:root{
  --ink:#1B2A44;
  --ink-soft:#47536F;
  --paper:#EDF0F2;
  --surface:#FFFFFF;
  --surface-2:#F5F7F8;
  --line:#D6DCE2;
  --line-soft:#E4E8EB;
  --seal:#9C3B2E;
  --seal-soft:#F3E4E0;
  --success:#2F6F4E;
  --success-soft:#E3EFE8;
  --warning:#A9781F;
  --warning-soft:#F3ECDC;
  --shadow: 0 1px 2px rgba(27,42,68,.06), 0 8px 24px -12px rgba(27,42,68,.18);
  --radius-sm:6px;
  --radius:10px;
  --font-display:'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body:'IBM Plex Sans', -apple-system, 'Segoe UI', sans-serif;
  --font-mono:'IBM Plex Mono', 'SF Mono', Consolas, monospace;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}
a{ color:inherit; }
h1,h2,h3{ font-family:var(--font-display); font-weight:600; margin:0; text-wrap:balance; }
.container{ max-width:1180px; margin:0 auto; padding:28px 24px 64px; }
.container.narrow{ max-width:720px; }

/* letterhead */
.letterhead{ display:flex; align-items:center; justify-content:space-between; gap:16px; padding-bottom:18px; margin-bottom:26px; border-bottom:2px solid var(--ink); }
.brand{ display:flex; align-items:center; gap:14px; text-decoration:none; }
.mark{ width:42px; height:42px; border-radius:50%; border:1.5px solid var(--ink); display:flex; align-items:center; justify-content:center; font-family:var(--font-display); font-weight:600; font-size:15px; flex-shrink:0; }
.brand-text .name{ font-family:var(--font-display); font-weight:600; font-size:19px; }
.brand-text .tag{ font-size:12px; color:var(--ink-soft); margin-top:1px; }
.letterhead nav{ display:flex; gap:18px; align-items:center; font-size:13.5px; }
.letterhead nav a{ text-decoration:none; color:var(--ink-soft); }
.letterhead nav a:hover{ color:var(--ink); }

/* pills / badges */
.pill{ font-family:var(--font-mono); font-size:11.5px; font-weight:500; letter-spacing:.04em; text-transform:uppercase; padding:5px 11px; border-radius:100px; background:var(--surface-2); color:var(--ink-soft); border:1px solid var(--line); display:inline-block; white-space:nowrap; }
.pill.tone-progress{ background:var(--warning-soft); color:var(--warning); border-color:transparent; }
.pill.tone-done{ background:var(--success-soft); color:var(--success); border-color:transparent; }
.pill.tone-seal{ background:var(--seal-soft); color:var(--seal); border-color:transparent; }

/* card */
.card{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow); padding:32px 36px; }
.card + .card{ margin-top:20px; }
.eyebrow{ font-family:var(--font-mono); font-size:11.5px; letter-spacing:.06em; text-transform:uppercase; color:var(--ink-soft); margin:0 0 8px; }
.q-title{ font-family:var(--font-display); font-size:24px; font-weight:600; margin:0 0 6px; }
[data-typewriter].is-typing::after{ content:''; display:inline-block; width:2px; height:1em; background:var(--ink); margin-left:2px; vertical-align:-.1em; animation:blink-caret .8s step-end infinite; }
@keyframes blink-caret{ 50%{ opacity:0; } }
@media (prefers-reduced-motion: reduce){ [data-typewriter].is-typing::after{ animation:none; } }
.q-help{ font-size:13.5px; color:var(--ink-soft); margin:0 0 22px; max-width:60ch; }

