:root {
  --bg: #f2efe7;
  --panel: rgba(255, 251, 245, 0.88);
  --panel-border: rgba(54, 50, 42, 0.12);
  --ink: #1b1b1a;
  --muted: #6d675d;
  --accent: #0b6e4f;
  --accent-soft: rgba(11, 110, 79, 0.12);
  --bus-upper: #d97706;
  --bus-lower: #0369a1;
  --shadow: 0 18px 42px rgba(36, 31, 21, 0.12);
  --radius: 24px;
  --slot-width: 228px;
  --header-height: 56px;
  --busway-height: 104px;
  --power-stage-height: 116px;
  --asset-height: 136px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(217, 119, 6, 0.18), transparent 26%),
    radial-gradient(circle at top right, rgba(3, 105, 161, 0.18), transparent 28%),
    linear-gradient(180deg, #f8f4eb 0%, var(--bg) 100%);
}

.page-shell {
  width: calc(100% - 16px);
  max-width: none;
  margin: 0 auto;
  padding: 20px 0 40px;
}

.hero {
  display: grid;
  grid-template-columns: 1.8fr 1fr;
  gap: 20px;
  align-items: stretch;
  margin-bottom: 28px;
}

.eyebrow,
.row-name,
.busway-side,
.rack-meta,
.summary-label {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--muted);
}

h1,
h2 {
  margin: 0;
  font-family: "Trebuchet MS", Arial, sans-serif;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 4.4rem);
  line-height: 0.95;
  margin-top: 10px;
}

.hero-copy {
  max-width: 62ch;
  margin-top: 16px;
  font-size: 1.05rem;
  line-height: 1.6;
  color: #3b382f;
}

.summary-card,
.row-card,
.planner-card {
  background: var(--panel);
  backdrop-filter: blur(12px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.summary-card,
.planner-card {
  padding: 22px;
}

.summary-card {
  display: grid;
  gap: 12px;
  align-content: center;
}

.summary-value {
  font-size: 2rem;
  font-family: "Trebuchet MS", Arial, sans-serif;
}

.layout-board {
  display: grid;
  gap: 20px;
  width: max-content;
}

.viewport-shell {
  display: grid;
  gap: 12px;
  padding: 18px 22px 22px;
}

.input-shell {
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  background: rgba(255, 251, 245, 0.62);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-bottom: 20px;
}

.input-summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 18px 22px;
  cursor: pointer;
  font: 700 1rem/1 "Trebuchet MS", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink);
}

.input-summary::-webkit-details-marker {
  display: none;
}

.input-summary-copy {
  font: 700 0.76rem/1 "Trebuchet MS", Arial, sans-serif;
  color: var(--muted);
}

.input-shell[open] .input-summary {
  border-bottom: 1px solid rgba(54, 50, 42, 0.08);
}

.planner-card {
  margin-bottom: 0;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.equipment-json-card {
  margin: 0 0 20px;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.planner-form {
  display: grid;
  gap: 16px;
}

.planner-sections {
  display: grid;
  gap: 16px;
}

.planner-section {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid rgba(54, 50, 42, 0.1);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.36);
}

.planner-section h3 {
  margin: 0;
  font: 700 0.95rem/1 "Trebuchet MS", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink);
}

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

.planner-grid label {
  display: grid;
  gap: 8px;
  font: 700 0.76rem/1 "Trebuchet MS", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.planner-grid input,
.planner-grid select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(54, 50, 42, 0.14);
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  font: 400 0.95rem/1.2 "Trebuchet MS", Arial, sans-serif;
}

.draw-floorplan-button {
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, #0b6e4f, #155e75);
  color: white;
  padding: 12px 18px;
  font: 700 0.9rem/1 "Trebuchet MS", Arial, sans-serif;
  cursor: pointer;
}

.json-loader {
  display: grid;
  gap: 12px;
}

.json-source-copy span,
.json-status {
  font: 700 0.76rem/1.4 "Trebuchet MS", Arial, sans-serif;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.json-input {
  width: 100%;
  min-height: 180px;
  resize: vertical;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid rgba(54, 50, 42, 0.14);
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink);
  font: 400 0.92rem/1.5 Consolas, "Courier New", monospace;
}

