/* Navette — papier de sécurité, encre, et un chirographe : le document coupé en deux
   dont chaque moitié seule ne vaut rien. Polices auto-hébergées (CSP 'self'). */

@font-face { font-family: "Atkinson Next"; src: url("/fonts/next-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Atkinson Next"; src: url("/fonts/next-600.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Atkinson Next"; src: url("/fonts/next-800.woff2") format("woff2"); font-weight: 800; font-display: swap; }
@font-face { font-family: "Atkinson Mono"; src: url("/fonts/mono-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Atkinson Mono"; src: url("/fonts/mono-600.woff2") format("woff2"); font-weight: 600; font-display: swap; }

:root {
  --papier: #E8EDE7;
  --carte: #F6F8F4;
  --encre: #1C2A4D;
  --encre-2: #4B5875;
  --trame: #BFCDC3;
  --sceau: #9B2C24;
  --dent: 12px;
  --ui: "Atkinson Next", "Atkinson Hyperlegible", system-ui, sans-serif;
  --mono: "Atkinson Mono", ui-monospace, "DejaVu Sans Mono", monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --papier: #152036;
    --carte: #1F2D4C;
    --encre: #E4EAE3;
    --encre-2: #A9B4C5;
    --trame: #2E3E62;
    --sceau: #E58477;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html { font-size: 106.25%; }
body {
  margin: 0;
  background: var(--papier);
  color: var(--encre);
  font: 400 1rem/1.55 var(--ui);
  -webkit-font-smoothing: antialiased;
}

.bar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: .25rem 2rem;
  max-width: 50rem;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0;
}
.mark {
  color: var(--encre);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -.01em;
  text-decoration: none;
}
.promise { margin: 0; color: var(--encre-2); font-size: .9rem; }

main {
  max-width: 50rem;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 5rem;
}

h1 {
  margin: 0 0 .75rem;
  font-weight: 800;
  font-size: clamp(2.1rem, 6vw, 3.25rem);
  line-height: 1.02;
  letter-spacing: -.025em;
  max-width: 14ch;
}
h1:focus { outline: none; }
h2 { margin: 0; font-size: 1.05rem; font-weight: 600; }

.lede { margin: 0 0 2.25rem; max-width: 36em; font-size: 1.125rem; color: var(--encre-2); }
.meta { margin: 1.25rem 0; color: var(--encre-2); }
.note { margin: 1rem 0; font-size: .92rem; color: var(--encre-2); max-width: 40em; }
.error { margin: 1rem 0; min-height: 1.55em; color: var(--sceau); font-weight: 600; }
.error:empty { min-height: 0; margin: 0; }

/* Dépôt */
.drop {
  position: relative;
  display: grid;
  gap: .2rem;
  place-content: center;
  min-height: 12rem;
  padding: 2rem;
  border: 2px dashed var(--encre-2);
  border-radius: 4px;
  text-align: center;
  transition: background-color .15s, border-color .15s;
}
.drop-main { font-size: 1.35rem; font-weight: 600; }
.drop-sub { color: var(--encre-2); }
.drop-pick {
  position: relative;
  color: var(--encre);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: .2em;
  cursor: pointer;
}
.drop-pick input { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }
.drop-pick:focus-within { outline: 3px solid var(--encre); outline-offset: 3px; border-radius: 2px; }
.drop.over { background: var(--carte); border-color: var(--encre); }

.list { list-style: none; margin: 1.25rem 0 0; padding: 0; }
.list li {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: .6rem 0;
  border-bottom: 1px solid var(--trame);
}
.list .name { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.list .size { color: var(--encre-2); font-variant-numeric: tabular-nums; white-space: nowrap; }
.list button { font: inherit; color: var(--encre-2); background: none; border: 0; cursor: pointer; padding: 0 .25rem; }
.list button:hover { color: var(--sceau); }

/* Options */
.opts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  margin: 2rem 0 1rem;
}
.field { display: grid; gap: .35rem; }
.field label, .words-form > label { font-size: .92rem; font-weight: 600; }
input[type="number"], input[type="text"], input[type="password"], select, .words-form input {
  font: inherit;
  color: var(--encre);
  background: var(--carte);
  border: 1.5px solid var(--encre-2);
  border-radius: 3px;
  padding: .55rem .7rem;
  min-width: 0;
}
.check { display: flex; gap: .6rem; align-items: baseline; margin: .5rem 0 1.5rem; color: var(--encre-2); }
.check input { accent-color: var(--encre); }

/* Autres façons d'entrer */
.gate-alt { display: grid; gap: .75rem; justify-items: start; margin-top: 2rem; max-width: 34rem; }
#sas-words { font-size: clamp(2rem, 7vw, 3rem); margin: 1rem 0 0; }

/* Utilisateur connecté, invitations */
.who { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; align-items: baseline; margin: -1.25rem 0 2rem; color: var(--encre-2); }
.invites {
  margin: 0 0 2.5rem;
  padding: 1.5rem 0 .5rem;
  border-top: 1.5px solid var(--trame);
  border-bottom: 1.5px solid var(--trame);
}
.invites h2 { margin-bottom: .35rem; }
.invite-opts { grid-template-columns: 2fr 1fr; margin: 1.25rem 0; }
#codebox .invite-opts { grid-template-columns: 1fr 1fr; }
.inv-new { display: grid; gap: .4rem; margin-top: 1rem; }
#inv-list .size { white-space: normal; text-align: right; }

