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

/* Custom scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #f5f0e8; }
::-webkit-scrollbar-thumb { background: #2b2014; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { opacity: 0.8; }
* { scrollbar-width: thin; scrollbar-color: #2b2014 #f5f0e8; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: #f5f0e8;
  color: #2b2014;
  line-height: 1.5;
  padding: 2rem 1rem;
}

.container { max-width: 960px; margin: 0 auto; }

header { margin-bottom: 0.75rem; padding-bottom: 0.5rem; display: flex; align-items: baseline; gap: 1rem; }
header h1 { font-size: 1.5rem; font-weight: 700; }
header p { display: none; }

.card {
  border: 1px solid #2b2014;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  background: #f5f0e8;
}

.card h2 {
  font-size: 0.85rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em;
  background: #2b2014; color: #f5f0e8;
  padding: 0.4rem 0.6rem;
  margin: -1.25rem -1.25rem 1rem -1.25rem;
}

.card-header-flex {
  display: flex; justify-content: space-between; align-items: center;
}

.card-header-link {
  font-size: 0.7rem; font-weight: 400; color: #f5f0e8; text-decoration: underline;
}

#drop-zone {
  border: 1px dashed #2b2014;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
}
#drop-zone:hover, #drop-zone.drag-over { background: #f5f0e8; }
#drop-zone .icon { display: none; }
#drop-zone .label { font-size: 0.9rem; font-weight: 600; }
#drop-zone .sublabel { font-size: 0.8rem; margin-top: 0.2rem; }

#file-info {
  margin-top: 0.75rem; padding: 0.5rem 0.75rem;
  border: 1px solid #2b2014; font-size: 0.85rem; display: none;
}
#file-info.visible { display: block; }

.controls { display: flex; flex-wrap: wrap; align-items: end; gap: 0.75rem; }

button {
  padding: 0.45rem 1rem; border: 1px solid #2b2014;
  font-size: 0.8rem; font-weight: 600; cursor: pointer;
  text-transform: uppercase; letter-spacing: 0.04em;
  font-family: inherit; background: #f5f0e8; color: #2b2014;
}
.btn-primary { background: #2b2014; color: #f5f0e8; }
.btn-primary:hover:not(:disabled) { opacity: 0.8; }
.btn-primary:disabled { background: transparent; color: #2b2014; cursor: not-allowed; }
.btn-secondary { background: #f5f0e8; color: #2b2014; }
.btn-secondary:hover { opacity: 0.8; }
.btn-success { background: #2b2014; color: #f5f0e8; }
.btn-success:hover { opacity: 0.8; }

.status-msg {
  padding: 0.5rem 0.75rem; font-size: 0.85rem;
  margin-top: 0.75rem; display: none; border: 1px solid #2b2014;
}
.status-msg.visible { display: block; }
.status-msg.error { background: #f5f0e8; }
.status-msg.success { background: #f5f0e8; }

#seed-display {
  text-align: center; padding: 0.75rem;
  border: 1px solid #2b2014; margin-bottom: 1.25rem;
  background: #f5f0e8;
}
#seed-display .seed-label {
  font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em;
}
#seed-display .seed-value { font-size: 1.25rem; font-weight: 700; }

.validation-list { list-style: none; }
.validation-list li {
  padding: 0.4rem 0; border-bottom: 1px solid #2b2014;
  display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem;
}
.validation-list li:last-child { border-bottom: none; }
.check-pass { font-weight: 700; min-width: 45px; }
.check-fail { font-weight: 700; min-width: 45px; text-decoration: underline; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.8rem; }
th {
  background: #2b2014; color: #f5f0e8; font-weight: 600; text-align: left;
  padding: 0.4rem 0.6rem; white-space: nowrap;
  text-transform: uppercase; letter-spacing: 0.04em; font-size: 0.75rem;
}
td { padding: 0.4rem 0.6rem; border-bottom: 1px solid #2b2014; }
tr.constrained td, td.constrained { background: #ece4d4; }
td.unoccupied { color: #8a7a6a; font-style: italic; }
td.no-unit { color: #ccc; }

.layout-table th, .layout-table td { text-align: center; }
.layout-table .floor-num { font-weight: 700; }

.legend { display: flex; gap: 1.5rem; flex-wrap: wrap; font-size: 0.75rem; margin-top: 0.5rem; }
.legend span { display: flex; align-items: center; gap: 0.3rem; }
.legend-swatch { display: inline-block; width: 12px; height: 12px; border: 1px solid #2b2014; }
.legend-swatch.constrained { background: #ece4d4; }
.legend-swatch.unoccupied { background: #f5f0e8; border-style: dashed; }

.hidden { display: none !important; }

@media (max-width: 640px) {
  body { padding: 1rem 0.5rem; }
  .controls { flex-direction: column; }
  .controls button { width: 100%; }
}

#custom-indicator {
  position: fixed; top: 0; left: 50%; transform: translateX(-50%);
  background: #2b2014; color: #f5f0e8; padding: 2px 12px;
  font-size: 0.7rem; z-index: 9998;
  text-transform: uppercase; letter-spacing: 0.05em;
}

#dev-script-box {
  display: block;
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #2b2014;
  padding: 0.75rem;
  background: #f5f0e8;
  font-family: monospace;
  font-size: 0.7rem;
  white-space: pre;
  word-wrap: normal;
  height: 400px;
  overflow: auto;
  line-height: 1.4;
  resize: vertical;
  tab-size: 2;
}

.dev-script-wrapper { position: relative; }

.dev-copy-btn {
  position: absolute; top: 0.4rem; right: 1rem;
  font-size: 0.7rem; color: #2b2014; text-decoration: underline; cursor: pointer; z-index: 1;
}

.dev-toggle {
  font-size: 0.75rem; color: #2b2014; text-decoration: underline; cursor: pointer;
  position: relative; top: -2px;
}

.btn-row {
  display: flex; justify-content: flex-end; gap: 0.5rem; margin-bottom: 1.25rem;
}

.run-status-spacing {
  margin-top: -1rem; margin-bottom: 1.25rem;
}

.table-wrap-spaced { margin-top: 0.75rem; }

.download-card { text-align: center; }

.download-btn-lg {
  font-size: 1.05rem; padding: 0.75rem 2rem;
}

.dev-upload-row {
  margin-top: 0.75rem; display: flex; gap: 0.5rem; align-items: center;
}