:root {
  color-scheme: light;
  --background: #f4f1e8;
  --panel: #fffdf8;
  --panel-strong: #eef3ea;
  --panel-warm: #fbf4e8;
  --text: #1d241f;
  --muted: #647064;
  --border: #cfd8c9;
  --border-strong: #b9c7b2;
  --primary: #276749;
  --primary-dark: #1f5139;
  --accent: #bc6c25;
  --disabled: #a6afa4;
  --shadow: 0 18px 45px rgba(26, 42, 31, 0.12);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(39, 103, 73, 0.1), transparent 35%),
    linear-gradient(180deg, rgba(188, 108, 37, 0.08), transparent 42%),
    var(--background);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

button {
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  min-height: 44px;
  transition:
    background-color 140ms ease,
    color 140ms ease,
    transform 140ms ease;
}

button:not(:disabled):hover {
  transform: translateY(-1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.68;
}

.app-shell {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0;
}

.hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

.hero h1 {
  max-width: 680px;
  margin: 4px 0 0;
  font-size: 40px;
  line-height: 1.1;
  letter-spacing: 0;
}

.eyebrow,
.label {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.resource-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(180px, auto) minmax(180px, auto);
  gap: 20px;
  align-items: center;
  margin-bottom: 20px;
  padding: 24px;
  background: #fffaf1;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.resource-panel > div {
  min-width: 0;
}

.production-breakdown {
  grid-column: 1 / -1;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.breakdown-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.breakdown-item {
  padding: 7px 10px;
  background: var(--panel-strong);
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.progression-panel {
  margin-bottom: 12px;
}

.current-goal-panel {
  margin-bottom: 12px;
}

.current-goal-content {
  padding: 18px 20px;
}

.current-goal-card {
  display: grid;
  gap: 12px;
}

.current-goal-card h3 {
  margin: 2px 0 0;
  font-size: 20px;
  letter-spacing: 0;
}

.current-goal-next {
  margin: 0;
  color: var(--primary);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.45;
}

.progression-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--border);
}

.chapter-goal-card {
  grid-column: 1 / -1;
  background: var(--panel-warm);
  padding: 18px;
}

.chapter-goal-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.chapter-goal-header h3 {
  margin: 2px 0 0;
  font-size: 20px;
  letter-spacing: 0;
}

.chapter-reward {
  margin: 8px 0 0;
  color: var(--primary);
  font-weight: 800;
}

.chapter-milestones {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.chapter-transition {
  max-width: 720px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.chapter-transition p:last-child {
  margin: 5px 0 0;
  color: var(--muted);
}

.goal-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.goal-item {
  padding: 10px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.goal-item.complete {
  border-color: rgba(39, 103, 73, 0.35);
  background: #f3f8ef;
}

.progression-item,
.progression-empty {
  margin: 0;
  background: var(--panel);
  padding: 16px;
}

.progression-item {
  display: grid;
  gap: 10px;
}

.progression-item h3 {
  margin: 2px 0 0;
  font-size: 18px;
  letter-spacing: 0;
}

.progress-meter {
  height: 8px;
  overflow: hidden;
  background: var(--panel-strong);
  border-radius: 999px;
}

.progress-meter span {
  display: block;
  height: 100%;
  background: var(--accent);
}

.milestone-banner {
  margin-bottom: 20px;
  padding: 18px 20px;
  background: #1d241f;
  border-radius: 8px;
  color: #ffffff;
  box-shadow: var(--shadow);
}

.milestone-banner .label {
  color: rgba(255, 255, 255, 0.72);
}

.milestone-banner h2 {
  margin: 4px 0;
  font-size: 24px;
  letter-spacing: 0;
}

.milestone-banner p {
  margin-bottom: 0;
}

.milestone-banner p + p {
  color: rgba(255, 255, 255, 0.78);
}

.milestone-banner.hidden {
  display: none;
}

.completion-modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(29, 36, 31, 0.38);
}

.completion-modal.hidden {
  display: none;
}

.completion-card {
  position: relative;
  width: min(620px, 100%);
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.completion-card h2 {
  margin: 4px 0 0;
  font-size: 28px;
  letter-spacing: 0;
}

