/*
  Univers du "Bureau des quêtes" : dossier administratif devenu cadeau.
  Palette, polices de repli et gabarit repris de la direction artistique
  de la boîte à quêtes (fond crème, encre bleue, cachets rouges, or réservé
  à la finale).

  Choix délibéré : une seule mise en page (pas de thème sombre inversé).
  Le "dossier" reste un document en papier crème, comme sur l'objet imprimé —
  seule l'ambiance derrière le document s'adapte au thème du visiteur.

  Mobile-first : conçu d'abord pour 360–430px de large (consultation au
  téléphone pendant le jeu), cibles tactiles ≥44px, saisie ≥16px pour éviter
  le zoom automatique iOS, marges de sécurité pour les écrans à encoche.
*/
:root {
  --ink: #0b3154;
  --brick: #a83435;
  --cream: #f7f0e4;
  --cream-deep: #efe4cf;
  --gold: #b58b3e;
  --text: #272521;
  --page-bg: #e9ded0;
  --font-display: Georgia, "Times New Roman", serif;
  --font-body: Arial, "Helvetica Neue", sans-serif;
  --font-mono: "Courier New", ui-monospace, monospace;
}

@media (prefers-color-scheme: dark) {
  :root { --page-bg: #16130f; }
}
:root[data-theme="dark"]  { --page-bg: #16130f; }
:root[data-theme="light"] { --page-bg: #e9ded0; }

* { box-sizing: border-box; }

body {
  min-height: 100dvh;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px calc(24px + env(safe-area-inset-bottom))
    calc(16px + env(safe-area-inset-left));
  padding-right: calc(16px + env(safe-area-inset-right));
  background-color: var(--page-bg);
  background-image:
    radial-gradient(circle at 15% 20%, rgba(11, 49, 84, 0.05), transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(168, 52, 53, 0.04), transparent 45%);
  font-family: var(--font-body);
  color: var(--text);
}

.card {
  position: relative;
  width: 100%;
  max-width: 440px;
  background-color: var(--cream);
  border: 2px solid var(--ink);
  box-shadow:
    0 0 0 4px var(--cream),
    0 0 0 5px var(--gold),
    0 18px 40px rgba(20, 14, 6, 0.28);
  padding: 24px 20px 26px;
  background-image:
    radial-gradient(circle at 25% 15%, rgba(11, 49, 84, 0.035), transparent 40%),
    radial-gradient(circle at 75% 85%, rgba(168, 52, 53, 0.03), transparent 45%);
}

.masthead {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 14px;
  margin-bottom: 22px;
}

.dossier-id {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--brick);
  line-height: 1.5;
}

.seal {
  width: 42px;
  height: 42px;
  flex: none;
  filter: drop-shadow(0 2px 3px rgba(20, 14, 6, 0.25));
}

h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-variant: small-caps;
  letter-spacing: 0.02em;
  font-size: 24px;
  color: var(--ink);
  margin: 0 0 10px;
  text-wrap: balance;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brick);
  margin: 0 0 16px;
}

p.lede {
  font-size: 14.5px;
  line-height: 1.65;
  margin: 0 0 26px;
  max-width: 62ch;
}

/* Carnet des cinq pièces : scratchpad libre, persisté en localStorage */
.notebook {
  border: 1px solid var(--ink);
  background: var(--cream-deep);
  border-left: 3px solid var(--gold);
  margin: 0 0 28px;
  padding: 4px 12px 12px;
}

.notebook legend {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  padding: 0 4px;
}

.notebook-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 12px;
  margin-top: 6px;
}

.notebook-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.notebook-field span {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  opacity: 0.75;
}

.notebook-field .note {
  width: 100%;
  min-height: 44px;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text);
  background: var(--cream);
  border: 1px solid rgba(11, 49, 84, 0.35);
  border-radius: 3px;
  padding: 8px 10px;
}