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

.json-actions button {
  border: 0;
  border-radius: 999px;
  background: rgba(11, 110, 79, 0.14);
  color: var(--accent);
  padding: 10px 14px;
  font: 700 0.76rem/1 "Trebuchet MS", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.json-status {
  margin: 0;
}

.json-status.is-error {
  color: #991b1b;
}

.json-status.is-success {
  color: var(--accent);
}

.layout-shell {
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  background: rgba(255, 251, 245, 0.62);
  box-shadow: var(--shadow);
  overflow: hidden;
  width: 100%;
}

.viewport-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.viewport-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.assignment-panel {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 10px 14px;
  border-radius: 18px;
  background: rgba(255, 251, 245, 0.82);
  border: 1px solid var(--panel-border);
  box-shadow: 0 8px 20px rgba(36, 31, 21, 0.08);
}

.assignment-panel label {
  display: grid;
  gap: 6px;
  font: 700 0.72rem/1 "Trebuchet MS", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.assignment-panel select {
  min-width: 160px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(54, 50, 42, 0.14);
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  font: 400 0.9rem/1.2 "Trebuchet MS", Arial, sans-serif;
}

.zoom-control {
  margin-left: auto;
}

.row-bus-pills {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.bus-pill {
  border: 1px solid rgba(54, 50, 42, 0.12);
  border-radius: 18px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.56);
  color: var(--ink);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: start;
}

.bus-pill-copy {
  display: grid;
  gap: 6px;
}

.bus-pill span,
.busway-meta {
  font: 700 0.72rem/1.1 "Trebuchet MS", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.bus-pill strong,
.busway-copy strong {
  font: 700 0.92rem/1.1 "Trebuchet MS", Arial, sans-serif;
}

.bus-pill.is-active {
  border-color: rgba(11, 110, 79, 0.36);
  background: rgba(11, 110, 79, 0.12);
  box-shadow: inset 0 0 0 1px rgba(11, 110, 79, 0.14);
}

.bus-pill-actions {
  display: grid;
  gap: 8px;
}

.busway-apply,
.bus-pill-select {
  border: 0;
  border-radius: 999px;
  background: rgba(11, 110, 79, 0.14);
  color: var(--accent);
  padding: 8px 10px;
  font: 700 0.7rem/1 "Trebuchet MS", Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.zoom-control {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 251, 245, 0.82);
  border: 1px solid var(--panel-border);
  box-shadow: 0 8px 20px rgba(36, 31, 21, 0.08);
  font: 700 0.8rem/1 "Trebuchet MS", Arial, sans-serif;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.zoom-control input {
  width: 180px;
}

.layout-viewport {
  overflow: auto;
  min-height: 560px;
  padding: 12px;
  border-radius: var(--radius);
  background: rgba(255, 251, 245, 0.38);
  border: 1px solid rgba(54, 50, 42, 0.08);
  cursor: grab;
  touch-action: none;
}

.layout-viewport.is-dragging {
  cursor: grabbing;
}

.row-card {
  padding: 22px;
  display: grid;
  gap: 18px;
  border: 2px solid var(--power-plane-color, rgba(54, 50, 42, 0.12));
  box-shadow:
    inset 6px 0 0 var(--group-color, rgba(54, 50, 42, 0.22)),
    var(--shadow);
  background:
    linear-gradient(180deg, var(--power-plane-tint, rgba(255, 251, 245, 0.2)), rgba(255, 251, 245, 0.74)),
    var(--panel);
  transform: translateY(14px);
  opacity: 0;
  animation: row-enter 420ms ease forwards;
}

.row-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding-bottom: 8px;
  border-bottom: 1px solid color-mix(in srgb, var(--power-plane-color, #999) 28%, transparent);
}

.row-label {
  margin-top: 6px;
  font-size: 1.3rem;
  line-height: 1.2;
  max-width: 28ch;
}

.row-submeta {
  margin: 10px 0 0;
  font: 700 0.78rem/1.3 "Trebuchet MS", Arial, sans-serif;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.mts-pill {
  background: color-mix(in srgb, var(--power-plane-color, #0b6e4f) 14%, white);
  color: var(--power-plane-color, var(--accent));
  border: 1px solid color-mix(in srgb, var(--power-plane-color, #0b6e4f) 28%, transparent);
  padding: 10px 14px;
  border-radius: 999px;
  font: 700 0.95rem/1 "Trebuchet MS", Arial, sans-serif;
  white-space: nowrap;
}