/* forms */
label.field-label{ display:block; font-size:13px; font-weight:600; margin-bottom:7px; }
.req{ color:var(--seal); font-weight:500; }
input[type=text], input[type=number], input[type=date], input[type=email], input[type=tel], input[type=password], textarea, select{
  width:100%; font-family:var(--font-body); font-size:15px; padding:10px 12px; border-radius:var(--radius-sm);
  border:1px solid var(--line); background:var(--surface); color:var(--ink); outline:none;
}
textarea{ resize:vertical; min-height:88px; }
input:focus, textarea:focus, select:focus{ border-color:var(--ink); box-shadow:0 0 0 3px rgba(27,42,68,.08); }
select{ appearance:none; background-image:linear-gradient(45deg,transparent 50%,var(--ink-soft) 50%),linear-gradient(135deg,var(--ink-soft) 50%,transparent 50%); background-position:calc(100% - 18px) center, calc(100% - 13px) center; background-size:5px 5px,5px 5px; background-repeat:no-repeat; padding-right:34px; }
.field-wrap{ margin-bottom:20px; max-width:460px; }
.field-wrap.wide{ max-width:none; }
.field-error{ color:var(--seal); font-size:12.5px; margin-top:6px; }
.field-hint{ color:var(--ink-soft); font-size:12px; margin-top:6px; }
.checkbox-row{ display:flex; align-items:center; gap:9px; font-size:13.5px; }
fieldset{ border:1px solid var(--line); border-radius:var(--radius); padding:18px 20px; margin:0 0 20px; }
legend{ font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.05em; color:var(--ink-soft); padding:0 6px; }

/* buttons */
.btn{ font-family:var(--font-body); font-size:14px; font-weight:600; padding:10px 18px; border-radius:var(--radius-sm); border:1px solid var(--ink); background:var(--ink); color:var(--paper); cursor:pointer; display:inline-flex; align-items:center; gap:6px; text-decoration:none; }
.btn:hover{ opacity:.92; }
.btn.ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn.ghost:hover{ border-color:var(--ink); opacity:1; }
.btn.danger{ background:var(--seal); border-color:var(--seal); }
.btn.small{ padding:6px 12px; font-size:12.5px; }
.btn:disabled{ opacity:.4; cursor:not-allowed; }
.btn-row{ display:flex; gap:10px; }
.nav-row{ display:flex; justify-content:space-between; align-items:center; margin-top:8px; }

/* tables */
table{ width:100%; border-collapse:collapse; font-size:13.5px; }
th,td{ text-align:left; padding:11px 12px; border-bottom:1px solid var(--line-soft); }
th{ font-size:11px; text-transform:uppercase; letter-spacing:.04em; color:var(--ink-soft); font-weight:600; }
tr:hover td{ background:var(--surface-2); }
.table-wrap{ overflow-x:auto; }
.table-actions{ display:flex; gap:10px; }
.table-actions a, .table-actions button{ font-size:12.5px; }

/* admin shell */
.admin-shell{ display:grid; grid-template-columns:220px 1fr; min-height:100vh; }
.admin-sidebar{ background:var(--ink); color:var(--paper); padding:26px 18px; display:flex; flex-direction:column; gap:26px; }
.admin-sidebar .brand-text .name{ color:var(--paper); }
.admin-sidebar .brand-text .tag{ color:#93A0BC; }
.admin-sidebar .mark{ border-color:var(--paper); color:var(--paper); }
.admin-nav{ display:flex; flex-direction:column; gap:2px; }
.admin-nav a{ text-decoration:none; color:#B9C2D6; font-size:13.5px; padding:9px 12px; border-radius:var(--radius-sm); }
.admin-nav a:hover{ background:rgba(255,255,255,.06); color:var(--paper); }
.admin-nav a.active{ background:var(--paper); color:var(--ink); font-weight:600; }
.admin-main{ padding:30px 36px 60px; }
.admin-topbar{ display:flex; justify-content:space-between; align-items:center; margin-bottom:24px; }
.admin-user{ font-size:13px; color:var(--ink-soft); display:flex; align-items:center; gap:12px; }

