:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #777777;
  --line: #e4e4e4;
  --soft: #f3f3f3;
  --active: #ebebeb;
  --key: #fafafa;
  --key-edge: #c8c8c8;
  --key-face: #111111;
  --algo: #f7f7f7;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: "IBM Plex Sans", Helvetica, sans-serif;
  font-weight: 300;
  letter-spacing: 0.01em;
  -webkit-tap-highlight-color: transparent;
}

body {
  display: flex;
  justify-content: center;
}

.shell {
  width: min(1040px, 100%);
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 1fr;
}

.content {
  min-width: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.algo {
  background: var(--algo);
  border-bottom: 1px solid var(--line);
  padding: 20px 16px 18px;
}

.algo-title {
  margin: 0 0 14px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.algo-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 4px;
}

.algo-flow > li {
  margin: 0;
}

.algo-box {
  display: block;
  border: 1px solid var(--line);
  background: #fff;
  padding: 8px 10px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  line-height: 1.35;
  color: var(--muted);
  min-width: 7.5rem;
}

.algo-flow > li[data-step][data-on="true"] .algo-box {
  border-color: #111;
  color: #111;
  background: #fff;
  font-weight: 500;
}

.algo-arrow {
  color: #bbb;
  font-family: "IBM Plex Mono", monospace;
  font-size: 14px;
  padding: 0 2px;
}

.algo-note {
  margin: 14px 0 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.4;
}

.stage {
  padding: 28px 20px 28px;
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  gap: 22px;
  min-width: 0;
}

.brand-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand .logo {
  margin: 0;
  font-size: clamp(26px, 5vw, 40px);
  font-weight: 400;
  letter-spacing: -0.03em;
}

.badge-zero {
  margin: 0;
  border: 1px solid #111;
  padding: 6px 10px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.lang-mode {
  display: inline-flex;
  gap: 0;
  margin-top: 14px;
  border: 1px solid #111;
}

.lang-btn {
  appearance: none;
  border: 0;
  margin: 0;
  min-width: 52px;
  min-height: 36px;
  padding: 0 14px;
  background: #fff;
  color: #111;
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  cursor: pointer;
  touch-action: manipulation;
}

.lang-btn + .lang-btn {
  border-left: 1px solid #111;
}

.lang-btn[aria-pressed="true"] {
  background: #111;
  color: #fff;
}

.lang-btn:focus-visible {
  outline: 2px solid #111;
  outline-offset: 2px;
}

.brand .meta {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12px;
  font-family: "IBM Plex Mono", monospace;
  line-height: 1.45;
}

.gauge {
  margin-top: 18px;
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
}

.gauge-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
}

.gauge-label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.gauge-value {
  font-family: "IBM Plex Mono", monospace;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.gauge-track {
  height: 10px;
  border: 1px solid var(--fg);
  background: #fff;
}

.gauge-fill {
  height: 100%;
  width: 0%;
  background: var(--fg);
}

.gauge-hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
}

.card {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 36px 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
  justify-content: center;
}

.hint {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.4;
}

.lang {
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.question {
  margin: 0;
  font-size: clamp(24px, 4.5vw, 34px);
  font-weight: 400;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.answer {
  margin: 0;
  font-size: clamp(17px, 3vw, 21px);
  line-height: 1.45;
  color: #333;
  max-width: 34em;
}

.provenance {
  margin: 4px 0 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.answer.is-thinking {
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: 0.08em;
}

.answer.is-thinking .dot {
  display: inline-block;
  animation: think-dot 1s ease-in-out infinite;
}

.answer.is-thinking .dot:nth-child(2) {
  animation-delay: 0.15s;
}

.answer.is-thinking .dot:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes think-dot {
  0%,
  80%,
  100% {
    opacity: 0.2;
    transform: translateY(0);
  }
  40% {
    opacity: 1;
    transform: translateY(-2px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .answer.is-thinking .dot {
    animation: none;
    opacity: 0.7;
  }
}

.tags {
  margin: 6px 0 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--muted);
}

.paths {
  display: grid;
  gap: 12px;
}

.path {
  border: 1px solid var(--line);
  background: #fff;
  padding: 16px;
}

.path[data-active="true"] {
  background: var(--active);
  border-color: #bdbdbd;
}

.path[data-active="false"] {
  opacity: 0.55;
}

.path-head {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 14px;
}

.path-num {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border: 1px solid var(--fg);
  display: grid;
  place-items: center;
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  font-weight: 500;
}

.path-title {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
}

.path-desc {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.path-prompt {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
}

.learn-progress {
  margin: 8px 0 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.key-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.key {
  appearance: none;
  -webkit-appearance: none;
  margin: 0;
  border: 1px solid var(--key-edge);
  border-bottom-width: 4px;
  border-radius: 8px;
  background: var(--key);
  color: var(--key-face);
  min-width: 56px;
  min-height: 56px;
  padding: 8px 12px;
  font-family: "IBM Plex Mono", monospace;
  cursor: pointer;
  touch-action: manipulation;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  user-select: none;
}

.key:active,
.key.is-pressed {
  border-bottom-width: 2px;
  margin-top: 2px;
  background: #eee;
}

.key:focus-visible {
  outline: 2px solid #111;
  outline-offset: 2px;
}

.key-glyph {
  font-size: 18px;
  font-weight: 500;
  line-height: 1;
  text-transform: lowercase;
}

.key-label {
  font-size: 10px;
  color: var(--muted);
  font-family: "IBM Plex Sans", Helvetica, sans-serif;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.key-wide {
  min-width: min(100%, 220px);
  flex: 1;
  min-height: 64px;
}

