html,
body {
  height: 100%;
  margin: 0;
}

body {
  overflow: hidden;
  background: #07100d;
  color: #f4fbff;
  font-family: Arial, sans-serif;
}

button,
input,
select,
textarea {
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  font: inherit;
}

button {
  min-height: 40px;
  border: 0;
  background: #1967d2;
  color: #fff;
  cursor: pointer;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  box-sizing: border-box;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  padding: 10px;
}

textarea {
  resize: vertical;
}

#builderShell {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  height: 100vh;
}

#builderPanel {
  display: grid;
  align-content: start;
  gap: 10px;
  overflow: auto;
  padding: 14px;
  background: #0c1714;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

#builderPanel header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

#builderPanel header a {
  color: #9ed6ff;
}

#builderPanel h1 {
  margin: 0;
  font-size: 24px;
}

#builderPanel h2 {
  margin: 8px 0 0;
  font-size: 16px;
}

#builderPanel label {
  color: #acc1cc;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.tool-grid,
.button-grid,
.view-tools {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.button-grid button:last-child:nth-child(odd) {
  grid-column: 1 / -1;
}

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

.tool-grid button {
  background: #2e3b44;
}

.tool-grid button.active {
  background: #1b8a5d;
}

.view-tools {
  grid-template-columns: 1fr 1fr 1fr auto;
  align-items: center;
}

.view-tools span {
  color: #ffe071;
  font-size: 12px;
  font-weight: 800;
  text-align: right;
}

.road-tools {
  display: grid;
  gap: 8px;
  padding: 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.road-tools label {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.road-tools input[type="range"] {
  padding: 0;
}

.tool-help {
  margin: 0;
  color: #c5d5dd;
  font-size: 12px;
  line-height: 1.35;
}

button.secondary {
  background: #45515a;
}

#missionList {
  display: grid;
  gap: 8px;
}

.mission-row {
  display: grid;
  gap: 6px;
  padding: 9px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
}

.mission-row strong {
  color: #fff0a6;
}

.mission-row span {
  color: #c5d5dd;
  font-size: 12px;
}

.mission-row button {
  min-height: 34px;
}

#builderStatus {
  margin: 4px 0 0;
  color: #ffe071;
  font-size: 13px;
  line-height: 1.35;
}

#mapWrap {
  min-width: 0;
  overflow: hidden;
  background: #18351f;
}

#builderCanvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

@media (max-width: 860px) {
  body {
    overflow: auto;
  }

  #builderShell {
    grid-template-columns: 1fr;
    height: auto;
  }

  #mapWrap {
    height: 70vh;
  }
}