:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  color: #25222a;
  background: #f3f6f0;
  --panel: #ffffff;
  --ink: #25222a;
  --muted: #655f69;
  --line: #d9ded4;
  --accent: #f05d42;
  --teal: #1b8f79;
  --gold: #c99418;
  --focus: #7b55c8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(240, 93, 66, 0.12), transparent 34%),
    linear-gradient(225deg, rgba(27, 143, 121, 0.13), transparent 36%),
    #f3f6f0;
}

button,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 26px 0 36px;
}

.topbar,
.game-layout,
.summary {
  width: 100%;
}

.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0 22px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--teal);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(2.1rem, 5vw, 4.8rem);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 10px;
  font-size: 1.35rem;
  line-height: 1.15;
  letter-spacing: 0;
}

.score-strip {
  display: grid;
  gap: 3px;
  min-width: 138px;
  padding: 10px 12px;
  color: #ffffff;
  background: #25222a;
  border: 2px solid #25222a;
  border-radius: 8px;
  text-align: right;
}

.score-strip span {
  color: #e8ece4;
  font-size: 0.78rem;
}

.score-strip strong {
  font-size: 1.3rem;
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.78fr) minmax(0, 1.55fr);
  gap: 18px;
  align-items: start;
}

.case-panel,
.timeline-panel,
.summary {
  background: var(--panel);
  border: 2px solid #25222a;
  border-radius: 8px;
  box-shadow: 6px 6px 0 rgba(37, 34, 42, 0.12);
}

.case-panel {
  position: sticky;
  top: 18px;
  padding: 20px;
}

.case-panel p {
  color: var(--muted);
}

.clue-list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding-left: 22px;
}

.clue-list li {
  padding-left: 4px;
}

.challenge-card {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 2px dashed var(--line);
}

.challenge-card code {
  display: block;
  max-width: 100%;
  padding: 10px 12px;
  overflow-wrap: anywhere;
  color: var(--ink);
  background: #f7f8f4;
  border: 2px solid var(--line);
  border-radius: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.78rem;
  line-height: 1.35;
}

.challenge-card .ghost-button {
  justify-self: start;
}

.result-panel {
  min-height: 64px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 2px dashed var(--line);
  color: var(--muted);
}

.result-panel strong,
.result-panel span {
  display: block;
}

.result-panel strong {
  color: var(--ink);
}

.timeline-panel {
  padding: 18px;
}

.timeline-head {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.timeline {
  display: grid;
  gap: 10px;
  margin: 12px 0 16px;
  padding: 0;
  list-style: none;
}

.artifact-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: stretch;
  min-height: 88px;
  padding: 10px;
  background: #fbfcf9;
  border: 2px solid var(--line);
  border-radius: 8px;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.artifact-card[data-selected="true"] {
  border-color: var(--focus);
  background: #f5f0ff;
  transform: translateX(3px);
}

.artifact-card[data-state="exact"] {
  border-color: #2e9d54;
  background: #eef9f1;
}

.artifact-card[data-state="near"] {
  border-color: #c99418;
  background: #fff8df;
}

.artifact-card[data-state="off"] {
  border-color: #d95b51;
  background: #fff1ef;
}

.artifact-main {
  display: grid;
  grid-template-columns: 42px 68px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  width: 100%;
  min-height: 64px;
  padding: 0;
  color: var(--ink);
  background: transparent;
  border: 0;
  text-align: left;
}

.slot {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: #ffffff;
  background: #25222a;
  border-radius: 50%;
  font-weight: 900;
}

.artifact-art {
  display: inline-grid;
  place-items: center;
  width: 64px;
  height: 64px;
  background: color-mix(in srgb, var(--artifact-hue), #ffffff 78%);
  border: 2px solid color-mix(in srgb, var(--artifact-hue), #25222a 20%);
  border-radius: 8px;
}

.artifact-art svg {
  width: 48px;
  height: 48px;
  fill: none;
  stroke: var(--artifact-hue);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.artifact-copy {
  display: grid;
  min-width: 0;
}

.artifact-copy strong {
  overflow-wrap: anywhere;
  font-size: 1rem;
}

.artifact-copy small {
  color: var(--muted);
  font-size: 0.82rem;
}

.card-controls {
  display: grid;
  grid-template-columns: 42px;
  gap: 5px;
  align-items: center;
  justify-items: center;
}

.card-controls button {
  width: 42px;
  height: 30px;
  color: var(--ink);
  background: #ffffff;
  border: 2px solid #25222a;
  border-radius: 8px;
  font-weight: 900;
}

.card-controls span {
  min-width: 42px;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 800;
  text-align: center;
  text-transform: uppercase;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.control-hint {
  min-height: 48px;
  margin: 14px 0 0;
  padding: 10px 12px;
  color: var(--muted);
  background: #f7f8f4;
  border: 2px dashed var(--line);
  border-radius: 8px;
}

.control-hint[data-tone="success"] {
  color: #1f6f3e;
  border-color: #8cc7a0;
  background: #eef9f1;
}

.control-hint[data-tone="warning"] {
  color: #8a4e00;
  border-color: #d8b160;
  background: #fff8df;
}

.primary-button,
.ghost-button {
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 900;
}

.primary-button {
  color: #ffffff;
  background: var(--accent);
  border: 2px solid #25222a;
  box-shadow: 3px 3px 0 #25222a;
}

.ghost-button {
  color: var(--ink);
  background: #ffffff;
  border: 2px solid #25222a;
}

.artifact-main:focus-visible,
.card-controls button:focus-visible,
.primary-button:focus-visible,
.ghost-button:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.summary {
  margin-top: 18px;
  padding: 22px;
}

.summary[hidden] {
  display: none;
}

.summary textarea {
  width: 100%;
  margin: 8px 0 14px;
  padding: 12px;
  color: var(--ink);
  background: #fbfcf9;
  border: 2px solid #25222a;
  border-radius: 8px;
  resize: vertical;
}

@media (max-width: 820px) {
  .shell {
    width: min(100% - 22px, 680px);
    padding-top: 14px;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
    gap: 12px;
  }

  .score-strip {
    text-align: left;
  }

  .game-layout {
    grid-template-columns: 1fr;
  }

  .case-panel {
    position: static;
  }
}

@media (max-width: 520px) {
  .case-panel,
  .timeline-panel,
  .summary {
    box-shadow: 3px 3px 0 rgba(37, 34, 42, 0.12);
  }

  .artifact-card {
    grid-template-columns: 1fr;
  }

  .artifact-main {
    grid-template-columns: 34px 56px minmax(0, 1fr);
    gap: 8px;
  }

  .slot {
    width: 32px;
    height: 32px;
  }

  .artifact-art {
    width: 56px;
    height: 56px;
  }

  .artifact-art svg {
    width: 42px;
    height: 42px;
  }

  .card-controls {
    grid-template-columns: 1fr auto 1fr;
  }

  .card-controls button {
    width: 100%;
    min-height: 44px;
  }

  .actions {
    display: grid;
  }

  .challenge-card .ghost-button {
    justify-self: stretch;
  }

  .control-hint {
    min-height: 64px;
  }
}