:root{
  --a4-navy:#08243d;
  --a4-navy-deep:#041b2f;
  --a4-green:#168342;
  --a4-green-soft:#e9f8ef;
  --a4-mint:#f3fbf6;
  --a4-orange:#f7941d;
  --a4-gold:#f7b500;
  --a4-ink:#14231b;
  --a4-muted:#65756d;
  --a4-line:#dfe9e3;
  --a4-danger:#b42318;
  --a4-bg:#f6faf8;
  --a4-shadow:0 24px 70px rgba(5,33,21,.22);
}

body.a4-modal-open{overflow:hidden!important;touch-action:none}
.a4-overlay[hidden]{display:none!important}
.a4-overlay{position:fixed;inset:0;z-index:99990;display:flex;align-items:center;justify-content:center;padding:28px;background:rgba(3,19,12,.62);backdrop-filter:blur(4px)}
.a4-dialog{width:min(880px,100%);max-height:min(88vh,860px);background:#fff;border:1px solid rgba(255,255,255,.35);border-radius:28px;box-shadow:var(--a4-shadow);overflow:hidden;display:flex;flex-direction:column;color:var(--a4-ink);font-family:inherit}
.a4-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 24px;background:linear-gradient(135deg,var(--a4-navy-deep),var(--a4-navy) 70%,#0c5c3d);color:#fff}
.a4-expert{display:flex;align-items:center;gap:14px;min-width:0}.a4-avatar{width:48px;height:48px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,var(--a4-orange),var(--a4-gold));color:#10233f;font-weight:900;box-shadow:inset 0 0 0 1px rgba(255,255,255,.35)}
.a4-eyebrow{font-size:.72rem;letter-spacing:.14em;font-weight:900;color:#bde7cb}.a4-header h2{margin:2px 0 0;font-size:clamp(1.15rem,2.5vw,1.55rem);line-height:1.15;color:#fff}.a4-icon-button{width:42px;height:42px;border:0;border-radius:13px;background:rgba(255,255,255,.12);color:#fff;font-size:1.9rem;line-height:1;cursor:pointer}.a4-icon-button:hover,.a4-icon-button:focus-visible{background:rgba(255,255,255,.2);outline:2px solid rgba(255,255,255,.45);outline-offset:2px}
.a4-content{padding:24px;overflow:auto;background:linear-gradient(180deg,#fff,var(--a4-bg))}.a4-intro p{margin:0 0 18px;color:var(--a4-muted);font-size:1rem;line-height:1.6}.a4-status-card{display:flex;align-items:flex-start;gap:12px;border:1px solid var(--a4-line);border-radius:18px;padding:15px 16px;background:#fff;box-shadow:0 8px 24px rgba(8,36,61,.05)}
.a4-status-dot{width:12px;height:12px;border-radius:999px;background:#9ca3af;margin-top:5px;box-shadow:0 0 0 6px rgba(156,163,175,.12);flex:0 0 auto}.a4-status-card strong{display:block;color:var(--a4-navy);font-size:.97rem}.a4-status-card p{margin:3px 0 0;color:var(--a4-muted);font-size:.9rem;line-height:1.45}
.a4-overlay[data-state="connecting"] .a4-status-dot,.a4-overlay[data-state="permission"] .a4-status-dot{background:var(--a4-gold);box-shadow:0 0 0 6px rgba(247,181,0,.14)}
.a4-overlay[data-state="listening"] .a4-status-dot{background:var(--a4-green);box-shadow:0 0 0 6px rgba(22,131,66,.13);animation:a4Pulse 1.6s ease-in-out infinite}.a4-overlay[data-state="speaking"] .a4-status-dot{background:var(--a4-orange);box-shadow:0 0 0 6px rgba(247,148,29,.15);animation:a4Pulse 1.15s ease-in-out infinite}.a4-overlay[data-state="error"] .a4-status-dot,.a4-overlay[data-state="full"] .a4-status-dot{background:var(--a4-danger);box-shadow:0 0 0 6px rgba(180,35,24,.12)}
@keyframes a4Pulse{50%{transform:scale(1.18);box-shadow:0 0 0 10px rgba(22,131,66,.08)}}
