:root {
  color-scheme: dark;
  --ink: #15152a;
  --blueprint: #0b2431;
  --blueprint-light: #123747;
  --paper: #fff5df;
  --paper-muted: #9baba9;
  --line: #4f6970;
  --brass: #ffd166;
  --brass-dark: #96712a;
  --signal: #ff5d5d;
  --mint: #58d6a9;
  --danger: #ff5d5d;
  --blue: #4f7cff;
  --butter: #ffd166;
  --coral: #ff5d5d;
  --lilac: #b695ff;
  --display: Impact, Haettenschweiler, "Arial Narrow Bold", "Franklin Gothic Condensed", sans-serif;
  --body: "Arial Rounded MT Bold", "Avenir Next Rounded", "Trebuchet MS", ui-rounded, system-ui, sans-serif;
  --utility: "Courier New", Courier, monospace;
  --page-width: 1440px;
  --border: 1px solid rgba(220, 228, 223, 0.28);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 0;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 0;
  min-height: 100vh;
  overflow-x: clip;
  overflow-y: auto;
  background:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    var(--blueprint);
  background-size: 32px 32px;
  color: var(--paper);
  font-family: var(--body);
  line-height: 1.5;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
  font: inherit;
}

button:focus-visible,
a:focus-visible {
  outline: 4px solid var(--blue);
  outline-offset: 4px;
  box-shadow: 0 0 0 4px var(--paper), 0 0 0 8px var(--ink);
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  transform: translateY(-160%);
  background: var(--paper);
  color: var(--ink);
  font: 700 0.8rem/1 var(--utility);
  text-transform: uppercase;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  width: min(calc(100% - 40px), var(--page-width));
  min-height: 88px;
  margin: 0 auto;
  border-bottom: var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--paper);
  text-decoration: none;
}

.wordmark svg {
  width: 42px;
  height: 42px;
  fill: none;
  stroke: var(--brass);
  stroke-width: 3;
}

.wordmark span {
  display: grid;
  line-height: 1;
}

.wordmark strong {
  font: 800 1.05rem/1 var(--display);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.wordmark small {
  margin-top: 6px;
  color: var(--paper-muted);
  font: 0.58rem/1 var(--utility);
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.header-controls {
  display: flex;
  align-items: stretch;
  border-right: var(--border);
}

.utility-button {
  min-height: 42px;
  padding: 8px 14px;
  border: 3px solid var(--ink);
  border-radius: 0.55rem;
  background: var(--butter);
  color: var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  cursor: pointer;
  font: 700 0.69rem/1 var(--utility);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 160ms ease, background 160ms ease;
}

.utility-button:hover {
  background: var(--paper);
  color: var(--ink);
  transform: translate(-1px, -1px);
}

.sound-icon {
  display: inline-block;
  width: 25px;
  color: var(--brass);
}

main {
  width: min(calc(100% - 40px), var(--page-width));
  margin: 0 auto;
}

.intro {
  min-height: 310px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  align-items: end;
  gap: 6vw;
  padding: 60px 0 46px;
}

.eyebrow,
.stage-kicker,
.progress-heading,
.event-ledger > p,
.board-coordinate,
.footnote {
  margin: 0;
  color: var(--mint);
  font: 700 0.67rem/1.3 var(--utility);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  width: min(calc(100% - 40px), var(--page-width));
  margin: 0 auto;
  padding: 1rem 0 2rem;
  color: var(--paper-muted);
  font: 0.72rem/1.45 var(--utility);
}

.site-footer p {
  margin: 0;
}

.tinychaos-credit {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tinychaos-credit a {
  color: var(--paper);
  font-weight: 900;
}

h1 {
  max-width: 940px;
  margin: 18px 0 0;
  color: var(--paper);
  font: 800 clamp(3.5rem, 8.5vw, 8.4rem)/0.78 var(--display);
  letter-spacing: -0.065em;
  text-transform: uppercase;
}

h1 em {
  color: var(--brass);
  font-style: normal;
  white-space: nowrap;
}

.intro-instructions {
  max-width: 460px;
  padding-left: 22px;
  border-left: 3px solid var(--signal);
  color: var(--paper);
  font-size: clamp(1rem, 1.4vw, 1.2rem);
}