/* stats */
.stat-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(160px,1fr)); gap:14px; margin-bottom:26px; }
.stat-card{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:18px 20px; box-shadow:var(--shadow); }
.stat-card .k{ font-size:11px; text-transform:uppercase; letter-spacing:.05em; color:var(--ink-soft); margin-bottom:8px; }
.stat-card .v{ font-family:var(--font-display); font-size:30px; font-weight:600; }

/* type grid (wizard) */
.type-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); gap:12px; }
.type-card{ text-align:left; border:1px solid var(--line); background:var(--surface); border-radius:var(--radius); padding:16px; cursor:pointer; font-family:inherit; display:flex; gap:12px; align-items:flex-start; text-decoration:none; color:inherit; }
.type-card:hover{ border-color:var(--ink); background:var(--surface-2); }
.type-mono{ font-family:var(--font-mono); font-size:12px; font-weight:600; width:34px; height:34px; border-radius:6px; display:flex; align-items:center; justify-content:center; background:var(--surface-2); border:1px solid var(--line); flex-shrink:0; }
.type-card strong{ display:block; font-size:14.5px; margin-bottom:2px; }
.type-card span.desc{ font-size:12.5px; color:var(--ink-soft); }

/* stepper */
.shell{ display:grid; grid-template-columns:230px 1fr; gap:32px; align-items:start; }
@media (max-width:820px){ .shell{ grid-template-columns:1fr; } .stepper{ display:none; } }
.stepper{ display:flex; flex-direction:column; gap:2px; }
.step-item{ display:flex; align-items:baseline; gap:10px; padding:9px 10px; border-radius:var(--radius-sm); color:var(--ink-soft); font-size:13.5px; }
.step-item .n{ font-family:var(--font-mono); font-size:11.5px; width:16px; flex-shrink:0; }
.step-item.is-active{ background:var(--surface); color:var(--ink); font-weight:600; box-shadow:var(--shadow); }
.step-item.is-done{ color:var(--ink); }
.step-item.is-done .n{ color:var(--success); }

/* document sheet — reproduit le format contrat (en-tete institutionnel, corps a sections numerotees,
   bloc de signatures parapheur+cachet, verification QR, pied de page legal) */
.sheet-wrap{ display:flex; justify-content:center; }
.sheet{ position:relative; width:100%; max-width:700px; background:var(--surface); border:1px solid var(--line); border-radius:4px; box-shadow:var(--shadow); padding:40px 44px; font-size:13.5px; line-height:1.6; overflow:hidden; }
.sheet > *:not(.watermark-layer){ position:relative; }
.watermark-layer{ position:absolute; inset:0; z-index:0; pointer-events:none; -webkit-print-color-adjust:exact; print-color-adjust:exact; background-repeat:repeat-y; background-size:100% 950px; }
.sheet-head{ text-align:center; border-bottom:2px solid var(--ink); padding-bottom:16px; margin-bottom:20px; }
.sheet-logo{ max-height:56px; max-width:220px; display:block; margin:0 auto 10px; }
.sheet-institution{ font-family:var(--font-display); font-size:20px; font-weight:600; color:var(--ink); letter-spacing:.02em; }
.sheet-corp{ font-size:11px; color:var(--ink-soft); margin-top:3px; }
.sheet-doctitle{ font-family:var(--font-display); font-size:17px; font-weight:600; color:var(--ink); text-transform:uppercase; letter-spacing:.12em; margin:12px 0 4px; }
.sheet-ref{ font-family:var(--font-mono); font-size:12px; color:var(--seal); font-weight:600; }
.sheet-dates{ font-size:11px; color:var(--ink-soft); margin-top:2px; }
.sheet-body{ font-size:13.5px; line-height:1.7; }

.sheet-signatures{ margin-top:34px; }
.sig-table{ width:100%; border-collapse:collapse; }
.sig-table td.sig-col{ width:50%; vertical-align:bottom; padding:0 20px 0 0; }
.sig-table td.sig-col + td.sig-col{ padding:0 0 0 20px; }
.sig-role{ font-size:11px; color:var(--ink-soft); margin-bottom:4px; }
.sig-squiggle{ color:var(--ink); min-height:40px; }
.sig-line-wrap{ border-bottom:1px solid var(--ink-soft); min-height:34px; text-align:center; }
.sig-stamp{ margin-top:-38px; opacity:.88; }
.sig-caption{ font-size:10.5px; color:var(--ink-soft); margin-top:5px; }