.rack-grid {
  display: grid;
  grid-template-columns: repeat(var(--rack-count), minmax(var(--slot-width), var(--slot-width)));
  gap: 22px;
  align-items: start;
}

.rack-stack {
  width: var(--slot-width);
  display: grid;
  grid-template-rows:
    var(--header-height)
    var(--busway-height)
    var(--busway-height)
    var(--power-stage-height)
    var(--asset-height);
  gap: 14px;
  align-content: start;
  position: relative;
}

.rack-stack.section-start {
  padding-left: 14px;
  margin-left: 8px;
}

.rack-stack.section-start::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 22px;
  bottom: 0;
  width: 2px;
  border-radius: 999px;
  background: rgba(27, 27, 26, 0.18);
}

.slot-position {
  display: grid;
  justify-items: center;
  align-content: center;
  gap: 2px;
  text-align: center;
}

.slot-position strong {
  font: 700 1.28rem/1 "Trebuchet MS", Arial, sans-serif;
  color: var(--ink);
}

.busway,
.power-node,
.asset-card {
  width: 100%;
  border-radius: 18px;
}

.busway {
  min-height: var(--busway-height);
  padding: 16px 14px;
  color: white;
  box-shadow: inset 0 -10px 16px rgba(255, 255, 255, 0.08);
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
}

.busway-upper {
  background: linear-gradient(135deg, #f59e0b, var(--bus-upper));
}

.busway-lower {
  background: linear-gradient(135deg, #0ea5e9, var(--bus-lower));
}

.power-stage {
  height: var(--power-stage-height);
  display: grid;
  grid-template-rows: repeat(var(--node-count), minmax(0, 1fr));
  gap: 10px;
}

.power-stage-single {
  grid-template-rows: 1fr;
}

.power-node {
  background: linear-gradient(180deg, rgba(11, 110, 79, 0.14), rgba(11, 110, 79, 0.06));
  border: 1px solid rgba(11, 110, 79, 0.18);
  padding: 16px 14px;
  display: grid;
  gap: 8px;
  align-content: center;
  justify-items: center;
  text-align: center;
}

.asset-card {
  height: var(--asset-height);
  background: linear-gradient(180deg, var(--asset-start), var(--asset-end));
  color: #f8fafc;
  padding: 16px 14px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  overflow: hidden;
}

.asset-card::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 12px;
  border: 1px dashed rgba(255, 255, 255, 0.08);
}

.rack-type {
  width: fit-content;
  padding: 5px 8px;
  border-radius: 999px;
  font: 700 0.78rem/1 "Trebuchet MS", Arial, sans-serif;
  background: rgba(255, 255, 255, 0.12);
  color: #eef2f7;
  text-transform: uppercase;
  justify-self: center;
}

.asset-copy {
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 8px;
  text-align: center;
}

.asset-name {
  display: block;
  font: 700 1.34rem/1.1 "Trebuchet MS", Arial, sans-serif;
  text-align: center;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.asset-type-name {
  font: 700 1rem/1.1 "Trebuchet MS", Arial, sans-serif;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(248, 250, 252, 0.88);
}

.id-block {
  display: block;
  font: 700 1.02rem/1.2 "Trebuchet MS", Arial, sans-serif;
  letter-spacing: 0.03em;
  word-break: break-word;
  overflow-wrap: anywhere;
  text-align: center;
}

.busway .id-block {
  color: #fffdf8;
}

.power-node .id-block {
  color: var(--accent);
}

.source-block {
  font: 700 1rem/1 "Trebuchet MS", Arial, sans-serif;
  letter-spacing: 0.08em;
  color: #2f5445;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

@keyframes row-enter {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .planner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .assignment-panel {
    flex-wrap: wrap;
  }

  .input-summary {
    align-items: flex-start;
    flex-direction: column;
  }

  .row-bus-pills {
    grid-template-columns: 1fr;
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rack-grid {
    grid-template-columns: repeat(4, minmax(var(--slot-width), var(--slot-width)));
  }
}

@media (max-width: 740px) {
  .page-shell {
    width: min(100% - 20px, 1320px);
    padding-top: 20px;
  }

  .row-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .viewport-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

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

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

  .json-actions {
    flex-direction: column;
  }

  .rack-grid {
    grid-template-columns: repeat(2, minmax(var(--slot-width), var(--slot-width)));
    justify-content: center;
  }
}