.intro-instructions p {
  margin: 0;
}

.keyboard-hint {
  margin-top: 18px !important;
  color: var(--paper-muted);
  font: 0.7rem/1.6 var(--utility);
}

kbd {
  padding: 2px 5px;
  border: 1px solid var(--line);
  background: var(--ink);
  color: var(--brass);
  font: inherit;
}

.puzzle-shell {
  position: relative;
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  border: var(--border);
  background: rgba(4, 18, 25, 0.5);
  box-shadow: 18px 18px 0 rgba(3, 12, 17, 0.26);
}

.puzzle-shell::before {
  content: "AUTHORIZED PERSONNEL + CURIOUS VISITORS";
  position: absolute;
  top: 0;
  right: 0;
  z-index: 20;
  padding: 7px 12px;
  background: var(--signal);
  color: var(--ink);
  font: 800 0.58rem/1 var(--utility);
  letter-spacing: 0.11em;
}

.progress-rail {
  min-width: 0;
  padding: 26px 22px;
  border-right: var(--border);
  background: rgba(7, 23, 31, 0.7);
}

.progress-heading {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding-bottom: 18px;
  border-bottom: var(--border);
}

.progress-heading strong {
  color: var(--brass);
}

.stage-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.stage-list li {
  position: relative;
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 10px;
  align-items: center;
  min-height: 86px;
  border-bottom: var(--border);
  color: var(--line);
}

.stage-list li::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: var(--brass);
  transition: transform 420ms ease;
}

.stage-list li.is-current,
.stage-list li.is-complete {
  color: var(--paper);
}

.stage-list li.is-current::after,
.stage-list li.is-complete::after {
  transform: scaleX(1);
}

.stage-list li.is-complete::after {
  background: var(--mint);
}

.stage-index {
  color: currentColor;
  font: 700 1.1rem/1 var(--display);
}

.stage-list b,
.stage-list small {
  display: block;
}

.stage-list b {
  font: 700 0.77rem/1.2 var(--utility);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.stage-list small {
  margin-top: 6px;
  color: var(--paper-muted);
  font: 0.64rem/1.2 var(--utility);
}

.stage-list li.is-complete .stage-index {
  color: var(--mint);
}

.stage-list li.is-complete .stage-index::before {
  content: "✓";
}

.stage-list li.is-complete .stage-index {
  font-size: 0;
}

.stage-list li.is-complete .stage-index::before {
  font-size: 1rem;
}

.event-ledger {
  margin-top: 32px;
}

.event-ledger ol {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.event-ledger li {
  position: relative;
  padding: 10px 0 10px 14px;
  border-bottom: 1px dotted rgba(220, 228, 223, 0.18);
  color: var(--paper-muted);
  font: 0.67rem/1.45 var(--utility);
}

.event-ledger li::before {
  content: "+";
  position: absolute;
  top: 10px;
  left: 0;
  color: var(--signal);
}

.event-ledger li:first-child {
  color: var(--paper);
}

.puzzle-panel {
  min-width: 0;
}

.stage-header,
.stage-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  padding: 24px 28px;
}

.stage-header {
  min-height: 104px;
  border-bottom: var(--border);
}

.stage-kicker {
  color: var(--signal);
}

h2 {
  margin: 7px 0 0;
  font: 700 clamp(1.55rem, 3vw, 2.45rem)/1 var(--display);
  letter-spacing: -0.035em;
  text-transform: uppercase;
}

.attempt-meter {
  min-width: 110px;
  color: var(--paper-muted);
  font: 700 0.64rem/1 var(--utility);
  text-align: right;
  text-transform: uppercase;
}