.sheet-verify{ display:flex; align-items:center; gap:12px; margin-top:24px; }
.sheet-verify-cap{ font-size:10.5px; color:var(--ink-soft); line-height:1.5; }

.sheet-footer{ margin-top:26px; font-size:10px; color:var(--ink-soft); text-align:center; border-top:1px solid var(--line-soft); padding-top:12px; line-height:1.6; }

/* sections du corps de document (utilisables dans les modeles admin) */
.sheet-body h2{ font-family:var(--font-body); font-size:14px; font-weight:700; color:var(--ink); margin:22px 0 9px; padding-bottom:6px; border-bottom:1px solid var(--line); letter-spacing:.01em; }
.sheet-body p{ margin:0 0 9px; text-align:justify; }
.sheet-body table{ width:100%; border-collapse:collapse; margin:9px 0 16px; font-size:12.5px; }
.sheet-body td, .sheet-body th{ padding:7px 10px; vertical-align:top; }
.info-table{ border:1.5px solid var(--ink); }
.info-table th{ background:var(--ink); color:#fff; text-align:left; font-size:11.5px; }
.info-table td:first-child{ color:var(--ink-soft); width:52%; }
.info-table td:last-child{ font-weight:600; }
.info-table tr{ border-bottom:1px solid var(--line-soft); }
.parties-table td{ background:var(--surface-2); border:1px solid var(--line); width:50%; padding:12px 14px; }
.schedule-table{ font-variant-numeric:tabular-nums; }
.schedule-table th{ background:var(--ink); color:#fff; text-align:right; font-size:11px; }
.schedule-table th:first-child{ text-align:center; }
.schedule-table td{ text-align:right; border-bottom:1px solid var(--line-soft); font-size:11px; }
.schedule-table td:first-child{ text-align:center; font-weight:600; color:var(--ink); }
.schedule-table tbody tr:nth-child(even) td{ background:var(--surface-2); }
.schedule-table tfoot td{ font-weight:700; background:var(--surface-2); border-top:2px solid var(--ink); }
.ibox{ border-left:3px solid var(--ink); background:var(--surface-2); padding:10px 14px; margin:9px 0; font-size:12.5px; color:var(--ink); }
.wbox{ border-left:3px solid var(--seal); background:var(--seal-soft); padding:10px 14px; margin:9px 0; font-size:12.5px; color:var(--seal); }

/* signature pad */
.sig-pad-wrap{ border:1px dashed var(--line); border-radius:var(--radius); background:var(--surface-2); padding:14px; max-width:460px; }
canvas.sig-pad{ width:100%; height:150px; background:var(--surface); border-radius:6px; border:1px solid var(--line); touch-action:none; cursor:crosshair; }
.sig-tools{ display:flex; justify-content:space-between; align-items:center; margin-top:10px; }
.sig-hint{ font-size:12px; color:var(--ink-soft); }
.link-btn{ background:none; border:none; font-family:inherit; font-size:12.5px; font-weight:600; color:var(--ink-soft); cursor:pointer; text-decoration:underline; text-underline-offset:2px; }

.alert{ padding:12px 16px; border-radius:var(--radius-sm); font-size:13.5px; margin-bottom:16px; }
.alert.success{ background:var(--success-soft); color:var(--success); }
.alert.error{ background:var(--seal-soft); color:var(--seal); }
.alert.info{ background:var(--surface-2); color:var(--ink-soft); border:1px solid var(--line); }

.empty-state{ text-align:center; padding:50px 20px; color:var(--ink-soft); }
.muted{ color:var(--ink-soft); }
.mono{ font-family:var(--font-mono); }

