:root {
  color-scheme: light;
  --ink: #23211d;
  --muted: #6b665b;
  --paper: #f7f1e2;
  --panel: #fffaf0;
  --line: #d4c6aa;
  --accent: #2f6f73;
  --accent-2: #b64c31;
  --shadow: 0 16px 45px rgba(36, 28, 15, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow: hidden;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: #ebe1ce;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.app {
  display: grid;
  grid-template-rows: auto 1fr;
  height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 18px;
  border-bottom: 1px solid #c8b895;
  background: rgba(255, 250, 240, 0.94);
  box-shadow: 0 3px 16px rgba(55, 42, 21, 0.12);
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 12px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border: 2px solid var(--accent);
  background:
    linear-gradient(90deg, transparent 48%, var(--accent) 49%, var(--accent) 51%, transparent 52%),
    linear-gradient(0deg, transparent 48%, var(--accent) 49%, var(--accent) 51%, transparent 52%),
    #f2e4c8;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 18px;
  line-height: 1.2;
}

.brand p {
  margin-top: 3px;
  font-size: 13px;
  color: var(--muted);
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.tool-button,
.icon-button,
.wide-button {
  border: 1px solid #b9a985;
  color: var(--ink);
  background: #fff7e7;
  min-height: 36px;
}

.tool-button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0 11px;
  border-radius: 6px;
}

.tool-button.active {
  border-color: var(--accent);
  background: #dff0e7;
}

.icon {
  font-size: 19px;
  line-height: 1;
}

.icon-button {
  width: 38px;
  height: 36px;
  border-radius: 6px;
  font-size: 18px;
}

.workspace {
  display: grid;
  grid-template-columns: 292px 1fr;
  min-height: 0;
}

.panel {
  overflow: auto;
  padding: 16px;
  border-right: 1px solid #c8b895;
  background: var(--panel);
}

.panel section {
  padding: 0 0 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.panel section:last-child {
  border-bottom: 0;
}

h2 {
  margin-bottom: 12px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #514936;
}

.control {
  display: grid;
  gap: 8px;
  margin: 12px 0;
  font-size: 14px;
  color: var(--muted);
}

.control input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.checkbox {
  grid-template-columns: 18px 1fr;
  align-items: center;
  color: var(--ink);
}

.readout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
  padding: 9px 10px;
  border: 1px solid #d6c6a5;
  border-radius: 6px;
  background: #fff7e7;
  font-size: 14px;
}

.hint {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.wide-button {
  width: 100%;
  margin-top: 12px;
  border-radius: 6px;
}

.stage {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(72, 61, 44, 0.12) 1px, transparent 1px),
    linear-gradient(0deg, rgba(72, 61, 44, 0.12) 1px, transparent 1px),
    #d7ccb8;
  background-size: 28px 28px;
  touch-action: none;
}

.map-layer {
  position: absolute;
  left: 0;
  top: 0;
  width: 8202px;
  height: 8592px;
  transform-origin: 0 0;
  box-shadow: var(--shadow);
  background: var(--paper);
  will-change: transform;
}

.map-layer img {
  display: block;
  width: 100%;
  height: 100%;
  user-select: none;
  -webkit-user-drag: none;
}

.pin-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.pin {
  position: absolute;
  width: 22px;
  height: 26px;
  transform: translate(-50%, -100%);
  pointer-events: none;
}

.pin::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent-2);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.25);
}

.pin::after {
  content: attr(data-label);
  position: absolute;
  left: 26px;
  top: -2px;
  padding: 2px 6px;
  border-radius: 4px;
  background: #fff7e7;
  border: 1px solid #b9a985;
  font-size: 12px;
  font-weight: 700;
}

.instrument {
  position: absolute;
  left: 0;
  top: 0;
  transform-origin: center center;
  z-index: 5;
  user-select: none;
  touch-action: none;
}

.instrument.hidden {
  display: none;
}

.ruler {
  width: 560px;
  height: 86px;
  border: 1px solid rgba(96, 70, 28, 0.42);
  border-radius: 6px;
  background: rgba(255, 246, 210, 0.72);
  box-shadow: 0 8px 18px rgba(32, 25, 12, 0.2);
  backdrop-filter: blur(1px);
}

.drag-zone {
  position: absolute;
  inset: 0;
}

.ruler-scale {
  position: absolute;
  left: 12px;
  right: 12px;
  top: 0;
  height: 64px;
}

.tick {
  position: absolute;
  bottom: 0;
  width: 1px;
  background: rgba(31, 25, 17, 0.86);
}

.tick.minor {
  height: 11px;
}

.tick.medium {
  height: 18px;
}

.tick.major {
  height: 31px;
  width: 2px;
}

.tick-label {
  position: absolute;
  bottom: 34px;
  transform: translateX(-50%);
  font-size: 11px;
  color: #211f1a;
}

.ruler-edge {
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 18px;
  height: 2px;
  background: rgba(31, 25, 17, 0.8);
}

.handle {
  position: absolute;
  z-index: 4;
  width: 32px;
  height: 32px;
  border: 1px solid #8e7f61;
  border-radius: 50%;
  color: #1e1b16;
  background: #fff8df;
  box-shadow: 0 2px 7px rgba(0, 0, 0, 0.18);
}

.handle.move {
  left: 10px;
  top: 10px;
}

.handle.rotate {
  right: -16px;
  top: 50%;
  transform: translateY(-50%);
}

.ruler .handle.move {
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.protractor {
  width: 430px;
  height: 215px;
  transform-origin: 50% calc(100% - 3px);
  filter: drop-shadow(0 8px 18px rgba(32, 25, 12, 0.22));
}

.protractor canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.protractor-baseline {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 2px;
  height: 2px;
  background: rgba(24, 30, 34, 0.78);
}

.protractor-vertex {
  position: absolute;
  left: 50%;
  bottom: 3px;
  width: 30px;
  height: 30px;
  transform: translate(-50%, 50%);
  border: 2px solid #b64c31;
  border-radius: 50%;
  background:
    linear-gradient(90deg, transparent 46%, #b64c31 47%, #b64c31 53%, transparent 54%),
    linear-gradient(0deg, transparent 46%, #b64c31 47%, #b64c31 53%, transparent 54%),
    rgba(255, 248, 223, 0.82);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  pointer-events: none;
  z-index: 3;
}

.protractor .handle.move {
  left: 50%;
  top: 58%;
  bottom: auto;
  transform: translate(-50%, -50%);
}

.protractor .handle.rotate {
  left: calc(50% + 48px);
  right: auto;
  bottom: -13px;
  top: auto;
  transform: translateX(-50%);
}

@media (max-width: 900px) {
  body {
    overflow: auto;
  }

  .app {
    height: auto;
    min-height: 100vh;
  }

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

  .workspace {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(620px, 70vh);
  }

  .panel {
    border-right: 0;
    border-bottom: 1px solid #c8b895;
    display: grid;
    grid-template-columns: repeat(2, minmax(220px, 1fr));
    gap: 16px;
  }

  .panel section {
    margin-bottom: 0;
  }
}

@media (max-width: 560px) {
  .panel {
    grid-template-columns: 1fr;
  }

  .toolbar {
    width: 100%;
    justify-content: flex-start;
  }

  .tool-button {
    flex: 1 1 120px;
    justify-content: center;
  }
}