.attempt-pips {
  display: flex;
  justify-content: flex-end;
  gap: 5px;
  margin-top: 10px;
}

.attempt-pips i {
  width: 38px;
  height: 5px;
  border: 1px solid var(--line);
}

.attempt-pips i.is-filled {
  border-color: var(--brass);
  background: var(--brass);
}

.puzzle-board {
  position: relative;
  min-height: clamp(510px, 52vw, 700px);
  overflow: hidden;
  isolation: isolate;
  background:
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(136, 199, 181, 0.055) 39px 40px),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(136, 199, 181, 0.055) 39px 40px),
    #0d2c39;
}

.puzzle-board::after {
  content: "";
  position: absolute;
  inset: 14px;
  z-index: 30;
  border: 1px solid rgba(136, 199, 181, 0.18);
  pointer-events: none;
}

.board-lines {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  fill: none;
  stroke: rgba(136, 199, 181, 0.16);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.board-lines .dash {
  stroke: rgba(231, 189, 90, 0.3);
  stroke-dasharray: 8 12;
}

.board-lines circle {
  fill: var(--signal);
  stroke: none;
}

.board-coordinate {
  position: absolute;
  top: 30px;
  left: 34px;
  z-index: 2;
  color: rgba(220, 228, 223, 0.42);
}

.door-mount {
  position: absolute;
  z-index: 5;
  top: 8%;
  right: 8%;
  width: 34%;
  height: 78%;
  min-width: 260px;
  transform-origin: center;
}

.door-frame {
  position: relative;
  width: 100%;
  height: 100%;
  padding: 18px;
  border: 7px solid #48606a;
  border-bottom-width: 12px;
  background: #07171f;
  box-shadow: 13px 15px 0 rgba(0, 0, 0, 0.26);
  perspective: 900px;
}

.door-shadow {
  position: absolute;
  inset: 18px;
  background: #061118;
}

.door-panel {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  transform-origin: left center;
  background: #274d5a;
  box-shadow: inset 0 0 0 1px #65818a;
  transition: transform 1.15s cubic-bezier(0.2, 0.78, 0.2, 1);
  transform-style: preserve-3d;
}

.door-panel svg {
  width: 100%;
  height: 100%;
}

.door-fill {
  fill: #315965;
  stroke: #799097;
  stroke-width: 2;
}

.door-inset {
  fill: #264b56;
  stroke: #7b9197;
  stroke-width: 2;
}

.door-mark {
  stroke: rgba(220, 228, 223, 0.32);
  stroke-width: 5;
}

.door-rivet {
  fill: var(--brass-dark);
}

.door-number {
  position: absolute;
  top: 16%;
  right: 15%;
  color: rgba(220, 228, 223, 0.24);
  font: 800 clamp(2rem, 4vw, 4.5rem)/1 var(--display);
}

.door-handle {
  position: absolute;
  right: 10%;
  top: 49%;
  width: 8px;
  height: 22%;
  border: 2px solid #b3a26f;
  background: #6f683f;
  box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.2);
}

.drawer-unit {
  position: absolute;
  z-index: 6;
  top: 40%;
  left: 6%;
  width: 26%;
  min-width: 215px;
  color: var(--paper-muted);
}

.drawer-label {
  display: block;
  margin-bottom: 8px;
  font: 700 0.58rem/1 var(--utility);
  letter-spacing: 0.1em;
}

.drawer-body {
  position: relative;
  height: 150px;
  border: 7px solid #53676d;
  background: #07171f;
  perspective: 700px;
}

.drawer-front {
  position: absolute;
  inset: 8px;
  z-index: 2;
  transform-origin: center bottom;
  border: 2px solid #849395;
  background: #3f5e63;
  transition: transform 660ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.drawer-pull {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 42%;
  height: 16px;
  transform: translate(-50%, -50%);
  border: 3px solid #9da8a5;
  border-bottom-width: 7px;
}

