/* CasaStroy — ИИ-консультант (токены как на casastroy.md) */
.csai{--cs-navy:#26325C;--cs-dark:#0B1F33;--cs-accent:#FF5112;--cs-btn:#C2410C;--cs-btn-h:#9A3412;--cs-muted:#5E6684;--cs-line:#E3E6EE;--cs-soft:#F6F7FA;--cs-peach:#FFF0E8;
  font-family:"Fira Sans",Tahoma,system-ui,sans-serif;color:var(--cs-navy);font-size:15px;line-height:1.45}
.csai *,.csai *::before,.csai *::after{box-sizing:border-box}
.csai [hidden]{display:none!important}
.csai-sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* плавающая кнопка */
.csai--float{position:fixed;bottom:20px;z-index:1050;display:flex;flex-direction:column;gap:10px}
.csai--right{right:20px;align-items:flex-end}
.csai--left{left:20px;align-items:flex-start}
.csai-launch{display:inline-flex;align-items:center;gap:10px;border:0;cursor:pointer;background:var(--cs-btn);color:#fff;font:600 15px/1 inherit;font-family:inherit;
  padding:14px 18px;border-radius:999px;box-shadow:0 10px 28px rgba(194,65,12,.35);transition:background .15s,transform .15s}
.csai-launch:hover{background:var(--cs-btn-h)}
.csai-launch:focus-visible,.csai button:focus-visible,.csai a:focus-visible{outline:3px solid #FDBA74;outline-offset:2px}
.csai.is-open .csai-launch{display:none}
.csai-teaser{position:relative;max-width:260px;background:#fff;color:var(--cs-navy);border:1px solid var(--cs-line);border-radius:14px 14px 4px 14px;padding:12px 30px 12px 14px;
  box-shadow:0 8px 24px rgba(11,31,51,.12);cursor:pointer;font-size:14px}
.csai--left .csai-teaser{border-radius:14px 14px 14px 4px}
.csai-teaser-x{position:absolute;top:4px;right:6px;border:0;background:none;color:var(--cs-muted);font-size:18px;cursor:pointer;line-height:1;padding:4px}

/* окно */
.csai-panel{display:flex;flex-direction:column;background:#fff;border:1px solid var(--cs-line);border-radius:16px;overflow:hidden;box-shadow:0 18px 50px rgba(11,31,51,.18)}
.csai--float .csai-panel{width:380px;height:min(620px,calc(100vh - 40px))}
.csai--inline .csai-panel{height:560px;box-shadow:0 6px 24px rgba(11,31,51,.06);margin:0 0 32px}
.csai-head{display:flex;align-items:center;gap:10px;background:var(--cs-navy);color:#fff;padding:12px 12px 12px 14px}
.csai-ava{flex:none;width:38px;height:38px;border-radius:50%;background:var(--cs-accent);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.csai-head-text{flex:1;min-width:0;display:flex;flex-direction:column}
.csai-head-text strong{font-size:16px;line-height:1.2}
.csai-head-text span{font-size:12.5px;color:#C9CFE3;line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.csai-lead-open{flex:none;border:1px solid rgba(255,255,255,.45);background:transparent;color:#fff;font:600 12.5px/1 inherit;font-family:inherit;padding:8px 10px;border-radius:8px;cursor:pointer}
.csai-lead-open:hover{background:rgba(255,255,255,.12)}
.csai-x{flex:none;border:0;background:none;color:#fff;font-size:26px;line-height:1;cursor:pointer;padding:2px 6px;border-radius:6px}
.csai-x:hover{background:rgba(255,255,255,.12)}

.csai-log{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px;background:var(--cs-soft);overscroll-behavior:contain}
.csai-msg{max-width:88%;padding:10px 12px;border-radius:14px;word-wrap:break-word;overflow-wrap:anywhere}
.csai-msg p{margin:0 0 6px}.csai-msg p:last-child{margin:0}
.csai-msg ul{margin:4px 0 6px;padding-left:20px}.csai-msg li{margin:2px 0}
.csai-msg a{color:var(--cs-btn);font-weight:600}
.csai-msg--bot{align-self:flex-start;background:#fff;border:1px solid var(--cs-line);border-bottom-left-radius:4px}
.csai-msg--user{align-self:flex-end;background:var(--cs-peach);border-bottom-right-radius:4px;color:var(--cs-dark)}
.csai-msg--err{border-color:#FCA5A5;background:#FEF2F2;color:#991B1B}
.csai-msg--form{max-width:100%;width:100%}
.csai-dots{display:inline-flex;gap:4px;padding:4px 0}
.csai-dots i{width:7px;height:7px;border-radius:50%;background:var(--cs-muted);opacity:.4;animation:csai-b 1.2s infinite}
.csai-dots i:nth-child(2){animation-delay:.2s}.csai-dots i:nth-child(3){animation-delay:.4s}
@keyframes csai-b{0%,80%,100%{opacity:.25;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}
@media (prefers-reduced-motion:reduce){.csai-dots i{animation:none;opacity:.7}.csai-launch{transition:none}}