.key-wide .key-glyph {
  font-size: 16px;
  letter-spacing: 0.08em;
}

.finish-row {
  margin-top: 4px;
}

.key-finish {
  background: #111;
  color: #fff;
  border-color: #111;
}

.key-finish .key-label {
  color: #bbb;
}

.key-finish:active {
  background: #222;
}

.bar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  align-items: baseline;
  color: var(--muted);
  font-size: 12px;
  font-family: "IBM Plex Mono", monospace;
  line-height: 1.45;
}

.bar p {
  margin: 0;
}

.text-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  touch-action: manipulation;
}

/* ——— Écran bilan ——— */

.end {
  padding: 28px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.end-kicker,
.hunt-kicker {
  margin: 0 0 8px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.end-title {
  margin: 0;
  font-size: clamp(32px, 6vw, 48px);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.end-lead {
  margin: 14px 0 0;
  font-size: 18px;
  line-height: 1.45;
  max-width: 28em;
  color: #333;
}

.end-humor {
  margin: 10px 0 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
  color: var(--muted);
}

.axes {
  display: grid;
  gap: 18px;
  border-top: 1px solid var(--line);
  padding-top: 24px;
}

.axis h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
}

.axis-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.axis-top span {
  font-family: "IBM Plex Mono", monospace;
  font-size: 13px;
}

.axis-desc {
  margin: 4px 0 10px;
  font-size: 13px;
  color: var(--muted);
}

.axis-track {
  height: 8px;
  border: 1px solid #111;
  background: #fff;
}

.axis-fill {
  height: 100%;
  background: #111;
}

.news {
  border-top: 1px solid var(--line);
  padding-top: 28px;
  background:
    linear-gradient(180deg, #fafafa 0%, #fff 42%);
  margin: 0 -20px;
  padding-left: 20px;
  padding-right: 20px;
  padding-bottom: 8px;
}

.news-brand {
  margin: 0;
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 400;
  letter-spacing: -0.03em;
}

.news-title {
  margin: 14px 0 0;
  font-size: clamp(22px, 3.5vw, 28px);
  font-weight: 400;
  letter-spacing: -0.02em;
  max-width: 16em;
  line-height: 1.25;
}

.news-copy {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.5;
  max-width: 32em;
  color: #333;
}

.news-points {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--muted);
}

.news-points li::before {
  content: "— ";
}

.news-form {
  margin-top: 22px;
  max-width: 440px;
}

.news-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.news-form input[type="email"] {
  flex: 1 1 200px;
  min-height: 52px;
  border: 1px solid #111;
  border-radius: 0;
  padding: 0 14px;
  font-family: "IBM Plex Sans", Helvetica, sans-serif;
  font-size: 16px;
  background: #fff;
  color: #111;
}

.news-form input[type="email"]:focus {
  outline: 2px solid #111;
  outline-offset: 2px;
}

.news-submit {
  appearance: none;
  border: 1px solid #111;
  background: #111;
  color: #fff;
  min-height: 52px;
  padding: 0 22px;
  font-family: "IBM Plex Sans", Helvetica, sans-serif;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  touch-action: manipulation;
}

.news-submit:active {
  background: #222;
}

.news-consent {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 12px;
  font-size: 13px;
  color: #444;
  line-height: 1.4;
  cursor: pointer;
}

.news-consent input {
  margin-top: 3px;
  width: 16px;
  height: 16px;
  accent-color: #111;
}

.news-error {
  margin: 10px 0 0;
  font-size: 13px;
  color: #111;
  font-family: "IBM Plex Mono", monospace;
}

.news-ok {
  margin: 10px 0 0;
  font-size: 14px;
  color: #111;
}

.hunt {
  border-top: 1px solid var(--line);
  padding-top: 28px;
}

.hunt-title {
  margin: 0;
  font-size: clamp(22px, 3.5vw, 28px);
  font-weight: 400;
  letter-spacing: -0.02em;
}

.hunt-copy {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.45;
  max-width: 34em;
  color: #333;
}

.hunt-days {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 6px;
}

.hunt-days li {
  border: 1px solid var(--line);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--muted);
  background: #fff;
}

.hunt-days li[data-state="open"] {
  border-color: #111;
  color: #111;
  font-weight: 500;
}

.hunt-days li[data-state="done"] {
  background: #111;
  border-color: #111;
  color: #fff;
}

.hunt-mission {
  margin: 14px 0 0;
  padding: 14px 16px;
  background: #f3f3f3;
  font-size: 15px;
  line-height: 1.45;
}

.end-actions {
  padding-top: 8px;
}

@media (min-width: 640px) {
  .paths {
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }

  .path {
    display: flex;
    flex-direction: column;
  }

  .key-row {
    margin-top: auto;
  }

  .axes {
    grid-template-columns: 1fr 1fr;
    gap: 22px 28px;
  }
}

/* Sidebar réelle à partir de ~900px */
@media (min-width: 900px) {
  .shell {
    grid-template-columns: 200px 1fr;
  }

  .algo {
    border-bottom: 0;
    border-right: 1px solid var(--line);
    padding: 36px 16px 28px;
    position: sticky;
    top: 0;
    align-self: start;
    height: 100vh;
    height: 100dvh;
    overflow: auto;
  }

  .algo-flow {
    flex-direction: column;
    align-items: stretch;
    flex-wrap: nowrap;
    gap: 0;
  }

  .algo-flow > li[data-step] .algo-box {
    min-width: 0;
    width: 100%;
  }

  .algo-arrow {
    text-align: center;
    padding: 4px 0;
  }

  .stage,
  .end {
    padding: 36px 28px 32px;
  }

  .news {
    margin-left: -28px;
    margin-right: -28px;
    padding-left: 28px;
    padding-right: 28px;
  }
}

[hidden] {
  display: none !important;
}