.drawer-code {
  position: absolute;
  right: 10px;
  bottom: 7px;
  font: 700 0.6rem/1 var(--utility);
}

.drawer-key {
  position: absolute;
  z-index: 1;
  top: 34px;
  left: 12%;
  width: 76%;
  fill: none;
  stroke: var(--brass);
  stroke-width: 8;
  opacity: 0;
  transform: translateY(30px) rotate(-8deg);
  transition: opacity 380ms ease 220ms, transform 580ms ease 180ms;
}

.small-door {
  position: absolute;
  z-index: 6;
  right: 3.5%;
  bottom: 5%;
  width: 17%;
  height: 30%;
  transform: translateY(130%) scale(0.8);
  border: 8px solid #51666e;
  background: #284c57;
  box-shadow: inset 0 0 0 2px #71878c, 8px 8px 0 rgba(0, 0, 0, 0.2);
  opacity: 0;
  transition: transform 660ms cubic-bezier(0.18, 0.9, 0.2, 1.15), opacity 220ms ease;
}

.small-door::before,
.small-door::after {
  content: "";
  position: absolute;
  right: 15%;
  left: 15%;
  height: 27%;
  border: 1px solid #779096;
}

.small-door::before {
  top: 17%;
}

.small-door::after {
  bottom: 12%;
}

.small-door span {
  position: absolute;
  z-index: 2;
  top: 6px;
  left: 8px;
  color: var(--paper-muted);
  font: 0.48rem/1 var(--utility);
}

.small-door i {
  position: absolute;
  z-index: 3;
  right: 10%;
  top: 52%;
  width: 6px;
  height: 18%;
  background: var(--brass-dark);
}

.puzzle-board[data-stage="3"] .small-door,
.puzzle-board.small-door-appears .small-door {
  transform: translateY(0) scale(1);
  opacity: 1;
}

.puzzle-board.drawer-open .drawer-front {
  transform: rotateX(-62deg) translateY(50px);
}

.puzzle-board.drawer-open .drawer-key {
  opacity: 1;
  transform: translateY(0) rotate(-8deg);
}

.lock-target {
  position: absolute;
  z-index: 9;
  width: clamp(62px, 7.3vw, 96px);
  aspect-ratio: 0.8;
  filter: drop-shadow(7px 9px 0 rgba(0, 0, 0, 0.24));
  transition: top 500ms ease, right 500ms ease, bottom 500ms ease, left 500ms ease;
}

.puzzle-board[data-stage="1"] .lock-target {
  top: 42%;
  right: 19%;
}

.puzzle-board[data-stage="2"] .lock-target {
  top: 49%;
  left: 17%;
}

.puzzle-board[data-stage="3"] .lock-target {
  right: 7.5%;
  bottom: 12%;
}

.lock-target svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.shackle {
  fill: none;
  stroke: #b69a58;
  stroke-width: 15;
}

.lock-body {
  fill: var(--brass);
  stroke: #5f481d;
  stroke-width: 4;
}

.lock-rivet {
  fill: #785b24;
}

.keyhole {
  fill: var(--ink);
}

.lock-label {
  position: absolute;
  top: 99%;
  left: 50%;
  padding: 4px 6px;
  transform: translateX(-50%);
  background: var(--paper);
  color: var(--ink);
  font: 700 0.53rem/1 var(--utility);
  white-space: nowrap;
}