/* chat wizard — collecte conversationnelle des reponses, style Messenger premium.
   Double-bezel : .chat-frame (plateau exterieur) contient .chat-shell (panneau vitre interieur)
   pour un effet de profondeur physique plutot qu'un simple panneau plat. */
:root{
  --chat-ease:cubic-bezier(.22,.9,.32,1);
  --chat-glow: 0 24px 60px -20px rgba(27,42,68,.28), 0 2px 8px rgba(27,42,68,.06);
}

.chat-frame{ max-width:660px; margin:0 auto; padding:7px; background:linear-gradient(165deg, var(--surface-2), var(--line-soft)); border-radius:calc(var(--radius) + 14px); box-shadow:var(--chat-glow); }
.chat-shell{ background:var(--surface); border:1px solid var(--line-soft); border-radius:calc(var(--radius) + 8px); box-shadow:inset 0 1px 0 rgba(255,255,255,.6); display:flex; flex-direction:column; height:min(680px, 76vh); overflow:hidden; }

.chat-head{ display:flex; align-items:center; gap:12px; padding:16px 20px; border-bottom:1px solid var(--line-soft); flex-shrink:0; background:linear-gradient(var(--surface), var(--surface-2)); }
.chat-avatar{ position:relative; width:40px; height:40px; flex-shrink:0; }
.chat-avatar-mark{ position:absolute; inset:0; border-radius:50%; background:var(--ink); color:var(--paper); display:flex; align-items:center; justify-content:center; font-family:var(--font-display); font-weight:600; font-size:13px; box-shadow:0 3px 10px -3px rgba(27,42,68,.5); transition:transform .5s var(--chat-ease); }
.chat-avatar-status{ position:absolute; right:-1px; bottom:-1px; width:11px; height:11px; border-radius:50%; background:var(--success); border:2px solid var(--surface); transition:background-color .3s var(--chat-ease); }
.chat-avatar.is-thinking .chat-avatar-mark{ animation:avatar-breathe 1.4s var(--chat-ease) infinite; }
.chat-avatar.is-thinking .chat-avatar-status{ background:var(--warning); animation:status-blink 1.4s ease infinite; }
.chat-avatar::before{ content:''; position:absolute; inset:-6px; border-radius:50%; border:1.5px solid var(--ink); opacity:0; transform:scale(.85); transition:opacity .4s var(--chat-ease), transform .4s var(--chat-ease); }
.chat-avatar.is-thinking::before{ opacity:.16; transform:scale(1); animation:avatar-ring 1.4s var(--chat-ease) infinite; }
@keyframes avatar-breathe{ 0%,100%{ transform:scale(1); } 50%{ transform:scale(1.07); } }
@keyframes avatar-ring{ 0%{ opacity:.3; transform:scale(.9); } 100%{ opacity:0; transform:scale(1.35); } }
@keyframes status-blink{ 0%,100%{ opacity:1; } 50%{ opacity:.4; } }

.chat-head-text{ flex:1; min-width:0; }
.chat-head-title{ font-weight:600; font-size:14.5px; }
.chat-head-sub{ font-size:12px; color:var(--ink-soft); margin-top:1px; transition:opacity .25s var(--chat-ease); }
.chat-head-sub.is-typing-label{ color:var(--warning); font-weight:500; }

.chat-back-btn{
  display:flex; align-items:center; gap:5px; flex-shrink:0; font-family:var(--font-body); font-size:12.5px; font-weight:600;
  padding:8px 13px 8px 11px; border-radius:100px; border:1px solid var(--line); background:var(--surface); color:var(--ink-soft);
  cursor:pointer; transition:transform .25s var(--chat-ease), box-shadow .25s var(--chat-ease), background-color .25s var(--chat-ease), color .25s var(--chat-ease), opacity .25s var(--chat-ease);
}
.chat-back-btn span{ font-size:14px; transition:transform .25s var(--chat-ease); }
.chat-back-btn:hover:not(:disabled){ background:var(--surface-2); color:var(--ink); border-color:var(--ink); }
.chat-back-btn:hover:not(:disabled) span{ transform:translateX(-2px); }
.chat-back-btn:active:not(:disabled){ transform:scale(.96); }
.chat-back-btn:disabled{ opacity:0; visibility:hidden; }
@media (max-width:420px){ .chat-back-btn{ font-size:0; padding:9px; } .chat-back-btn span{ font-size:15px; } }

