:root {
  --bg: #f4f5f9;
  --panel: #ffffff;
  --panel-border: #e1e3ee;
  --text: #1c1e2b;
  --text-dim: #5b5e72;
  --input-bg: #ffffff;
  --input-border: #c9cce0;
  --culture: #6f72ef;
  --culture-soft: #eceafd;
  --science: #38bdf8;
  --science-soft: #e6f7fe;
  --danger: #e0517a;
  --danger-soft: #fbe4ea;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(30, 30, 60, 0.06);
}
html[data-theme="dark"] {
  --bg: #14151f;
  --panel: #1b1d2b;
  --panel-border: #2b2e42;
  --text: #eceefb;
  --text-dim: #9a9dbd;
  --input-bg: #20223353;
  --input-bg: #232538;
  --input-border: #3a3d59;
  --culture-soft: #2a2a52;
  --science-soft: #123246;
  --danger-soft: #3a2130;
  --shadow: 0 2px 14px rgba(0, 0, 0, 0.35);
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  background: var(--bg);
  color: var(--text);
  padding: 24px;
  transition:
    background 0.2s ease,
    color 0.2s ease;
}
.wrap {
  max-width: 1180px;
  margin: 0 auto;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 12px;
  flex-wrap: wrap;
}
header h1 {
  font-size: 1.5rem;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
header p {
  margin: 4px 0 0;
  color: var(--text-dim);
  font-size: 0.9rem;
}
.theme-toggle {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 0.85rem;
  box-shadow: var(--shadow);
}
.daily-limit {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--panel-border);
}
.daily-limit-toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.82rem;
  color: var(--text-dim);
  cursor: pointer;
}
.daily-limit-toggle input {
  width: auto;
}
.daily-limit-fields {
  margin-top: 8px;
}
.daily-limit-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.daily-limit-input-row .s-daily-limit {
  flex: 0 0 100px;
}
.s-daily-limit.over-limit,
.s-daily-limit.over-limit:focus {
  border-color: var(--danger);
  border-width: 2px;
  outline: 2px solid var(--danger);
  outline-offset: 0;
  box-shadow: none;
}
.daily-limit-fields[hidden] {
  display: none;
}
.daily-limit-summary {
  margin: 7px 0 0;
  color: var(--text-dim);
  font-size: 0.8rem;
  line-height: 1.4;
}
.daily-limit-warning {
  margin: 0;
  color: var(--danger);
  font-size: 0.8rem;
  line-height: 1.4;
  font-weight: 600;
}
.daily-limit-warning[hidden] {
  display: none;
}
.grid {
  display: grid;

  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr;
  }
}
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
.panel.culture {
  border-top: 4px solid var(--culture);
}
.panel.science {
  border-top: 4px solid var(--science);
}
.panel h2 {
  margin: 0 0 14px;
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel.culture h2 {
  color: var(--culture);
}
.panel.science h2 {
  color: var(--science);
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}
label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 4px;
}
input[type="number"],
input[type="text"] {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.9rem;
}
input:focus {
  outline: 2px solid var(--culture);
  outline-offset: 1px;
}
.panel.science input:focus {
  outline-color: var(--science);
}
.passive-box {
  margin: 14px 0 18px;
}
h3.sub {
  font-size: 0.9rem;
  margin: 18px 0 8px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.settlement {
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 10px;
  position: relative;
  background: rgba(128, 128, 128, 0.03);
}
.panel.culture .settlement {
  border-color: var(--culture);
}
.panel.science .settlement {
  border-color: var(--science);
}
.settlement .field-row {
  grid-template-columns: 1fr 1fr 1fr;
}
.settlement-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.builder-flag {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  margin-top: 6px;
}
.builder-flag input {
  width: auto;
}
.tooltip {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--text-dim);
  color: var(--panel);
  font-size: 0.68rem;
  cursor: help;
  user-select: none;
}
.tooltip .tip-text {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: 130%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.75rem;
  width: 220px;
  line-height: 1.3;
  z-index: 10;
  transition: opacity 0.15s ease;
  box-shadow: var(--shadow);
}
.tooltip:hover .tip-text,
.tooltip:focus .tip-text {
  visibility: visible;
  opacity: 1;
}
.remove-btn,
.chip-del {
  position: relative;
}
.remove-btn {
  background: var(--danger-soft);
  color: var(--danger);
  border: none;
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
}
.confirm-armed {
  background: var(--danger) !important;
  color: #fff !important;
}
.confirm-tip {
  position: fixed;
  background: var(--danger);
  color: #fff;
  padding: 6px 9px;
  border-radius: 8px;
  font-size: 0.7rem;
  white-space: nowrap;
  box-shadow: var(--shadow);
  z-index: 200;
}
.confirm-tip::after {
  content: "";
  position: absolute;
  top: 100%;
  left: var(--arrow-left, 12px);
  border: 5px solid transparent;
  border-top-color: var(--danger);
}
.add-btn {
  width: 100%;
  padding: 9px;
  border-radius: 8px;
  border: 1px dashed var(--input-border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.85rem;
  margin-top: 4px;
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    color 0.15s ease,
    outline 0.15s ease;
}
.panel.culture .add-btn:hover {
  border-color: var(--culture);
  color: var(--culture);
}
.panel.science .add-btn:hover {
  border-color: var(--science);
  color: var(--science);
}
.add-btn.dropzone.drag-active {
  border-style: solid;
}
.panel.culture .add-btn.dropzone.drag-active {
  border-color: var(--culture);
  color: var(--culture);
  background: var(--culture-soft);
}
.panel.science .add-btn.dropzone.drag-active {
  border-color: var(--science);
  color: var(--science);
  background: var(--science-soft);
}
.add-btn.dropzone.drag-over {
  outline: 2px dashed currentColor;
  outline-offset: 2px;
}