.puzzle-board[data-stage="2"] .lock-body {
  fill: var(--mint);
}

.puzzle-board[data-stage="2"] .shackle {
  stroke: #669988;
}

.puzzle-board[data-stage="3"] .lock-body {
  fill: var(--signal);
}

.puzzle-board[data-stage="3"] .shackle {
  stroke: #ba4d2c;
}

.key-token {
  --drag-x: 0px;
  --drag-y: 0px;
  position: absolute;
  z-index: 12;
  left: 7%;
  bottom: 9%;
  width: clamp(185px, 26vw, 320px);
  padding: 18px 8px 12px;
  transform: translate3d(var(--drag-x), var(--drag-y), 0);
  border: 0;
  background: transparent;
  color: var(--brass);
  cursor: grab;
  touch-action: none;
  user-select: none;
  transition: transform 420ms cubic-bezier(0.2, 0.8, 0.2, 1), opacity 180ms ease;
}

.key-token:hover .key-art {
  filter: drop-shadow(0 0 10px rgba(231, 189, 90, 0.25));
}

.key-token.is-dragging {
  z-index: 20;
  cursor: grabbing;
  transition: none;
}

.key-token[aria-disabled="true"] {
  cursor: wait;
}

.key-tag {
  position: absolute;
  top: 0;
  left: 34%;
  padding: 4px 8px;
  border: 1px solid currentColor;
  background: var(--blueprint);
  font: 700 0.52rem/1 var(--utility);
  letter-spacing: 0.08em;
}

.key-art {
  display: block;
  width: 100%;
  overflow: visible;
  fill: none;
  stroke: currentColor;
  stroke-linecap: square;
  stroke-linejoin: bevel;
  stroke-width: 12;
  transition: transform 300ms ease, filter 200ms ease;
}

.key-shape {
  display: none;
}

.puzzle-board[data-stage="1"] .key-one,
.puzzle-board[data-stage="2"] .key-two,
.puzzle-board[data-stage="3"] .key-three {
  display: block;
}

.puzzle-board[data-stage="2"] .key-token {
  color: var(--mint);
}

.puzzle-board[data-stage="3"] .key-token {
  color: var(--signal);
}

.key-inner-lock {
  fill: var(--ink);
  stroke-width: 2;
  opacity: 0.3;
}

.key-grip {
  display: inline-block;
  margin-top: -6px;
  padding: 4px 8px;
  border-bottom: 1px solid currentColor;
  color: var(--paper-muted);
  font: 0.55rem/1 var(--utility);
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.duplicate-key {
  position: absolute;
  z-index: 11;
  left: 8%;
  bottom: 13%;
  width: 190px;
  color: var(--signal);
  opacity: 0;
  pointer-events: none;
}

.duplicate-key svg {
  fill: none;
  stroke: currentColor;
  stroke-width: 8;
}

.tiny-thief {
  position: absolute;
  z-index: 21;
  right: -70px;
  bottom: 5%;
  width: 48px;
  height: 84px;
  opacity: 0;
  color: var(--paper);
}

.thief-head {
  position: absolute;
  z-index: 2;
  top: 0;
  left: 7px;
  width: 36px;
  height: 31px;
  border: 2px solid currentColor;
  border-radius: 50%;
  background: var(--ink);
  font: 700 0.63rem/26px var(--utility);
  text-align: center;
}

.thief-body {
  position: absolute;
  top: 28px;
  left: 15px;
  width: 21px;
  height: 47px;
  border: 2px solid currentColor;
  background: var(--signal);
}

.thief-arm {
  position: absolute;
  top: 38px;
  left: -4px;
  width: 34px;
  height: 3px;
  transform: rotate(-22deg);
  background: currentColor;
}

.hidden-eye {
  position: absolute;
  z-index: 1;
  top: 21%;
  left: 4%;
  width: 44px;
  height: 20px;
  transform: rotate(-8deg);
  border: 1px solid rgba(220, 228, 223, 0.24);
  border-radius: 50%;
}

.hidden-eye::before,
.hidden-eye::after {
  content: "";
  position: absolute;
  top: 8px;
  width: 16px;
  border-top: 1px solid rgba(220, 228, 223, 0.2);
}

.hidden-eye::before {
  right: 100%;
}

.hidden-eye::after {
  left: 100%;
}

.hidden-eye i {
  position: absolute;
  top: 5px;
  left: 17px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--signal);
}