.chat-log{ flex:1; overflow-y:auto; padding:22px 20px; display:flex; flex-direction:column; gap:12px; scroll-behavior:smooth; background:
    radial-gradient(circle at 100% 0%, rgba(27,42,68,.035), transparent 45%),
    radial-gradient(circle at 0% 100%, rgba(27,42,68,.03), transparent 40%);
}

.chat-row{ display:flex; }
.chat-row.from-bot{ justify-content:flex-start; }
.chat-row.from-user{ justify-content:flex-end; }
.chat-bubble{
  max-width:78%; padding:11px 15px; border-radius:18px; font-size:14px; line-height:1.5;
  white-space:pre-wrap; word-wrap:break-word;
  animation:bubble-in .5s var(--chat-ease) backwards;
}
.chat-row.from-bot .chat-bubble{ background:var(--surface-2); color:var(--ink); border-bottom-left-radius:5px; box-shadow:inset 0 1px 0 rgba(255,255,255,.7), 0 1px 2px rgba(27,42,68,.05); }
.chat-row.from-user .chat-bubble{ background:linear-gradient(155deg,#22314F,var(--ink)); color:var(--paper); border-bottom-right-radius:5px; box-shadow:0 6px 16px -8px rgba(27,42,68,.55); }
.chat-bubble .chat-help{ display:block; font-size:12px; color:var(--ink-soft); margin-top:4px; }
.chat-row.from-user .chat-bubble .chat-help{ color:#B9C2D6; }
.chat-bubble.chat-error{ background:var(--seal-soft); color:var(--seal); box-shadow:none; }
@keyframes bubble-in{ from{ opacity:0; transform:translateY(10px) scale(.98); filter:blur(3px); } to{ opacity:1; transform:none; filter:blur(0); } }
@media (prefers-reduced-motion: reduce){ .chat-bubble{ animation:none; } }

/* indicateur "l'assistant reflechit" — pastille avatar + bulle a 3 points qui respirent */
.chat-typing .chat-bubble{ display:flex; align-items:center; gap:5px; padding:14px 18px; background:var(--surface-2); box-shadow:inset 0 1px 0 rgba(255,255,255,.7); }
.chat-typing .dot{ width:6.5px; height:6.5px; border-radius:50%; background:var(--ink-soft); animation:typing-dot 1.2s var(--chat-ease) infinite; }
.chat-typing .dot:nth-child(2){ animation-delay:.16s; }
.chat-typing .dot:nth-child(3){ animation-delay:.32s; }
@keyframes typing-dot{ 0%,60%,100%{ opacity:.3; transform:translateY(0) scale(.85); } 30%{ opacity:1; transform:translateY(-4px) scale(1); } }

.chat-recap{ background:var(--surface); border:1px solid var(--line); border-radius:16px; padding:6px 16px; margin-top:2px; box-shadow:0 1px 2px rgba(27,42,68,.04); }
.chat-recap-row{ display:flex; justify-content:space-between; align-items:baseline; gap:14px; padding:11px 0; border-bottom:1px solid var(--line-soft); font-size:13px; }
.chat-recap-row:last-child{ border-bottom:none; }
.chat-recap-row .k{ color:var(--ink-soft); }
.chat-recap-row .v{ font-weight:600; text-align:right; }
.chat-recap-edit{ background:none; border:none; color:var(--ink-soft); cursor:pointer; font-size:11.5px; padding:2px 0; margin-left:10px; flex-shrink:0; border-bottom:1px solid var(--line); transition:color .2s var(--chat-ease), border-color .2s var(--chat-ease); }
.chat-recap-edit:hover{ color:var(--ink); border-color:var(--ink); }

