.dropdown-item {
  padding: 8px 12px;
  font-size: 11px;
  color: var(--color-ink);
  text-decoration: none;
  transition: background-color var(--transition-fast);
}
.dropdown-item:hover {
  background-color: var(--color-paper-alt);
  color: var(--color-sea);
}

/* Main Viewport */
#app-viewport {
  flex: 1;
  position: relative;
  overflow: hidden;
}

.surface-view {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

/* SURFACE 1: PLOT */
.svg-container {
  width: 100%;
  height: 100%;
  cursor: grab;
}
.svg-container:active {
  cursor: grabbing;
}

#plot-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.plot-controls {
  position: absolute;
  bottom: 35px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 50;
}

.ctrl-btn {
  width: 30px;
  height: 30px;
  border-radius: 4px;
  border: 1px solid var(--color-hairline);
  background-color: var(--color-paper-card);
  color: var(--color-ink);
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04);
  transition: all var(--transition-fast);
}
.ctrl-btn:hover {
  background-color: var(--color-paper-alt);
  border-color: var(--color-sea);
  color: var(--color-sea);
}
.btn-reset-pos {
  color: var(--color-sea);
  font-size: 18px;
}

.drag-hint {
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  font-weight: 500;
  color: var(--color-ink-muted);
  background-color: rgba(243, 239, 230, 0.92);
  backdrop-filter: blur(8px);
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid var(--color-hairline);
  pointer-events: none;
  z-index: 40;
  user-select: none;
  animation: fadeIn 300ms ease;
}

.active-block-pill {
  position: absolute;
  top: 16px;
  left: 20px;
  background-color: var(--color-ink);
  color: var(--color-paper);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  z-index: 50;
  animation: fadeIn 200ms ease;
}
.active-block-pill button {
  background: none;
  border: none;
  color: var(--color-paper);
  cursor: pointer;
  font-size: 11px;
  opacity: 0.7;
}
.active-block-pill button:hover {
  opacity: 1;
}

.plot-legend {
  position: absolute;
  bottom: 35px;
  left: 20px;
  background-color: rgba(243, 239, 230, 0.88);
  backdrop-filter: blur(8px);
  border: 1px solid var(--color-hairline);
  padding: 6px 14px;
  border-radius: 4px;
  display: flex;
  gap: 14px;
  font-size: 10px;
  font-weight: 500;
  color: var(--color-ink-muted);
  user-select: none;
  z-index: 50;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

.legend-mark {
  display: inline-block;
}
.legend-mark.mark-center {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 2px solid var(--color-sea);
  background-color: rgba(31, 92, 87, 0.2);
}
.legend-mark.mark-school {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-ink);
}
.legend-mark.mark-college {
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background-color: var(--color-sea);
}
.legend-mark.mark-verified {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-verified);
}

/* 9-Block Boundaries (Draggable) */
.block-cluster-group {
  cursor: grab;
  transition: opacity 200ms ease;
}
.block-cluster-group.is-dragging {
  cursor: grabbing !important;
}
.block-cluster-group.is-dragging .block-boundary-ring {
  stroke: var(--color-sea) !important;
  stroke-width: 2.5px !important;
  fill: rgba(31, 92, 87, 0.1) !important;
}

.block-boundary-ring {
  fill: rgba(243, 239, 230, 0.35);
  stroke: var(--color-hairline-dark);
  stroke-width: 1px;
  transition: stroke 150ms ease, fill 150ms ease;
}
.block-cluster-group:hover .block-boundary-ring {
  stroke: var(--color-sea);
  fill: rgba(31, 92, 87, 0.04);
}
.ring-center {
  stroke: var(--color-sea);
  stroke-width: 1.5px;
  fill: rgba(31, 92, 87, 0.05);
}

.block-label-text {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  fill: var(--color-ink);
  text-anchor: middle;
  pointer-events: none;
}
.text-center-hub {
  fill: var(--color-sea);
  font-weight: 800;
}

.block-sub-count {
  font-family: var(--font-mono);
  font-size: 8.5px;
  fill: var(--color-ink-muted);
  text-anchor: middle;
  pointer-events: none;
}

/* Spatial Institution Nodes */
.inst-node {
  cursor: pointer;
  transition: transform 120ms ease, opacity 200ms ease;
}
.node-mark {
  transition: fill 150ms ease, r 150ms ease, stroke-width 150ms ease;
}
.node-mark.school {
  fill: var(--color-ink);
}
.node-mark.college {
  fill: var(--color-sea);
}
.node-mark.verified {
  fill: var(--color-verified);
}

.inst-node:hover .node-mark {
  r: 5.5px;
  stroke: var(--color-paper);
  stroke-width: 1.5px;
}