/* Boutons */
button { font: inherit; }
.primary {
  font-weight: 600;
  color: var(--carte);
  background: var(--encre);
  border: 0;
  border-radius: 3px;
  padding: .8rem 1.4rem;
  cursor: pointer;
}
.primary:disabled { opacity: .4; cursor: not-allowed; }
.primary:not(:disabled):hover { background: color-mix(in srgb, var(--encre) 85%, var(--sceau)); }
.quiet {
  color: var(--encre);
  background: none;
  border: 0;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: .22em;
  cursor: pointer;
}
.quiet:disabled { color: var(--encre-2); text-decoration: none; cursor: default; }
.copy {
  justify-self: start;
  font-weight: 600;
  color: var(--encre);
  background: transparent;
  border: 1.5px solid var(--encre);
  border-radius: 3px;
  padding: .5rem 1rem;
  cursor: pointer;
}
.copy:hover { background: var(--encre); color: var(--carte); }
:focus-visible { outline: 3px solid var(--encre); outline-offset: 3px; }
.row { display: flex; flex-wrap: wrap; gap: 1.75rem; margin-top: 1.5rem; }

/* Progression */
.bar-track { height: 10px; margin: 2rem 0 0; background: var(--trame); border-radius: 5px; overflow: hidden; }
.bar-fill { height: 100%; width: 0; background: var(--encre); transition: width .2s linear; }
#prog-text { font-variant-numeric: tabular-nums; }

/* Le chirographe */
.chiro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0 0 .5rem;
  filter: drop-shadow(0 1px 0 var(--trame));
}
.half {
  display: grid;
  align-content: start;
  gap: .6rem;
  padding: 1.6rem 2rem 1.75rem 1.6rem;
  background:
    repeating-radial-gradient(circle at 0 0, transparent 0 11px, color-mix(in srgb, var(--trame) 38%, transparent) 11px 12px),
    repeating-radial-gradient(circle at 100% 100%, transparent 0 11px, color-mix(in srgb, var(--trame) 38%, transparent) 11px 12px),
    var(--carte);
  transition: transform .7s cubic-bezier(.2, .7, .2, 1);
}
.half-link {
  clip-path: polygon(0 0, calc(100% - var(--dent)) 0%, 100% 7.143%, calc(100% - var(--dent)) 14.29%, 100% 21.43%, calc(100% - var(--dent)) 28.57%, 100% 35.71%, calc(100% - var(--dent)) 42.86%, 100% 50%, calc(100% - var(--dent)) 57.14%, 100% 64.29%, calc(100% - var(--dent)) 71.43%, 100% 78.57%, calc(100% - var(--dent)) 85.71%, 100% 92.86%, calc(100% - var(--dent)) 100%, 0 100%);
}
.half-words {
  margin-left: calc(-1 * var(--dent));
  padding-left: calc(1.6rem + var(--dent));
  clip-path: polygon(0 0%, var(--dent) 7.143%, 0 14.29%, var(--dent) 21.43%, 0 28.57%, var(--dent) 35.71%, 0 42.86%, var(--dent) 50%, 0 57.14%, var(--dent) 64.29%, 0 71.43%, var(--dent) 78.57%, 0 85.71%, var(--dent) 92.86%, 0 100%, 100% 100%, 100% 0);
}
/* La déchirure : les deux moitiés, d'abord jointes, s'écartent. */
.chiro.torn .half-link { transform: translate(-7px, -3px) rotate(-.6deg); }
.chiro.torn .half-words { transform: translate(7px, 5px) rotate(.5deg); }

.chiro.solo { grid-template-columns: 1fr; }
.chiro.solo .half-link { clip-path: none; transform: none; }

.hint { margin: 0; color: var(--encre-2); font-size: .92rem; }
.secret {
  display: block;
  margin: .6rem 0 .4rem;
  font-family: var(--mono);
  font-size: .9rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}
.secret.words {
  font-size: clamp(1.35rem, 3.6vw, 1.75rem);
  font-weight: 600;
  line-height: 1.3;
  word-spacing: .35em;
  overflow-wrap: normal;
}

/* Réception */
.words-form { display: grid; gap: .4rem; max-width: 34rem; }
.inline { display: flex; gap: .6rem; }
.inline input { flex: 1; font-family: var(--mono); font-size: 1.1rem; }

@media (max-width: 640px) {
  main { padding-top: 2.5rem; }
  .opts { grid-template-columns: 1fr 1fr; }
  .opts .field:first-child { grid-column: 1 / -1; }
  .invite-opts { grid-template-columns: 1fr; }
  .chiro { grid-template-columns: 1fr; }
  .half { padding: 1.4rem 1.4rem 1.6rem; }
  .half-link {
    padding-bottom: calc(1.6rem + var(--dent));
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--dent)), 92.86% 100%, 85.71% calc(100% - var(--dent)), 78.57% 100%, 71.43% calc(100% - var(--dent)), 64.29% 100%, 57.14% calc(100% - var(--dent)), 50% 100%, 42.86% calc(100% - var(--dent)), 35.71% 100%, 28.57% calc(100% - var(--dent)), 21.43% 100%, 14.29% calc(100% - var(--dent)), 7.143% 100%, 0% calc(100% - var(--dent)));
  }
  .half-words {
    margin-left: 0;
    margin-top: calc(-1 * var(--dent));
    padding: calc(1.4rem + var(--dent)) 1.4rem 1.6rem;
    clip-path: polygon(0% 0, 7.143% var(--dent), 14.29% 0, 21.43% var(--dent), 28.57% 0, 35.71% var(--dent), 42.86% 0, 50% var(--dent), 57.14% 0, 64.29% var(--dent), 71.43% 0, 78.57% var(--dent), 85.71% 0, 92.86% var(--dent), 100% 0, 100% 100%, 0 100%);
  }
  .chiro.torn .half-link { transform: translate(-2px, -6px) rotate(-.5deg); }
  .chiro.torn .half-words { transform: translate(3px, 7px) rotate(.4deg); }
  .inline { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  .half, .bar-fill, .drop { transition: none; }
}