.csai-quick{display:flex;flex-wrap:wrap;gap:6px;padding:8px 12px 0;background:var(--cs-soft)}
.csai-chip{border:1px solid #FDBA74;background:#fff;color:var(--cs-btn);font:500 13.5px/1.25 inherit;font-family:inherit;padding:7px 11px;border-radius:999px;cursor:pointer;text-align:left}
.csai-chip:hover{background:var(--cs-peach)}

.csai-input{display:flex;gap:8px;align-items:flex-end;padding:10px 12px;border-top:1px solid var(--cs-line);background:#fff}
.csai-input textarea{flex:1;resize:none;border:1px solid var(--cs-line);border-radius:12px;padding:10px 12px;font:15px/1.4 inherit;font-family:inherit;color:var(--cs-dark);min-height:42px;max-height:120px;background:#fff}
.csai-input textarea:focus{outline:none;border-color:var(--cs-accent);box-shadow:0 0 0 3px rgba(255,81,18,.15)}
.csai-send{flex:none;width:42px;height:42px;border:0;border-radius:12px;background:var(--cs-btn);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center}
.csai-send:hover{background:var(--cs-btn-h)}.csai-send:disabled{opacity:.5;cursor:wait}
.csai-note{margin:0;padding:0 12px 10px;background:#fff;font-size:11.5px;color:var(--cs-muted);line-height:1.35}

/* заявка */
.csai-lead{display:flex;flex-direction:column;gap:8px}
.csai-lead-title{margin:0;font-weight:700;color:var(--cs-dark);font-size:16px}
.csai-lead-sub{margin:0 0 2px;color:var(--cs-muted);font-size:13.5px}
.csai-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.csai-lead label{display:flex;flex-direction:column;gap:3px;font-size:13px;color:var(--cs-muted);min-width:0}
.csai-lead label b{color:var(--cs-btn)}
.csai-lead input,.csai-lead select,.csai-lead textarea{width:100%;border:1px solid var(--cs-line);border-radius:8px;padding:8px 10px;font:14.5px/1.3 inherit;font-family:inherit;color:var(--cs-dark);background:#fff;min-height:38px}
.csai-lead input:focus,.csai-lead select:focus,.csai-lead textarea:focus{outline:none;border-color:var(--cs-accent);box-shadow:0 0 0 3px rgba(255,81,18,.15)}
.csai-lead .is-bad{border-color:#DC2626!important}
.csai-lead .csai-consent{flex-direction:row;align-items:flex-start;gap:8px;color:var(--cs-navy);font-size:12.5px;padding:2px;border-radius:6px}
.csai-lead .csai-consent input{width:18px;height:18px;min-height:0;flex:none;margin:1px 0 0;accent-color:var(--cs-btn)}
.csai-lead .csai-consent.is-bad{outline:2px solid #DC2626}
.csai-hp{position:absolute!important;left:-9999px;width:1px;height:1px;overflow:hidden}
.csai-lead-err{color:#B91C1C;font-size:13px;min-height:0}
.csai-lead-err:empty{display:none}
.csai-lead-send{border:0;border-radius:10px;background:var(--cs-btn);color:#fff;font:700 15px/1 inherit;font-family:inherit;padding:13px 16px;cursor:pointer}
.csai-lead-send:hover{background:var(--cs-btn-h)}.csai-lead-send:disabled{opacity:.6;cursor:wait}

/* телефоны: окно на весь экран */
@media (max-width:520px){
  .csai--float{bottom:14px}
  .csai--right{right:14px}.csai--left{left:14px}
  .csai--float.is-open{inset:0;bottom:0}
  .csai--float .csai-panel{position:fixed;inset:0;width:100%;height:100%;height:100dvh;border-radius:0;border:0}
  .csai-launch-text{display:none}
  .csai-launch{padding:16px;border-radius:50%}
  .csai-row{grid-template-columns:1fr}
  .csai-head-text span{display:none}
  .csai-input textarea{font-size:16px}
}
@media print{.csai--float{display:none}}