:root {
  --fond: #fff9ef;
  --principale: #e0482f;
  --accent: #2f9ee0;
  --texte: #2b2140;
  --surface: #ffffff;
  --bord: #ece4d8;
  --doux: #6f6680;
  --danger: #c0392b;
  --rayon: 18px;
  --ombre: 0 6px 24px rgba(43, 33, 64, 0.08);
  color-scheme: light;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  font-family: "Nunito", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.5;
  color: var(--texte);
  background: var(--fond);
  -webkit-text-size-adjust: 100%;
}
h1, h2, h3 { line-height: 1.2; }
h3 { margin: 1.4em 0 0.5em; font-size: 1.05rem; }
a { color: inherit; }
input, select, textarea, button { font: inherit; color: inherit; }
input, select, textarea {
  width: 100%;
  border: 2px solid var(--bord);
  border-radius: 12px;
  padding: 10px 12px;
  background: #fff;
  min-height: 44px;
}
input:focus, select:focus, textarea:focus { outline: 3px solid color-mix(in srgb, var(--principale) 35%, transparent); border-color: var(--principale); }
input[type="checkbox"], input[type="radio"] { width: 22px; height: 22px; min-height: 0; accent-color: var(--principale); flex: none; }
input[type="file"] { padding: 8px; }

.bouton {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 44px; padding: 10px 18px;
  border: none; border-radius: 999px;
  background: var(--principale); color: #fff;
  font-weight: 700; text-decoration: none; cursor: pointer;
  transition: transform 0.1s ease, filter 0.15s ease;
}
.bouton:hover { filter: brightness(1.06); }
.bouton:active { transform: scale(0.97); }
.bouton:disabled { opacity: 0.5; cursor: not-allowed; }
.bouton-secondaire { background: #fff; color: var(--principale); border: 2px solid var(--principale); }
.bouton-secondaire.fait { background: color-mix(in srgb, var(--principale) 12%, #fff); }
.bouton-secondaire.fait::after { content: " ✓"; }
.bouton-danger { background: var(--danger); }
.bouton-grand { font-size: 1.15rem; padding: 14px 28px; }
.bouton-rond { width: 44px; padding: 0; flex: none; }
.bouton-lien { background: none; border: none; padding: 6px 4px; color: var(--principale); text-decoration: underline; cursor: pointer; font-size: 0.9rem; min-height: 32px; }
.bouton-lien.danger { color: var(--danger); }
.petit { font-size: 0.88rem; color: var(--doux); }
.erreur-page { padding: 40px 16px; text-align: center; font-size: 1.1rem; }

.toast {
  position: fixed; left: 50%; bottom: 84px; transform: translateX(-50%);
  background: var(--texte); color: #fff; padding: 12px 18px; border-radius: 14px;
  max-width: calc(100vw - 32px); z-index: 50; box-shadow: var(--ombre);
}

/* ---------- Accueil ---------- */
.page-accueil { background: radial-gradient(circle at 20% 10%, #ffe4d6, transparent 40%), radial-gradient(circle at 90% 30%, #dff1ff, transparent 40%), var(--fond); min-height: 100vh; }
.accueil { max-width: 560px; margin: 0 auto; padding: 48px 16px; text-align: center; }
.accueil h1 { font-size: clamp(2rem, 8vw, 3rem); color: var(--principale); margin: 8px 0; }
.accueil-motif { font-size: 3rem; }
.accroche-accueil { font-size: 1.15rem; }
.carte-accueil { background: var(--surface); border-radius: var(--rayon); padding: 24px; box-shadow: var(--ombre); text-align: left; margin-top: 24px; }

/* ---------- Formulaires ---------- */
.pile-form { display: grid; gap: 14px; }
.pile-form label { display: grid; gap: 6px; font-weight: 600; }
.pile-form label.choix, .choix { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; }
.choix-ligne { border: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.choix-ligne legend { font-weight: 600; margin-bottom: 6px; }
.ligne-form { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.ligne-form > input, .ligne-form > select { flex: 1 1 160px; width: auto; }