.notebook-field .note:focus {
  outline: none;
  border-color: var(--brick);
}

form { margin: 0; }

label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 8px;
}

.input-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: stretch;
}

#code {
  flex: 1 1 160px;
  min-width: 0;
  min-height: 44px;
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  background: transparent;
  border: none;
  border-bottom: 1.5px solid var(--ink);
  padding: 8px 2px;
  outline: none;
}

#code::placeholder {
  color: rgba(11, 49, 84, 0.35);
  letter-spacing: 0.12em;
}

#code:focus {
  border-bottom-color: var(--brick);
}

button {
  flex: none;
  min-height: 44px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cream);
  background: var(--brick);
  border: none;
  border-radius: 3px 8px 5px 9px;
  padding: 0 18px;
  cursor: pointer;
  box-shadow: inset 0 0 0 1px rgba(247, 240, 228, 0.35);
  transition: transform 120ms ease, background 120ms ease;
}

button:hover { background: #8f2c2d; }
button:active { transform: scale(0.96) rotate(-1deg); }

button:focus-visible,
#code:focus-visible,
.notebook-field .note:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.feedback {
  margin-top: 14px;
  min-height: 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--brick);
}

.shake { animation: shake 420ms ease; }
@keyframes shake {
  10%, 90% { transform: translateX(-1px); }
  20%, 80% { transform: translateX(3px); }
  30%, 50%, 70% { transform: translateX(-6px); }
  40%, 60% { transform: translateX(6px); }
}

/* Séquence d'apposition du cachet */
.stamp-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 20;
}

.stamp-layer img {
  width: 150px;
  height: 150px;
  opacity: 0;
  filter: drop-shadow(0 10px 18px rgba(20, 14, 6, 0.35));
}

.stamp-layer.playing img {
  animation: stamp-drop 620ms cubic-bezier(.2, .9, .3, 1.2) forwards;
}

@keyframes stamp-drop {
  0%   { opacity: 0; transform: translateY(-160px) scale(2.4) rotate(-18deg); }
  60%  { opacity: 1; transform: translateY(0) scale(1.08) rotate(-8deg); }
  75%  { transform: translateY(2px) scale(0.98) rotate(-8deg); }
  100% { opacity: 0; transform: translateY(6px) scale(1.02) rotate(-8deg); }
}

.approved-mark {
  display: none;
  margin: 18px auto 0;
  width: fit-content;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brick);
  border: 2.5px solid var(--brick);
  border-radius: 3px;
  padding: 4px 14px;
  transform: rotate(-6deg);
  opacity: 0;
}

.approved-mark.show {
  display: block;
  animation: mark-in 260ms ease 560ms forwards;
}

@keyframes mark-in {
  from { opacity: 0; transform: rotate(-6deg) scale(1.6); }
  to   { opacity: 1; transform: rotate(-6deg) scale(1); }
}

.reveal {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  margin-top: 0;
}

.reveal.open {
  max-height: 640px;
  opacity: 1;
  margin-top: 22px;
  transition: max-height 640ms ease 520ms, opacity 500ms ease 620ms, margin-top 640ms ease 520ms;
  border-top: 1px solid var(--ink);
  padding-top: 18px;
}

.reveal-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  margin: 0 0 10px;
}

.exhibit-frame {
  border: 1.5px solid var(--ink);
  background: var(--cream-deep);
  padding: 4px;
}

.exhibit-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.exhibit-placeholder {
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
  border: 1.5px dashed var(--ink);
  background:
    repeating-linear-gradient(135deg, rgba(11, 49, 84, 0.05) 0 10px, transparent 10px 20px);
}

.exhibit-placeholder span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink);
  max-width: 30ch;
}

.reveal-caption {
  font-size: 14px;
  line-height: 1.6;
  margin: 12px 0 0;
}

.footer {
  margin-top: 22px;
  padding-top: 12px;
  border-top: 1px solid var(--ink);
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  text-align: center;
  opacity: 0.75;
}

@media (prefers-reduced-motion: reduce) {
  .shake, .stamp-layer.playing img, .approved-mark.show {
    animation: none !important;
  }
  .reveal.open { transition: none; }
}