.node-hover-label {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  fill: var(--color-ink);
  pointer-events: none;
}

/* SURFACE 2: INDEX */
.index-container {
  width: 100%;
  height: 100%;
  overflow-y: auto;
  padding: 30px 40px 60px 40px;
  max-width: 1000px;
  margin: 0 auto;
}

.index-header-summary {
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-hairline);
}

.index-title {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.index-meta {
  font-size: 12px;
  color: var(--color-ink-muted);
  margin-top: 4px;
}

.index-block-group {
  margin-bottom: 28px;
}

.index-block-heading {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-sea);
  padding: 6px 0;
  border-bottom: 1px solid var(--color-hairline);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.index-block-count {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--color-ink-muted);
}

.index-row {
  display: grid;
  grid-template-columns: 2fr 90px 140px 140px 1fr;
  padding: 7px 6px;
  border-bottom: 1px solid rgba(228, 221, 210, 0.5);
  font-size: 11px;
  align-items: center;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}
.index-row:hover {
  background-color: var(--color-paper-alt);
}
.index-row.selected {
  background-color: var(--color-sea-soft);
  border-left: 2px solid var(--color-sea);
}

.col-name {
  font-weight: 600;
  color: var(--color-ink);
}
.col-type {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.type-school { color: var(--color-ink); }
.type-college { color: var(--color-sea); font-weight: 600; }

.col-cat, .col-mgmt, .col-loc {
  color: var(--color-ink-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* CALM DETAIL DOCK */
.detail-dock {
  position: absolute;
  top: 0;
  right: 0;
  width: 380px;
  height: 100%;
  background-color: var(--color-paper-card);
  border-left: 1px solid var(--color-hairline);
  box-shadow: -4px 0 24px rgba(0,0,0,0.06);
  z-index: 150;
  display: flex;
  flex-direction: column;
  transition: var(--transition-dock);
  overflow-y: auto;
}
.detail-dock.hidden {
  transform: translateX(100%);
  opacity: 0;
  pointer-events: none;
}

.dock-header {
  padding: 14px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--color-hairline);
}

.dock-close-btn {
  background: none;
  border: none;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 3px;
}
.dock-close-btn:hover {
  background-color: var(--color-paper-alt);
  color: var(--color-ink);
}

.badge-type {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: 3px;
  background-color: var(--color-paper-alt);
  color: var(--color-ink);
}

.dock-body {
  padding: 20px 18px 40px 18px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.dock-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.dock-meta-line {
  font-size: 11px;
  color: var(--color-sea);
  font-weight: 500;
  margin-top: -10px;
}

.dock-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.dock-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-ink-muted);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--color-hairline);
}

.dock-fact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.fact-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.fact-item.full-width {
  grid-column: 1 / -1;
}

.fact-label {
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--color-ink-muted);
}

.fact-val {
  font-size: 11px;
  color: var(--color-ink);
  word-break: break-word;
}
.fact-val a {
  color: var(--color-sea);
  text-decoration: none;
}
.fact-val a:hover {
  text-decoration: underline;
}

.font-mono { font-family: var(--font-mono); }
.font-medium { font-weight: 600; }
.text-sm { font-size: 10px; line-height: 1.4; }

.status-badge {
  font-size: 10px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 3px;
  display: inline-block;
  background-color: var(--color-baseline-bg);
  color: var(--color-baseline);
}
.status-badge.verified {
  background-color: var(--color-verified-bg);
  color: var(--color-verified);
}

.dock-notes-text {
  font-size: 10px;
  color: var(--color-ink-muted);
  line-height: 1.4;
  background-color: var(--color-paper-alt);
  padding: 8px 10px;
  border-radius: 4px;
}

/* Footer */
.cape-footer {
  height: 28px;
  background-color: var(--color-paper);
  border-top: 1px solid var(--color-hairline);
  display: flex;
  align-items: center;
  padding: 0 20px;
  z-index: 100;
  user-select: none;
}

.footer-inner {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10px;
  color: var(--color-ink-muted);
}

.disclaimer-text {
  font-weight: 500;
  letter-spacing: 0.01em;
}

.hidden {
  display: none !important;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  .cape-header {
    height: auto;
    flex-direction: column;
    padding: 8px 12px;
    gap: 8px;
  }
  .header-left, .header-center, .header-right {
    width: 100%;
    justify-content: space-between;
  }
  .detail-dock {
    width: 100%;
    height: 70%;
    top: auto;
    bottom: 0;
    border-left: none;
    border-top: 1px solid var(--color-hairline);
  }
  .detail-dock.hidden {
    transform: translateY(100%);
  }
  .index-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .plot-legend, .drag-hint {
    display: none;
  }
}