:root {
  --ink: #1c1915;
  --muted: #6d645b;
  --line: #e4ddd2;
  --paper: #ffffff;
  --red: #c23b33;
  --red-deep: #8d241e;
  --page: #f3f1ee;
  --square: 220px;
  color-scheme: light;
}

* { box-sizing: border-box; }

html, body {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
}

body {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  color: var(--ink);
  background: var(--page) url("texture-fond.png") center / cover no-repeat;
}

button { font: inherit; }

[hidden] { display: none !important; }

button:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

#timer-block {
  position: fixed;
  left: 0;
  right: 0;
  top: env(safe-area-inset-top);
  z-index: 30;
  height: 13px;
  pointer-events: none;
  background: rgba(28, 25, 21, 0.06);
}

.timer-bar {
  position: relative;
  height: 100%;
  width: 100%;
}

.timer-fill {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  padding-right: 8px;
  overflow: hidden;
  background: linear-gradient(90deg, var(--red-deep), var(--red));
}

.timer-value {
  flex: none;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 11px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: #ffffff;
  white-space: nowrap;
}

#load-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  background: #ffffff;
  transition: opacity 0.45s ease, visibility 0.45s ease;
}

#load-overlay.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.load-card {
  width: min(320px, calc(100vw - 40px));
  padding: 16px 18px 14px;
  border: 1px solid rgba(28, 25, 21, 0.1);
  border-radius: 12px;
  background: var(--paper);
  box-shadow: 0 12px 36px rgba(28, 25, 21, 0.12);
}

.load-text {
  margin: 0 0 12px;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 15px;
  font-weight: 600;
}

.load-bar {
  height: 7px;
  border-radius: 999px;
  background: var(--line);
  overflow: hidden;
}

.load-bar-fill {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--red-deep), var(--red));
  transition: width 0.28s ease-out;
}

.intro-modal {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  place-items: center;
  padding: 20px;
  background: transparent;
  pointer-events: none;
}

#finish-modal { background: rgba(255, 255, 255, 0.72); }

.intro-card {
  width: min(440px, 100%);
  max-height: calc(100dvh - 40px);
  overflow: auto;
  padding: 22px 22px 18px;
  border: 1px solid rgba(28, 25, 21, 0.1);
  border-radius: 14px;
  background: var(--paper);
  box-shadow: 0 16px 48px rgba(28, 25, 21, 0.14);
  pointer-events: auto;
}

.intro-card h1 {
  margin: 0;
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.lead {
  margin: 10px 0 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 13px;
  line-height: 1.45;
  color: var(--muted);
}

.field-label {
  margin: 14px 0 6px;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.choice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.choice-grid button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  color: var(--muted);
  padding: 8px 8px;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.25;
  cursor: pointer;
}

.choice-grid button[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: white;
}

.mode-switch {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: white;
}

.pace-switch { grid-template-columns: 1fr 1fr 1.2fr; }

.mode-switch button {
  border: 0;
  background: white;
  color: var(--muted);
  padding: 8px 8px;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.25;
  cursor: pointer;
}

.pace-switch button {
  min-height: 36px;
  font-size: 12px;
}

.mode-switch button + button { border-left: 1px solid var(--line); }

.mode-switch button[aria-pressed="true"] {
  background: var(--ink);
  color: white;
}

.mode-note {
  margin: 8px 0 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 12px;
  line-height: 1.4;
  color: var(--muted);
}

.btn-primary {
  border: 0;
  border-radius: 8px;
  background: linear-gradient(180deg, var(--red), var(--red-deep));
  color: white;
  padding: 10px 14px;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(28, 25, 21, 0.15);
}

.btn-primary:hover { filter: brightness(1.05); }

.intro-card .btn-primary {
  display: block;
  width: 100%;
  margin-top: 16px;
}

.btn-block {
  display: block;
  width: 100%;
  margin-top: 12px;
}

#play {
  position: fixed;
  left: 0;
  right: 0;
  top: calc(13px + env(safe-area-inset-top));
  bottom: 0;
}