.chat-dock{ border-top:1px solid var(--line-soft); padding:14px 16px; flex-shrink:0; background:var(--surface); }
.chat-quick{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:10px; }
.chat-quick:empty{ display:none; margin:0; }
.chat-quick-btn{
  font-family:var(--font-body); font-size:13.5px; font-weight:600; padding:9px 17px; border-radius:100px;
  border:1px solid var(--line); background:var(--surface); color:var(--ink); cursor:pointer;
  transition:transform .25s var(--chat-ease), box-shadow .25s var(--chat-ease), background-color .25s var(--chat-ease), border-color .25s var(--chat-ease), color .25s var(--chat-ease);
  animation:bubble-in .45s var(--chat-ease) backwards;
}
.chat-quick-btn:nth-child(1){ animation-delay:.05s; } .chat-quick-btn:nth-child(2){ animation-delay:.1s; }
.chat-quick-btn:nth-child(3){ animation-delay:.15s; } .chat-quick-btn:nth-child(4){ animation-delay:.2s; }
.chat-quick-btn:hover:not(:disabled){ background:var(--ink); color:var(--paper); border-color:var(--ink); transform:translateY(-2px); box-shadow:0 8px 16px -8px rgba(27,42,68,.4); }
.chat-quick-btn:active:not(:disabled){ transform:translateY(0) scale(.97); }
.chat-quick-btn.primary{ background:var(--ink); color:var(--paper); border-color:var(--ink); }
.chat-quick-btn.primary:hover:not(:disabled){ opacity:.92; transform:translateY(-2px); }
.chat-quick-btn:disabled{ opacity:.45; cursor:not-allowed; }

.chat-input-row{ display:flex; align-items:flex-end; gap:10px; }
.chat-input{
  flex:1; resize:none; max-height:120px; font-family:var(--font-body); font-size:14.5px; padding:11px 16px;
  border-radius:22px; border:1px solid var(--line); background:var(--surface-2); color:var(--ink); outline:none; line-height:1.4;
  transition:border-color .25s var(--chat-ease), background-color .25s var(--chat-ease), box-shadow .25s var(--chat-ease);
}
.chat-input:focus{ border-color:var(--ink); background:var(--surface); box-shadow:0 0 0 4px rgba(27,42,68,.07); }
.chat-input:disabled{ opacity:.6; }

.chat-send{
  width:42px; height:42px; border-radius:50%; border:none; background:var(--surface-2); color:var(--ink-soft); font-size:15px;
  cursor:pointer; flex-shrink:0; display:flex; align-items:center; justify-content:center;
  transition:background-color .3s var(--chat-ease), color .3s var(--chat-ease), transform .3s var(--chat-ease), box-shadow .3s var(--chat-ease);
}
.chat-send-arrow{ display:inline-block; transform:translateX(-1px); transition:transform .3s var(--chat-ease); }
.chat-send.is-ready{ background:var(--ink); color:var(--paper); box-shadow:0 6px 14px -6px rgba(27,42,68,.55); }
.chat-send.is-ready .chat-send-arrow{ transform:translateX(0); }
.chat-send.is-ready:hover{ transform:scale(1.06); }
.chat-send:active:not(:disabled){ transform:scale(.94); }
.chat-send:disabled{ opacity:.5; cursor:not-allowed; }
.chat-input-row.is-hidden{ display:none; }

@media (max-width:680px){
  .container:has(.chat-frame){ padding:0; max-width:none; }
  .container:has(.chat-frame) .letterhead{ padding:14px 16px 12px; margin-bottom:0; }
  .chat-frame{ padding:0; border-radius:0; box-shadow:none; background:none; max-width:none; }
  .chat-shell{ height:calc(100dvh - 78px); border-radius:0; border:none; }
}