.completion-copy {
  margin: 10px 0 0;
  color: var(--primary);
  font-weight: 800;
  line-height: 1.5;
}

.completion-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  margin-top: 18px;
}

.completion-grid ul {
  margin: 8px 0 0;
  padding-left: 18px;
}

.completion-grid li + li {
  margin-top: 5px;
}

.completion-next-label {
  margin-top: 18px;
}

.icon-button {
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  width: 36px;
  min-height: 36px;
  place-items: center;
  padding: 0;
  background: var(--panel-strong);
  color: var(--text);
}

.resource-value,
.rate-value {
  margin: 4px 0 0;
  font-weight: 800;
  overflow-wrap: anywhere;
  max-width: 100%;
}

.resource-value {
  font-size: clamp(34px, 5vw, 48px);
  line-height: 1;
}

.rate-value {
  color: var(--accent);
  font-size: clamp(20px, 3vw, 24px);
}

.chapter-value {
  margin: 4px 0 0;
  color: var(--primary);
  font-size: 22px;
  font-weight: 800;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.insight-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 20px;
  margin-top: 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 18px;
  background: var(--panel-strong);
  border-bottom: 1px solid var(--border-strong);
}

.collapsible-panel.collapsed .panel-heading {
  border-bottom: 0;
}

.collapsible-panel.collapsed [data-panel-content] {
  display: none;
}

.panel-toggle {
  min-height: 32px;
  padding: 0 12px;
  background: #ffffff;
  border: 1px solid var(--border);
  color: var(--primary);
  font-size: 13px;
}

.panel-note {
  max-width: 500px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.panel h2,
.shop-row h3 {
  margin: 0;
  letter-spacing: 0;
}

.panel h2 {
  font-size: 22px;
}

.shop-list {
  display: grid;
}

.upgrade-group + .upgrade-group {
  border-top: 1px solid var(--border);
}

.building-group + .building-group {
  border-top: 1px solid var(--border);
}

.building-group.collapsed .building-group-heading {
  border-bottom: 0;
}

.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border-strong);
}

.filter-tab {
  min-height: 36px;
  padding: 0 12px;
  background: var(--panel-strong);
  color: var(--muted);
}

.filter-tab.active {
  background: var(--primary);
  color: #ffffff;
}

.quantity-control {
  display: grid;
  justify-items: end;
  gap: 8px;
}

.quantity-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.quantity-button {
  min-height: 34px;
  padding: 0 10px;
  background: #ffffff;
  border: 1px solid var(--border);
  color: var(--muted);
}

.quantity-button.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.research-empty {
  margin: 0;
  padding: 18px 20px;
  color: var(--muted);
  font-weight: 700;
}

.upgrade-group-heading {
  padding: 14px 20px;
  background: #f8faf6;
  border-bottom: 1px solid var(--border);
}

.building-group-heading {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
  background: #f8faf6;
  border-bottom: 1px solid var(--border);
}

.building-group-heading h3,
.upgrade-group-heading h3 {
  margin: 3px 0 0;
  font-size: 18px;
}

.building-group-summary {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 7px;
  align-items: center;
}

.building-group-summary span {
  padding: 4px 7px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.shop-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(112px, auto);
  gap: 10px;
  align-items: center;
  padding: 10px 14px;
}

.shop-row + .shop-row {
  border-top: 1px solid var(--border);
}

.shop-row.locked {
  background: #f8faf6;
}

.shop-row.compact-locked {
  padding-block: 14px;
}

.shop-row.compact-locked .muted,
.shop-row.compact-locked .flavor-text {
  display: none;
}

.shop-row.affordable {
  box-shadow: inset 4px 0 0 var(--accent);
  background: var(--panel-warm);
}

.shop-row.purchased {
  background: #f5f8f2;
}

.shop-row.locked h3 {
  color: var(--muted);
}

.shop-row-title {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.row-tag {
  padding: 3px 8px;
  background: var(--panel-strong);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
}

.compact-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 6px;
}

.compact-meta span,
.details-panel span {
  display: inline-flex;
  align-items: center;
  padding: 4px 7px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.details-button {
  min-height: 30px;
  margin-top: 5px;
  padding: 0;
  background: transparent;
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
}