#chrome {
  position: absolute;
  top: 14px;
  left: 18px;
  z-index: 25;
  width: fit-content;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  box-shadow: none;
}

.round-meta {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red);
}

.round-prompt {
  margin: 6px 0 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.score-history-wrap {
  position: absolute;
  top: 14px;
  right: 18px;
  z-index: 25;
  width: 210px;
  max-height: calc(100% - 28px);
  overflow: auto;
  padding: 8px 10px;
  border: 1px solid rgba(28, 25, 21, 0.08);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 8px 22px rgba(28, 25, 21, 0.12);
}

.score-history-heading {
  margin: 0 0 4px;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.score-history {
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 12px;
  line-height: 1.35;
  color: var(--ink);
}

.score-history li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 2px 0;
}

.score-history .pair-name { min-width: 0; }

.score-history .score-num {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  white-space: nowrap;
}

.score-history .is-miss { color: var(--red-deep); }

.score-history-total {
  margin-top: 4px;
  padding-top: 4px;
  border-top: 1px solid rgba(28, 25, 21, 0.18);
  font-weight: 700;
}

#stage {
  position: absolute;
  inset: 0;
  padding: 296px 0 48px;
}

.compare {
  height: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr) auto;
}

#shelf-ref { grid-column: 1; grid-row: 1; }
#shelf-target { grid-column: 2; grid-row: 1; }
#meta-ref { grid-column: 1; grid-row: 2; }
#meta-target { grid-column: 2; grid-row: 2; }

.shelf {
  position: relative;
  min-width: 0;
  min-height: 0;
}

.ground {
  position: absolute;
  left: 50%;
  bottom: 0;
  z-index: 0;
  width: 100vw;
  height: 3px;
  background: rgba(28, 25, 21, 0.72);
  transform: translateX(-50%);
  pointer-events: none;
}

#shelf-target { touch-action: none; }

.slot {
  position: absolute;
  left: 50%;
  bottom: 0;
  z-index: 1;
  width: var(--square);
  height: var(--square);
  transform: translateX(-50%);
  overflow: visible;
}

.sil {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.scaler {
  position: absolute;
  inset: 0;
  transform-origin: 50% 100%;
}

#guess-scaler { z-index: 1; }
#truth-scaler { z-index: 2; }

.truth-tip {
  position: absolute;
  z-index: 4;
  left: 50%;
  margin: 0;
  padding: 6px 10px 7px;
  border: 1px solid rgba(28, 25, 21, 0.12);
  border-radius: 9px;
  background: #ffffff;
  box-shadow: 0 8px 20px rgba(28, 25, 21, 0.14);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--red-deep);
  white-space: nowrap;
  pointer-events: none;
  transform: translate(-50%, calc(-100% - 10px));
}

.truth-tip::before,
.truth-tip::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
}

.truth-tip::before {
  bottom: -8px;
  border-top: 8px solid rgba(28, 25, 21, 0.16);
}

.truth-tip::after {
  bottom: -6px;
  border-top: 7px solid #ffffff;
}

.resize-tip {
  color: var(--ink);
  white-space: normal;
  max-width: 220px;
  text-align: center;
}

#path-ref,
#path-guess {
  fill: var(--ink);
  stroke: none;
}

.hit {
  fill: transparent;
  cursor: ns-resize;
  touch-action: none;
}

#path-truth-halo,
#path-truth {
  fill: none;
  stroke-linejoin: round;
  stroke-linecap: round;
}

#path-truth-halo { stroke: #ffffff; }
#path-truth { stroke: var(--red); }

.handle {
  position: absolute;
  z-index: 3;
  width: 44px;
  height: 44px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  transform: translate(-50%, -50%);
  touch-action: none;
}

.handle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 14px;
  height: 14px;
  border: 2px solid var(--ink);
  border-radius: 3px;
  background: #ffffff;
  box-shadow: 0 1px 4px rgba(28, 25, 21, 0.25);
  transform: translate(-50%, -50%);
}

