/* Étagère — Rejoindre (inscription via lien d'invitation). Fidèle au design. Clair + sombre. */
:root{
  --bg:#f4efe4; --surface:#fbf8f1; --input:#ffffff; --text:#2f2a22; --muted:#8a7f6f;
  --accent:#b4552f; --accent-hover:#8a3f22; --accent-text:#fff; --accent-shadow:rgba(180,85,47,.26);
  --line:rgba(74,65,54,.14); --soft:rgba(74,65,54,.05); --card-shadow:rgba(60,40,20,.16);
  --danger:#b23c2a; --danger-soft:rgba(178,60,42,.09); --shelf-op:.4;
}
:root[data-theme="dark"]{
  --bg:#161310; --surface:#211d18; --input:#2a251f; --text:#f0e8d8; --muted:#9a9082;
  --accent:#d98f5c; --accent-hover:#e6a274; --accent-text:#1a130d; --accent-shadow:rgba(217,143,92,.28);
  --line:rgba(255,255,255,.11); --soft:rgba(255,255,255,.05); --card-shadow:rgba(0,0,0,.45);
  --danger:#e0745f; --danger-soft:rgba(224,116,95,.14); --shelf-op:.24;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);min-height:100vh;position:relative;overflow-x:hidden;
  font-family:'Public Sans',system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}

/* Décor étagère au bas de page */
.shelf{position:fixed;left:0;right:0;bottom:-14px;display:flex;justify-content:center;align-items:flex-end;gap:9px;
  opacity:var(--shelf-op);pointer-events:none;z-index:0}
.shelf i{width:26px;border-radius:5px 5px 0 0;display:block}

.stage{position:relative;z-index:2;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:34px 18px}
.card{width:460px;max-width:100%;background:var(--surface);border:1px solid var(--line);border-radius:24px;
  box-shadow:0 24px 60px var(--card-shadow);padding:32px 36px 30px}
.card.center{text-align:center;max-width:400px}

.brand{display:flex;align-items:center;justify-content:center;gap:10px;font:600 21px/1 'Spectral',serif;letter-spacing:.3px}
.diamond{width:13px;height:13px;border-radius:3px;background:var(--accent);transform:rotate(45deg)}

/* Bandeau invitation */
.invite{margin-top:22px;padding:18px;border-radius:16px;background:var(--soft);border:1px solid var(--line);
  display:flex;align-items:center;gap:14px}
.fam-av{width:48px;height:48px;flex:none;border-radius:14px;display:flex;align-items:center;justify-content:center;
  color:#fff;font:600 20px/1 'Spectral',serif;background:#7d5aa6}
.invite-info{flex:1;min-width:0}
.invite-lead{font:400 12.5px/1.3 'Public Sans',sans-serif;color:var(--muted)}
.invite-fam{margin-top:3px;font:600 17px/1.15 'Spectral',serif}
.invite-by{margin-top:8px;display:flex;align-items:center;gap:8px}
.mini-avs{display:flex}
.mini-av{width:24px;height:24px;border-radius:50%;margin-left:-6px;display:flex;align-items:center;justify-content:center;
  color:#fff;font:600 10px/1 'Public Sans',sans-serif;box-shadow:0 0 0 2px var(--soft)}
.mini-av:first-child{margin-left:0}
.by{font:400 11.5px/1 'Public Sans',sans-serif;color:var(--muted)}

/* Formulaire */
.form{margin-top:22px;display:flex;flex-direction:column;gap:14px}
.field{display:block}
.lab{display:block;font:500 12px/1 'Public Sans',sans-serif;color:var(--muted);margin-bottom:7px}
.field input{width:100%;box-sizing:border-box;padding:12px 14px;border-radius:12px;border:1px solid var(--line);
  background:var(--input);color:var(--text);font:400 14px/1.3 'Public Sans',sans-serif;outline:none}
.field input:focus{border-color:var(--accent)}
.row{display:flex;gap:12px}
.half{flex:1;min-width:0}

.avatar-picker{display:flex;align-items:center;gap:16px}
.preview-wrap{flex:none;display:flex;flex-direction:column;align-items:center;gap:6px}
.preview{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  color:#fff;font:600 24px/1 'Spectral',serif;background:#5f7d3f;box-shadow:0 6px 16px rgba(60,40,20,.22)}
.preview-cap{font:400 10px/1 'Public Sans',sans-serif;color:var(--muted)}
.swatches{flex:1;display:flex;flex-wrap:wrap;gap:10px}
.swatch{width:32px;height:32px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;
  border:2px solid transparent}
.swatch svg{width:14px;height:14px}
.swatch.on{border-color:var(--text);box-shadow:0 0 0 2px var(--surface)}

.btn{padding:14px;border-radius:13px;cursor:pointer;text-decoration:none;border:none;
  font:600 14px/1 'Public Sans',sans-serif;display:inline-flex;align-items:center;justify-content:center}
.btn.accent{background:var(--accent);color:var(--accent-text);box-shadow:0 8px 20px var(--accent-shadow)}
.btn.accent:hover{background:var(--accent-hover)}
.btn.full{width:100%}
.btn:disabled{opacity:.6;cursor:default}
.form .btn.accent{margin-top:6px;padding:15px;font-size:15px}
.alt{text-align:center;font:400 13px/1 'Public Sans',sans-serif;color:var(--muted)}
.alt a{color:var(--accent);font-weight:600;text-decoration:none}
.form-err{font:500 13px/1.4 'Public Sans',sans-serif;color:var(--danger);text-align:center}

/* États centrés (invalide / succès) */
.warn-ic,.ok-ic{margin:24px auto 0;display:flex;align-items:center;justify-content:center}
.warn-ic{width:58px;height:58px;border-radius:17px;background:var(--danger-soft);color:var(--danger)}
.ok-ic{width:64px;height:64px;border-radius:50%;background:#5f7d3f;box-shadow:0 10px 24px rgba(95,125,63,.35)}
.big-title{margin-top:20px;font:600 22px/1.2 'Spectral',serif}
.big-sub{margin-top:11px;font:400 13.5px/1.55 'Public Sans',sans-serif;color:var(--muted)}
.center .btn.accent{margin-top:24px}
.redir{margin-top:20px;display:flex;align-items:center;justify-content:center;gap:9px;
  font:500 12.5px/1 'Public Sans',sans-serif;color:var(--muted)}
.spin{width:15px;height:15px;border-radius:50%;border:2px solid var(--line);border-top-color:var(--accent);
  animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.theme-toggle{position:fixed;right:20px;bottom:20px;z-index:5;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:var(--surface);cursor:pointer;font-size:17px;box-shadow:0 6px 18px rgba(0,0,0,.18)}

@media(max-width:520px){ .card{padding:26px 22px 24px} .shelf i{width:20px} }