.a4-transcript{margin-top:16px;min-height:120px;max-height:320px;overflow:auto;border:1px solid var(--a4-line);background:#fff;border-radius:20px;padding:14px;display:flex;flex-direction:column;gap:10px}.a4-transcript:empty{display:none}.a4-message{max-width:86%;padding:11px 13px;border-radius:16px;line-height:1.48;font-size:.94rem;white-space:pre-wrap}.a4-message-user{align-self:flex-end;background:var(--a4-navy);color:#fff;border-bottom-right-radius:6px}.a4-message-assistant{align-self:flex-start;background:var(--a4-green-soft);color:#123522;border-bottom-left-radius:6px}.a4-message-system{align-self:center;background:#fff8e7;color:#805600;border:1px solid #f1ddb0;font-size:.86rem}
.a4-permission-note{margin:14px 0 0;padding:12px 14px;border-radius:14px;background:var(--a4-mint);color:#426052;font-size:.86rem;line-height:1.45}.a4-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.a4-btn{appearance:none;border:0;border-radius:14px;padding:13px 18px;font:inherit;font-weight:800;cursor:pointer;min-height:48px;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}.a4-btn:active{transform:translateY(1px)}.a4-btn:focus-visible{outline:3px solid rgba(247,181,0,.35);outline-offset:2px}.a4-btn-primary{background:linear-gradient(135deg,var(--a4-green),#0e6b37);color:#fff;box-shadow:0 10px 24px rgba(22,131,66,.2)}.a4-btn-secondary{background:#fff;color:var(--a4-navy);border:1px solid var(--a4-line)}.a4-btn-danger{background:#fff0ee;color:var(--a4-danger);border:1px solid #f4c8c2}.a4-btn[disabled]{opacity:.55;cursor:not-allowed;box-shadow:none}.a4-smallprint{margin-top:16px;color:#6d7d74;font-size:.77rem;line-height:1.45}
@media(max-width:720px){.a4-overlay{padding:0;align-items:stretch}.a4-dialog{width:100%;max-height:none;height:100dvh;border-radius:0;border:0}.a4-header{padding:calc(14px + env(safe-area-inset-top)) 16px 14px}.a4-content{padding:16px 16px calc(18px + env(safe-area-inset-bottom))}.a4-transcript{max-height:none;flex:1;min-height:180px}.a4-actions{display:grid;grid-template-columns:1fr}.a4-btn{width:100%}.a4-avatar{width:44px;height:44px;border-radius:14px}.a4-intro p{font-size:.94rem}}
@media(prefers-reduced-motion:reduce){.a4-status-dot{animation:none!important}.a4-btn{transition:none}}


/* A4 identité + OTP */
.a4-identity-flow,.a4-conversation-panel{display:block}
.a4-identity-flow[hidden],.a4-conversation-panel[hidden],.a4-form-card[hidden]{display:none!important}
.a4-form-card{display:grid;gap:11px;padding:20px;border:1px solid var(--a4-line);border-radius:20px;background:var(--a4-mint)}
.a4-form-card h3{margin:0;color:var(--a4-navy);font-size:1.15rem}
.a4-form-card p{margin:0 0 4px;color:var(--a4-muted);line-height:1.5}
.a4-form-card label{font-weight:800;color:var(--a4-ink);font-size:.92rem}
.a4-form-card input{width:100%;min-height:50px;border:1px solid #b9ccc1;border-radius:13px;background:#fff;color:var(--a4-ink);font:inherit;font-size:1rem;padding:12px 14px;outline:none;box-sizing:border-box}
.a4-form-card input:focus{border-color:var(--a4-green);box-shadow:0 0 0 3px rgba(22,131,66,.14)}
.a4-form-card .a4-otp-input{text-align:center;font-size:1.35rem;font-weight:900;letter-spacing:.28em;font-variant-numeric:tabular-nums}
.a4-form-card .a4-btn{width:100%;min-height:50px;margin-top:3px}
.a4-form-error{padding:10px 12px!important;margin:0!important;border-radius:11px;background:#fff0ee;color:var(--a4-danger)!important;font-weight:700}
@media(max-width:640px){
  .a4-form-card{padding:17px;border-radius:16px;gap:10px}
  .a4-form-card input,.a4-form-card .a4-btn{min-height:52px;font-size:16px}
  .a4-form-card .a4-otp-input{font-size:1.28rem}
}