/* ---------- Tableau de bord hôte ---------- */
.barre { display: flex; align-items: center; gap: 12px; padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--bord); flex-wrap: wrap; }
.marque { font-weight: 800; color: var(--principale); text-decoration: none; font-size: 1.1rem; }
.etape { background: color-mix(in srgb, var(--accent) 15%, #fff); color: var(--texte); border-radius: 999px; padding: 2px 12px; font-size: 0.85rem; font-weight: 700; }
.barre .bouton { margin-left: auto; min-height: 38px; padding: 6px 14px; font-size: 0.9rem; }
.bandeau { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; background: #fff3cd; padding: 10px 16px; border-bottom: 1px solid #f0dc9a; }
.bandeau span { flex: 1 1 220px; font-weight: 600; }

.onglets { display: flex; gap: 4px; overflow-x: auto; padding: 8px 16px 0; background: var(--surface); border-bottom: 1px solid var(--bord); scrollbar-width: none; }
.onglets button { border: none; background: none; padding: 10px 14px; border-radius: 12px 12px 0 0; cursor: pointer; font-weight: 700; color: var(--doux); white-space: nowrap; min-height: 44px; }
.onglets button[aria-selected="true"] { color: var(--principale); box-shadow: inset 0 -3px 0 var(--principale); }

.tableau { display: grid; grid-template-columns: minmax(320px, 420px) 1fr; gap: 16px; padding: 16px; max-width: 1400px; margin: 0 auto; }
.panneau { display: none; background: var(--surface); border-radius: var(--rayon); padding: 16px; box-shadow: var(--ombre); min-width: 0; }
.panneau.actif { display: block; }
#panneau-chat { display: block; position: sticky; top: 16px; height: calc(100vh - 140px); padding: 0; overflow: hidden; }
.onglet-mobile { display: none; }
.resume { font-weight: 700; margin-top: 0; }

@media (max-width: 899px) {
  .tableau { grid-template-columns: 1fr; padding: 12px 0; gap: 0; }
  .panneau { border-radius: 0; box-shadow: none; padding: 16px; }
  #panneau-chat { display: none; position: static; height: calc(100dvh - 120px); }
  body[data-onglet="assistant"] #panneau-chat { display: block; }
  .onglet-mobile { display: inline-block; }
}

.liste-invites { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.invite { border: 2px solid var(--bord); border-radius: 14px; padding: 10px 12px; }
.invite.statut-vient { border-color: #b7e4c0; }
.invite.statut-ne_vient_pas { opacity: 0.75; }
.invite-nom { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.invite-actions { display: flex; gap: 6px 12px; align-items: center; flex-wrap: wrap; margin-top: 4px; }
.invite-actions label { display: flex; align-items: center; gap: 6px; }
.petit-mot { margin: 6px 0 0; font-style: italic; }
.pastille { font-size: 0.78rem; background: #f1ecf7; border-radius: 999px; padding: 2px 10px; }
.pastille-alerte { background: #fde2dd; color: #8a2a1c; }
.liste-simple { padding-left: 18px; }
.liste-simple .non-lu { font-weight: 700; }