.paperclip {
  position: absolute;
  z-index: 1;
  right: 45%;
  bottom: 5%;
  width: 27px;
  fill: none;
  stroke: rgba(220, 228, 223, 0.19);
  stroke-width: 3;
}

.event-banner {
  position: absolute;
  z-index: 25;
  top: 22px;
  left: 50%;
  width: min(440px, calc(100% - 48px));
  padding: 13px 16px;
  transform: translate(-50%, -140%);
  border-left: 5px solid var(--signal);
  background: var(--paper);
  color: var(--ink);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.24);
  opacity: 0;
  transition: transform 260ms ease, opacity 160ms ease;
  pointer-events: none;
}

.event-banner span,
.event-banner strong {
  display: block;
}

.event-banner span {
  color: #655f55;
  font: 700 0.52rem/1 var(--utility);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.event-banner strong {
  margin-top: 5px;
  font: 800 clamp(0.9rem, 2vw, 1.15rem)/1.2 var(--display);
  text-transform: uppercase;
}

.puzzle-board.event-active .event-banner {
  transform: translate(-50%, 0);
  opacity: 1;
}

.stage-footer {
  min-height: 96px;
  border-top: var(--border);
}

.stage-footer p {
  max-width: 520px;
  margin: 0;
  color: var(--paper-muted);
  font-size: 0.9rem;
}

.status-line {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 9px;
  max-width: 420px;
  color: var(--paper);
  font: 0.63rem/1.4 var(--utility);
  text-align: right;
}

.status-light {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(136, 199, 181, 0.12);
}

.puzzle-board.is-busy + .stage-footer .status-light,
.status-light.is-busy {
  background: var(--signal);
}

.footnote {
  padding: 24px 0 70px;
  color: var(--paper-muted);
  text-align: right;
}

/* Final reveal */
.final-reveal {
  position: absolute;
  z-index: 3;
  top: 6%;
  right: 6%;
  width: 39%;
  height: 82%;
  overflow: hidden;
  border: 10px solid #07171f;
  background: var(--signal);
  opacity: 0;
  transition: opacity 240ms ease;
}

.inner-door {
  position: absolute;
  inset: 7%;
  border: 4px solid var(--ink);
  background:
    linear-gradient(90deg, transparent 48%, rgba(7, 23, 31, 0.2) 48% 52%, transparent 52%),
    #dce4df;
}

.inner-door::before,
.inner-door::after {
  content: "";
  position: absolute;
  left: 12%;
  right: 12%;
  height: 25%;
  border: 3px solid var(--ink);
}

.inner-door::before {
  top: 10%;
}

.inner-door::after {
  bottom: 10%;
}

.inner-lock {
  position: absolute;
  z-index: 3;
  top: 48%;
  right: 11%;
  width: 28px;
  height: 34px;
  border: 3px solid var(--ink);
  background: var(--brass);
}

.inner-lock::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 5px;
  width: 12px;
  height: 13px;
  border: 3px solid var(--ink);
  border-bottom: 0;
  border-radius: 7px 7px 0 0;
}

.final-stamp {
  position: absolute;
  z-index: 4;
  top: 11%;
  right: 10%;
  margin: 0;
  transform: rotate(8deg);
  color: var(--signal);
  font: 900 0.85rem/0.9 var(--utility);
  text-align: center;
}

.final-copy {
  position: absolute;
  z-index: 5;
  right: 10%;
  bottom: 12%;
  left: 10%;
  padding: 14px;
  border: 3px solid var(--ink);
  background: var(--brass);
  color: var(--ink);
  box-shadow: 7px 7px 0 var(--ink);
}

.final-copy span,
.final-copy strong {
  display: block;
}

.final-copy span {
  font: 700 0.55rem/1 var(--utility);
  text-transform: uppercase;
}