.details-panel {
  margin-top: 6px;
}

.building-row .muted[data-field="description"] {
  display: none;
}

.upgrade-row.compact-research {
  padding-block: 10px;
}

.upgrade-row.purchased {
  opacity: 0.82;
}

.upgrade-row.compact-research .muted,
.upgrade-row.compact-research .details-button,
.upgrade-row.compact-research .details-panel {
  display: none;
}

.upgrade-row .row-tag {
  background: #fff7e8;
  border-color: rgba(188, 108, 37, 0.28);
  color: #8c4b16;
}

.muted,
.small-text,
.lock-text,
.footer {
  color: var(--muted);
}

.muted {
  margin: 6px 0 0;
}

.small-text {
  margin: 10px 0 0;
  font-size: 14px;
  font-weight: 700;
}

.shop-row .small-text {
  display: grid;
  gap: 4px;
}

.flavor-text {
  margin: 8px 0 0;
  color: var(--primary);
  font-size: 14px;
  font-style: italic;
  line-height: 1.4;
}

.lock-text {
  margin: 10px 0 0;
  font-size: 14px;
  font-weight: 800;
}

.primary-button,
.secondary-button {
  padding: 0 16px;
  white-space: nowrap;
}

.primary-button {
  background: var(--primary);
  color: #ffffff;
}

.primary-button:not(:disabled):hover {
  background: var(--primary-dark);
}

.secondary-button {
  background: #ffffff;
  border: 1px solid var(--border);
  color: var(--text);
}

.primary-button:disabled {
  background: var(--disabled);
}

.footer {
  min-height: 24px;
  margin-top: 18px;
  font-size: 14px;
}

.notifications {
  position: fixed;
  right: 16px;
  bottom: 16px;
  display: grid;
  gap: 10px;
  width: min(320px, calc(100% - 32px));
  pointer-events: none;
}

.notification {
  padding: 12px 14px;
  background: #1d241f;
  border-radius: 8px;
  color: #ffffff;
  box-shadow: var(--shadow);
}

.notification.milestone {
  background: var(--primary);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--border);
}

.stat-item {
  min-height: 92px;
  padding: 16px;
  background: var(--panel);
}

.stat-item p:last-child {
  margin: 6px 0 0;
  font-size: 18px;
  font-weight: 800;
}

.achievement-list {
  display: grid;
  max-height: 460px;
  overflow: auto;
}

.achievement-group + .achievement-group {
  border-top: 1px solid var(--border-strong);
}

.achievement-group-heading {
  padding: 10px 20px;
  background: var(--panel-strong);
  border-bottom: 1px solid var(--border);
}

.achievement-item {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 20px;
  border-top: 1px solid var(--border);
}

.achievement-item:first-child {
  border-top: 0;
}

.achievement-item.locked {
  background: #f8faf6;
  opacity: 0.72;
}

.achievement-item.unlocked {
  box-shadow: inset 4px 0 0 var(--primary);
}

.achievement-item h3 {
  margin: 3px 0 0;
  font-size: 17px;
  letter-spacing: 0;
}

.achievement-status {
  margin: 0;
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  white-space: nowrap;
}

.achievement-reward {
  margin: 8px 0 0;
  color: var(--primary);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.4;
}

@media (max-width: 760px) {
  .app-shell {
    width: min(100% - 24px, 1040px);
    padding: 20px 0;
  }

  .hero,
  .resource-panel,
  .progression-list,
  .goal-list,
  .content-grid,
  .insight-grid,
  .completion-grid,
  .stat-grid,
  .shop-row {
    grid-template-columns: 1fr;
  }

  .hero {
    display: grid;
  }

  .hero h1 {
    font-size: 32px;
  }

  .resource-value {
    font-size: 40px;
  }

  .primary-button,
  .secondary-button {
    width: 100%;
  }

  .quantity-control {
    justify-items: start;
  }

  .quantity-buttons {
    justify-content: flex-start;
  }

  .building-group-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .building-group-summary {
    justify-content: flex-start;
  }
}