/* ---------- Assistant ---------- */
/* La conversation défile ; la zone de saisie reste toujours visible en bas. */
#chat { display: flex; flex-direction: column; height: 100%; min-height: 0; }
.chat { display: flex; flex-direction: column; flex: 1; min-height: 0; }
.chat-fil { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.bulle { max-width: 88%; padding: 10px 14px; border-radius: 18px; white-space: pre-wrap; overflow-wrap: anywhere; }
.bulle-assistant { background: #f4f1f8; align-self: flex-start; border-bottom-left-radius: 6px; }
.bulle-user { background: var(--principale); color: #fff; align-self: flex-end; border-bottom-right-radius: 6px; }
.bulle.attente { animation: clignote 1.2s infinite; }
@keyframes clignote { 50% { opacity: 0.4; } }
.chat-actions { flex: none; max-height: 40%; overflow-y: auto; display: flex; flex-wrap: wrap; gap: 8px; padding: 0 16px; }
.chat-actions:not(:empty) { padding-bottom: 10px; }
.partages { display: flex; flex-wrap: wrap; gap: 8px; width: 100%; }
.partages p { width: 100%; margin: 0; }
.chat-saisie { flex: none; display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--bord); align-items: flex-end; }
.chat-champ { resize: none; max-height: 140px; }
.chat-lecture { display: flex; gap: 8px; align-items: center; padding: 0 12px 10px; font-size: 0.85rem; color: var(--doux); }
.chat-lecture input { width: 18px; height: 18px; }
.ecoute { background: var(--danger); animation: clignote 1s infinite; }

/* ---------- Page de la fête ---------- */
.page-fete { background: var(--fond); color: var(--texte); border-radius: var(--rayon); padding: 24px 16px; display: grid; gap: 14px; }
.page-invite .page-fete { padding: 32px 0 8px; }
.pf-entete { text-align: center; padding: 8px 0 4px; }
.pf-motif { font-size: 3.4rem; line-height: 1; }
.pf-titre { font-size: clamp(2rem, 9vw, 3.2rem); color: var(--principale); margin: 10px 0 6px; overflow-wrap: anywhere; }
.pf-accroche { font-size: 1.2rem; margin: 0; }
.pf-carte { background: #fff; border-radius: var(--rayon); padding: 16px 18px; box-shadow: var(--ombre); border-top: 6px solid var(--accent); }
.pf-carte summary { font-weight: 700; cursor: pointer; min-height: 32px; }
.pf-carte summary + * { margin-top: 12px; }
.pf-etiquette { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.78rem; font-weight: 800; color: var(--principale); }
.pf-gros { font-size: 1.25rem; font-weight: 800; margin: 4px 0; }
.pf-compte { display: inline-block; background: var(--accent); color: #fff; font-weight: 800; border-radius: 999px; padding: 4px 14px; margin: 6px 0 0; }
.pf-infos { margin: 6px 0 4px; padding-left: 20px; }
.pf-infos li { margin: 4px 0; }
.pf-limite { text-align: center; margin: 0; font-weight: 600; }
.pf-annulee { text-align: center; font-weight: 700; }
.pf-carte .bouton { margin-top: 8px; }

/* ---------- Page invité ---------- */
.colonne { max-width: 640px; margin: 0 auto; padding: 0 16px 110px; display: grid; gap: 14px; }
.pied { text-align: center; font-size: 0.85rem; color: var(--doux); }
.bouton-flottant { position: fixed; right: 16px; bottom: 16px; z-index: 20; box-shadow: var(--ombre); }
.panneau-flottant { position: fixed; right: 16px; bottom: 76px; width: min(420px, calc(100vw - 32px)); height: min(560px, calc(100dvh - 100px)); background: #fff; border-radius: var(--rayon); box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18); z-index: 30; display: flex; flex-direction: column; overflow: hidden; }
.panneau-flottant[hidden] { display: none; }
.panneau-flottant-entete { display: flex; justify-content: space-between; align-items: center; padding: 10px 16px; border-bottom: 1px solid var(--bord); }
.panneau-flottant #chat { flex: 1; min-height: 0; }

/* ---------- Album ---------- */
.grille-album { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin-top: 12px; }
.media { margin: 0; background: #f6f3f9; border-radius: 14px; overflow: hidden; border: 3px solid transparent; cursor: pointer; }
.media.selectionne { border-color: var(--principale); }
.media.masque { opacity: 0.55; }
.media img, .media video { width: 100%; aspect-ratio: 1; object-fit: cover; display: block; background: #ddd; }
.media figcaption { padding: 6px 8px; font-size: 0.85rem; display: grid; gap: 2px; }
.media-actions { display: flex; flex-wrap: wrap; gap: 4px; }