.final-copy strong {
  margin-top: 7px;
  font: 800 clamp(0.9rem, 2.2vw, 1.45rem)/0.98 var(--display);
  text-transform: uppercase;
}

.final-reset {
  margin-top: 13px;
  padding: 8px 10px;
  border: 2px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  font: 700 0.58rem/1 var(--utility);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.puzzle-board.is-complete .final-reveal {
  opacity: 1;
}

.puzzle-board.is-complete .door-panel {
  transform: rotateY(-108deg);
}

.puzzle-board.is-complete .lock-target,
.puzzle-board.is-complete .key-token {
  opacity: 0;
  pointer-events: none;
}

/* Event choreography */
@keyframes lockRelocation {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(-85px, -45px) rotate(-9deg); }
  60% { transform: translate(48px, 24px) rotate(5deg); }
}

@keyframes doorShift {
  0%, 100% { translate: 0 0; }
  35% { translate: -22% 3%; }
  70% { translate: 8% -2%; }
}

@keyframes rejectLock {
  0%, 100% { transform: translateX(0); filter: drop-shadow(7px 9px 0 rgba(0, 0, 0, 0.24)); }
  20%, 60% { transform: translateX(-12px) rotate(-4deg); filter: drop-shadow(0 0 12px var(--danger)); }
  40%, 80% { transform: translateX(12px) rotate(4deg); }
}

@keyframes duplicateArrival {
  0% { opacity: 0; transform: translate(0, 0) rotate(0deg); }
  30% { opacity: 0.8; }
  65% { opacity: 0.8; transform: translate(34px, -96px) rotate(-22deg); }
  100% { opacity: 0; transform: translate(74px, -62px) rotate(12deg); }
}

@keyframes doorRotation {
  0%, 100% { transform: rotate(0deg); }
  45% { transform: rotate(8deg); }
  70% { transform: rotate(-3deg); }
}

@keyframes thiefRun {
  0% { right: -70px; opacity: 0; transform: rotate(5deg); }
  15% { opacity: 1; }
  48% { right: 34%; transform: rotate(-4deg); }
  76% { right: 62%; opacity: 1; transform: rotate(4deg); }
  100% { right: 110%; opacity: 0; }
}

@keyframes stolenKey {
  0%, 30% { opacity: 1; }
  52%, 72% { opacity: 0; }
  100% { opacity: 1; }
}

@keyframes selfUnlock {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  35%, 70% { opacity: 1; transform: scale(1.5); }
}

.puzzle-board.event-lock-moves .lock-target {
  animation: lockRelocation 1.05s cubic-bezier(0.3, 0.8, 0.3, 1);
}

.puzzle-board.event-key-bends .key-art {
  transform: skewY(14deg) scaleX(0.84);
}

.puzzle-board.event-door-shifts .door-mount {
  animation: doorShift 1.05s cubic-bezier(0.3, 0.8, 0.3, 1);
}

.puzzle-board.event-lock-rejects .lock-target {
  animation: rejectLock 660ms ease;
}

.puzzle-board.event-key-duplicates .duplicate-key {
  animation: duplicateArrival 1.2s ease-out;
}

.puzzle-board.event-door-rotates .door-panel {
  animation: doorRotation 1.15s ease-in-out;
}

.puzzle-board.event-key-self-unlocks .key-inner-lock {
  animation: selfUnlock 980ms ease;
  transform-origin: center;
}

.puzzle-board.event-thief-steals .tiny-thief {
  animation: thiefRun 1.45s linear;
}

.puzzle-board.event-thief-steals .key-token {
  animation: stolenKey 1.45s ease;
}

@media (max-width: 1000px) {
  .puzzle-shell {
    grid-template-columns: 1fr;
  }

  .progress-rail {
    padding: 18px 22px 12px;
    border-right: 0;
    border-bottom: var(--border);
  }