.handle[data-corner="nw"],
.handle[data-corner="se"] { cursor: nwse-resize; }

.handle[data-corner="ne"],
.handle[data-corner="sw"] { cursor: nesw-resize; }

#shelf-target.is-locked .handle { display: none; }
#shelf-target.is-locked .hit { cursor: default; }

.dock-round { display: none; }

.name-block {
  padding: 12px 8px 0;
  text-align: center;
}

.place-name {
  margin: 0;
  font-size: clamp(16px, 2vw, 22px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  text-wrap: balance;
}

#dock {
  position: absolute;
  top: 14px;
  left: 50%;
  z-index: 24;
  width: min(460px, calc(100% - 500px));
  transform: translateX(-50%);
}

.dock-card {
  padding: 14px 14px 12px;
  border: 1px solid rgba(28, 25, 21, 0.1);
  border-radius: 14px;
  background: var(--paper);
  box-shadow: 0 16px 48px rgba(28, 25, 21, 0.14);
}

.timeout-note {
  margin: 0 0 8px;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red);
}

.dock-card .round-prompt {
  margin: 0;
  line-height: 1.35;
}

.round-help {
  margin: 6px 0 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 13px;
  line-height: 1.4;
  color: var(--muted);
}

.dock-card.is-over .round-prompt,
.dock-card.is-under .round-prompt { color: var(--red-deep); }

.dock-card.is-exact .round-prompt { color: var(--ink); }

.reveal-name {
  margin: 14px 0 0;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.result-remark {
  margin: 0;
  color: var(--red);
  font-size: clamp(26px, 3.4vw, 34px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.result-detail {
  margin: 6px 0 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 13px;
  line-height: 1.4;
  color: var(--muted);
}

.result-areas {
  margin: 8px 0 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 13px;
  line-height: 1.45;
  color: var(--ink);
}

.result-areas span {
  display: block;
  font-variant-numeric: tabular-nums;
}

.finish-card { width: min(460px, 100%); }

.final-score-kicker {
  margin: 12px 0 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
}

.final-score {
  margin: 4px 0 0;
  font-size: 40px;
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--red-deep);
}

.finish-recap {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  max-height: min(280px, 40dvh);
  overflow: auto;
  border-top: 1px solid var(--line);
}

.finish-recap li {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

.finish-recap-name {
  margin: 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.finish-recap-score {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.finish-recap-score.is-miss { color: var(--red-deep); }

@media (max-width: 720px) {
  .score-history-wrap { display: none !important; }

  #timer-block { height: 11px; }
  .timer-value { font-size: 9px; }

  #chrome { display: none; }

  #dock {
    top: 8px;
    width: calc(100% - 16px);
  }

  .dock-round { display: block; margin: 0 0 8px; }
  .timeout-note { display: none !important; }
  #dock-help { display: none !important; }
  .dock-card { padding: 12px 12px 10px; }

  #stage { padding: 228px 8px calc(16px + env(safe-area-inset-bottom)); }

  .compare {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 1fr) auto minmax(0, 1fr) auto;
  }

  #meta-target {
    position: relative;
    z-index: 4;
    margin-bottom: 14px;
    transform: translateY(-16px);
  }

  .name-block { padding: 6px 8px 0; }
  .result-detail { margin-top: 4px; }
  .result-areas { margin-top: 4px; }
  .reveal-name { margin-top: 8px; font-size: 32px; }
  #dock-score { display: none !important; }
  .btn-block { margin-top: 8px; }

  .ground { display: none; }
  .resize-tip { display: none; }
  #path-ref { fill: var(--red); }

  #shelf-target { grid-column: 1; grid-row: 1; }
  #shelf-target .slot { bottom: 34px; }
  #meta-target { grid-column: 1; grid-row: 2; }
  #shelf-ref { grid-column: 1; grid-row: 3; }
  #meta-ref { grid-column: 1; grid-row: 4; }

  .intro-card h1 { font-size: 28px; }
  .pace-switch { grid-template-columns: 1fr; }
  .pace-switch button + button { border-left: 0; border-top: 1px solid var(--line); }
}

@media (prefers-reduced-motion: reduce) {
  #load-overlay,
  .load-bar-fill { transition: none; }
}