:root {
  --ink: #111111;
  --paper: #f7f5f0;
  --accent: #c8102e;
  --muted: #6b6b6b;
  --rule: #d9d5cc;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.4;
}

.stage {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.5rem 4rem;
  position: relative;
}

.screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
}

.screen[hidden] {
  display: none;
}

.question {
  font-size: clamp(2.5rem, 9vw, 6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.locate-button {
  font: inherit;
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 1rem 2.5rem;
  background: var(--ink);
  color: var(--paper);
  border: 2px solid var(--ink);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.locate-button:hover,
.locate-button:focus-visible {
  background: var(--paper);
  color: var(--ink);
}

.error-message {
  color: var(--accent);
  font-size: 0.95rem;
  max-width: 32rem;
  letter-spacing: 0.02em;
}

.loading-message {
  font-size: clamp(1.1rem, 3.5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: 0.15em;
  animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.result-preface {
  font-size: clamp(1rem, 3vw, 1.5rem);
  font-weight: 600;
  letter-spacing: 0.35em;
  color: var(--muted);
}

.result-name {
  font-size: clamp(4rem, 18vw, 12rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
}

.result-detail {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  max-width: 28rem;
  color: var(--ink);
}

.result-method {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.result-accuracy {
  font-size: 0.9rem;
  max-width: 28rem;
  color: var(--muted);
  font-style: italic;
}

.text-button {
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  background: none;
  border: none;
  border-bottom: 2px solid var(--ink);
  padding: 0.25rem 0;
  cursor: pointer;
  color: var(--ink);
}

.stage-links {
  position: absolute;
  bottom: 1.5rem;
  display: flex;
  gap: 2rem;
}

.stage-links a {
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.stage-links a:hover {
  color: var(--ink);
}

.methodology {
  max-width: 40rem;
  margin: 0 auto;
  padding: 5rem 1.5rem;
  border-top: 1px solid var(--rule);
}

.methodology h2 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.methodology p {
  margin-bottom: 1.1rem;
}

.methodology-epigraph {
  font-style: italic;
  font-size: 1.15rem;
  line-height: 1.55;
  padding-left: 1.25rem;
  border-left: 3px solid var(--ink);
  margin-bottom: 1.75rem;
}

.methodology ul {
  margin: 0 0 1.1rem 1.4rem;
}

.methodology li {
  margin-bottom: 0.4rem;
}

.method-toggle {
  display: flex;
  justify-content: center;
  margin: 1.75rem 0;
}

.method-toggle-button {
  font: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 0.7rem 1.4rem;
  background: var(--paper);
  color: var(--ink);
  border: 2px solid var(--ink);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.method-toggle-button + .method-toggle-button {
  border-left: none;
}

.method-toggle-button.active {
  background: var(--ink);
  color: var(--paper);
}

.method-option {
  border: 1px solid var(--rule);
  padding: 1.25rem 1.5rem 0.25rem;
  margin-bottom: 1.1rem;
  opacity: 0.45;
  transition: opacity 0.2s ease, border-color 0.2s ease;
}

.method-option.active {
  opacity: 1;
  border-color: var(--ink);
}

.method-option .method-figure {
  margin: 1.5rem 0 1.25rem;
}

.method-option h3 {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.method-figure {
  margin: 2.5rem 0;
  text-align: center;
}

.method-figure figcaption {
  margin-top: 0.9rem;
  font-size: 0.85rem;
  color: var(--muted);
  font-style: italic;
}

.manhattan-map svg {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--rule);
}

.globe {
  width: 100%;
  max-width: 480px;
  height: auto;
  cursor: grab;
  touch-action: none;
}

.globe:active {
  cursor: grabbing;
}

.globe-legend {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.legend-swatch {
  width: 14px;
  height: 14px;
  border: 1px solid var(--ink);
  display: inline-block;
}

.legend-hint {
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--muted);
  font-style: italic;
}

.about a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.about a:hover {
  color: var(--accent);
}

.footer {
  text-align: center;
  padding: 2rem 1.5rem 3rem;
  color: var(--muted);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}