  .progress-heading {
    padding-bottom: 12px;
  }

  .stage-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .stage-list li {
    min-height: 68px;
    border-right: var(--border);
    border-bottom: 0;
  }

  .stage-list li:last-child {
    border-right: 0;
  }

  .event-ledger {
    display: none;
  }

  .puzzle-board {
    min-height: 620px;
  }
}

@media (max-width: 720px) {
  .site-header,
  main {
    width: min(calc(100% - 24px), var(--page-width));
  }

  .site-header {
    min-height: 70px;
  }

  .wordmark svg {
    width: 34px;
    height: 34px;
  }

  .wordmark small,
  .control-label {
    display: none;
  }

  .utility-button {
    min-width: 44px;
    padding: 8px 10px;
    font-size: 1rem;
  }

  .sound-icon {
    width: auto;
    font-size: 0.68rem;
  }

  .intro {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 34px;
    padding: 52px 0 38px;
  }

  h1 {
    font-size: clamp(3.1rem, 16vw, 5.4rem);
  }

  .intro-instructions {
    font-size: 0.95rem;
  }

  .puzzle-shell::before {
    display: none;
  }

  .progress-rail {
    padding: 14px;
  }

  .stage-list li {
    grid-template-columns: 22px 1fr;
    gap: 4px;
    min-height: 60px;
    padding: 5px;
  }

  .stage-list b {
    font-size: 0.58rem;
  }

  .stage-list small {
    display: none;
  }

  .stage-header,
  .stage-footer {
    padding: 18px;
  }

  .stage-header {
    min-height: 88px;
  }

  .attempt-meter {
    min-width: 80px;
  }

  .attempt-pips i {
    width: 28px;
  }

  .puzzle-board {
    min-height: 580px;
  }

  .board-coordinate {
    top: 25px;
    left: 28px;
    font-size: 0.52rem;
  }

  .door-mount {
    top: 8%;
    right: 4%;
    width: 43%;
    min-width: 0;
    height: 65%;
  }

  .door-frame {
    padding: 9px;
    border-width: 5px;
    border-bottom-width: 8px;
  }

  .drawer-unit {
    top: 35%;
    left: 4%;
    width: 36%;
    min-width: 0;
  }

  .drawer-body {
    height: 120px;
  }

  .drawer-label {
    max-width: 150px;
    font-size: 0.47rem;
  }

  .puzzle-board[data-stage="1"] .lock-target {
    top: 37%;
    right: 15%;
  }

  .puzzle-board[data-stage="2"] .lock-target {
    top: 44%;
    left: 16%;
  }

  .puzzle-board[data-stage="3"] .lock-target {
    right: 8%;
    bottom: 9%;
  }

  .key-token {
    left: 3%;
    bottom: 7%;
    width: clamp(170px, 52vw, 235px);
  }

  .small-door {
    right: 3%;
    bottom: 3%;
    width: 25%;
    height: 28%;
  }

  .paperclip {
    display: none;
  }

  .stage-footer {
    min-height: 115px;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .status-line {
    justify-content: flex-start;
    text-align: left;
  }

  .final-reveal {
    top: 5%;
    right: 2%;
    width: 51%;
    height: 70%;
  }

  .final-copy {
    right: 7%;
    bottom: 8%;
    left: 7%;
    padding: 10px;
  }

  .final-copy strong {
    font-size: 0.82rem;
  }

  .final-reset {
    margin-top: 9px;
    padding: 7px;
  }
}

@media (max-width: 440px) {
  .puzzle-board {
    min-height: 540px;
  }

  .door-mount {
    top: 10%;
    height: 56%;
  }

  .drawer-unit {
    top: 38%;
  }

  .key-token {
    bottom: 4%;
  }

  .hidden-eye {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (forced-colors: active) {
  .puzzle-board,
  .door-panel,
  .drawer-front,
  .small-door {
    border: 2px solid CanvasText;
  }

  .status-light {
    border: 2px solid CanvasText;
  }
}