.results {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--panel-border);
}
.result-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 0.88rem;
}
.result-row .label {
  color: var(--text-dim);
}
.result-row .value {
  font-weight: 600;
}
.big-result {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 6px 0 12px;
}
.panel.culture .big-result {
  color: var(--culture);
}
.panel.science .big-result {
  color: var(--science);
}

/* Quick highlight pulse on any value that just changed after a recompute */
@keyframes valueFlashCulture {
  0% {
    background: var(--culture-soft);
  }
  100% {
    background: transparent;
  }
}
@keyframes valueFlashScience {
  0% {
    background: var(--science-soft);
  }
  100% {
    background: transparent;
  }
}
[data-key] {
  border-radius: 4px;
  padding: 0 2px;
  margin: 0 -2px;
}
.panel.culture .value-flash {
  animation: valueFlashCulture 0.5s ease-out;
}
.panel.science .value-flash {
  animation: valueFlashScience 0.5s ease-out;
}
.builder-improve {
  margin-top: 10px;
  font-size: 0.82rem;
}
.builder-improve .item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 0;
  color: var(--text-dim);
}
.builder-improve .item span.name {
  color: var(--text);
  flex: 1;
}
.builder-improve .item span.builder-count {
  white-space: nowrap;
  min-width: 34px;
  text-align: right;
}
.builder-improve .item span.time-saved {
  white-space: nowrap;
  min-width: 84px;
  text-align: right;
}
.warn {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 6px;
}
footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.75rem;
  margin-top: 30px;
}

/* Settlement library */
.library-panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.library-panel h2 {
  margin: 0 0 4px;
  font-size: 1.1rem;
}
.library-panel p.hint {
  margin: 0 0 14px;
  font-size: 0.8rem;
  color: var(--text-dim);
}
.library-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.library-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(128, 128, 128, 0.08);
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  padding: 6px 8px 6px 12px;
  font-size: 0.82rem;
  cursor: grab;
  user-select: none;
  touch-action: none;
}
.library-chip:active {
  cursor: grabbing;
}
.library-chip.dragging-source {
  opacity: 0.4;
}
.chip-ghost {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 300;
  opacity: 0.92;
  box-shadow: var(--shadow);
}
.library-chip .key-badge {
  font-size: 0.68rem;
  color: var(--text-dim);
  background: rgba(128, 128, 128, 0.15);
  border-radius: 999px;
  padding: 1px 6px;
}
.library-chip .chip-del {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.85rem;
  line-height: 1;
  padding: 0 2px;
}
.library-chip .chip-del:hover {
  color: var(--danger);
}
.library-empty {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.dropzone {
  border-radius: 10px;
  transition:
    background 0.15s ease,
    outline 0.15s ease;
}
.dropzone.drag-over {
  outline: 2px dashed var(--culture);
  outline-offset: 4px;
  background: var(--culture-soft);
}
.panel.science .dropzone.drag-over {
  outline-color: var(--science);
  background: var(--science-soft);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 20, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}
.modal-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 22px;
  max-width: 420px;
  width: 100%;
  box-shadow: var(--shadow);
}
.modal-card h3 {
  margin: 0 0 4px;
  font-size: 1.1rem;
}
.modal-card .key-badge {
  font-size: 0.72rem;
  color: var(--text-dim);
}
.modal-section {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--panel-border);
}
.modal-section h4 {
  margin: 0 0 8px;
  font-size: 0.85rem;
}
.modal-section.culture h4 {
  color: var(--culture);
}
.modal-section.science h4 {
  color: var(--science);
}
.modal-section .stat-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  padding: 3px 0;
  color: var(--text-dim);
}
.modal-section .stat-row span.v {
  color: var(--text);
  font-weight: 600;
}
.modal-close {
  padding: 9px;
  border-radius: 8px;
  border: 1px solid var(--input-border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-size: 0.85rem;
  flex: 1;
}
.modal-builder-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  margin-top: 22px;
}
.modal-builder-label input {
  width: auto;
}