:root{
  --brand:#1F5A50;
  --brand-ink:#FFFFFF;
  --link:#1F5A50;
  --accent:#B87E1E;
  --bg:#ECEAE0;
  --surface:#FBFAF5;
  --surface-2:#E2DFD0;
  --border:#CFCABA;
  --text:#1D2B25;
  --text-muted:#5B6961;
  --me-bg:#D6EBD3;
  --danger:#9A4B2C;
  --danger-bg:#F0DCCE;
  --ok-bg:#DCEAE6;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Noto Sans Devanagari",sans-serif;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --brand:#2C7A6B; --link:#7CCBB9; --accent:#E7B04A; --bg:#141F1A; --surface:#1B2822; --surface-2:#233229;
    --border:#33463B; --text:#E9EAE2; --text-muted:#9FAEA5; --me-bg:#1F4A40; --danger:#D28A62; --danger-bg:#33231A; --ok-bg:#1B332E;
  }
}
:root[data-theme="dark"]{
  --brand:#2C7A6B; --link:#7CCBB9; --accent:#E7B04A; --bg:#141F1A; --surface:#1B2822; --surface-2:#233229;
  --border:#33463B; --text:#E9EAE2; --text-muted:#9FAEA5; --me-bg:#1F4A40; --danger:#D28A62; --danger-bg:#33231A; --ok-bg:#1B332E;
}

*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.4;-webkit-text-size-adjust:100%}
button,input{font:inherit;color:inherit}
button{cursor:pointer}
[hidden]{display:none!important}

#app{max-width:520px;height:100%;margin:0 auto;background:var(--surface);display:flex;flex-direction:column;position:relative}
@media (min-width:560px){ #app{box-shadow:0 0 0 1px var(--border)} }

/* --- header bar --- */
.bar{background:var(--brand);color:var(--brand-ink);display:flex;align-items:center;gap:12px;
  padding:calc(12px + env(safe-area-inset-top)) 16px 12px}
.bar h1{font-size:1.25rem;margin:0;flex:1;font-weight:650}
.bar .sub{font-size:.8rem;opacity:.85;font-weight:400;display:block}
.icon-btn{background:none;border:0;color:inherit;font-size:1.4rem;line-height:1;padding:6px 8px;border-radius:8px;min-width:40px;min-height:40px}
.icon-btn:active{background:rgba(255,255,255,.18)}

/* --- auth screens --- */
.auth{flex:1;overflow:auto;padding:calc(32px + env(safe-area-inset-top)) 24px calc(24px + env(safe-area-inset-bottom));display:flex;flex-direction:column}
.logo{width:84px;height:84px;border-radius:20px;margin:8px auto 12px;display:block}
.auth h1{text-align:center;margin:0;font-size:1.6rem}
.tagline{text-align:center;color:var(--text-muted);margin:4px 0 28px}
.auth h2{margin:0 0 6px;font-size:1.15rem}
.lead{color:var(--text-muted);margin:0 0 18px;font-size:.95rem}
label.field{display:block;margin:0 0 14px;font-size:.85rem;color:var(--text-muted)}
label.field input{display:block;width:100%;margin-top:4px;padding:12px;font-size:1rem;color:var(--text);
  background:var(--bg);border:1px solid var(--border);border-radius:10px}
label.field input:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:transparent}
.phone-row{display:flex;gap:8px;margin-top:4px}
.phone-row .cc{padding:12px;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;color:var(--text)}
.phone-row input{margin-top:0}
.otp input{text-align:center;letter-spacing:.6em;font-size:1.5rem}
.btn{display:block;width:100%;padding:13px;border:0;border-radius:10px;background:var(--brand);color:var(--brand-ink);font-weight:600;font-size:1rem}
.btn:disabled{opacity:.55;cursor:default}
.btn.secondary{background:none;color:var(--link);font-weight:500;margin-top:6px}
.hint{font-size:.8rem;color:var(--text-muted);text-align:center;margin:14px 0 0}
.error{background:var(--danger-bg);color:var(--danger);padding:10px 12px;border-radius:10px;margin:0 0 14px;font-size:.9rem}

/* --- chat list --- */
.list{flex:1;overflow:auto;list-style:none;margin:0;padding:0}
.chat-row{display:flex;align-items:center;gap:14px;padding:12px 16px;width:100%;border:0;background:none;text-align:left;border-bottom:1px solid var(--border)}
.chat-row:active{background:var(--surface-2)}
.avatar{width:48px;height:48px;border-radius:50%;background:var(--brand);color:var(--brand-ink);display:grid;place-items:center;font-weight:700;font-size:.95rem;flex:none}
.bar .avatar{background:rgba(255,255,255,.22)}
.avatar.sm{width:40px;height:40px;font-size:.8rem}
.chat-row .meta{flex:1;min-width:0}
.chat-row b{display:block}
.chat-row span.preview{flex:1;min-width:0;color:var(--text-muted);font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* --- chat view --- */
.chat-log{flex:1;overflow:auto;padding:12px 10px;background:var(--bg);display:flex;flex-direction:column;gap:6px}
.chat-empty{margin:auto;text-align:center;color:var(--text-muted);max-width:280px}
.bubble-row{display:flex}
.bubble-row.right{justify-content:flex-end}
.bubble{position:relative;max-width:82%;padding:7px 10px 4px;border-radius:12px;word-wrap:break-word;overflow-wrap:anywhere;box-shadow:0 1px 1px rgba(0,0,0,.12)}
.bubble.bot{background:var(--surface);border-top-left-radius:3px}
.bubble.me{background:var(--me-bg);border-top-right-radius:3px}
.bubble.err{background:var(--danger-bg);color:var(--danger)}
.bubble.pending{opacity:.6}
.bubble .text{white-space:pre-wrap}
.bubble .ts{display:block;text-align:right;font-size:.68rem;color:var(--text-muted);margin-top:2px}
.bubble .quote{border-left:3px solid var(--accent);background:rgba(0,0,0,.06);padding:3px 8px;margin:0 0 5px;border-radius:4px;font-size:.82rem;color:var(--text-muted)}
.reply-arrow{position:absolute;right:-34px;top:50%;transform:translateY(-50%);width:30px;height:30px;border-radius:50%;border:0;background:var(--surface-2);color:var(--text-muted);font-size:1rem}
.bubble-row.left .bubble:has(.reply-arrow){margin-right:34px}
.reply-chip{display:flex;gap:8px;align-items:center;padding:8px 12px;background:var(--surface-2);border-left:4px solid var(--accent);font-size:.85rem;color:var(--text-muted)}
.reply-chip span{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.reply-chip button{border:0;background:none;font-size:1rem;color:var(--text-muted)}
.typing{display:inline-flex;gap:4px;padding:6px 2px}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--text-muted);animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.25}30%{opacity:1}}
.chat-row .line{display:flex;align-items:center;gap:8px}
.chat-row .line b{flex:1}
.chat-row .time{color:var(--text-muted);font-size:.75rem}
.chat-row .time.unread{color:var(--link);font-weight:600}
.badge{background:var(--brand);color:var(--brand-ink);border-radius:11px;min-width:22px;height:22px;display:grid;place-items:center;font-size:.75rem;padding:0 6px;flex:none}
.composer{display:flex;gap:8px;padding:8px 8px calc(8px + env(safe-area-inset-bottom));background:var(--surface-2)}
.composer input{flex:1;padding:11px 14px;border-radius:22px;border:1px solid var(--border);background:var(--surface);color:var(--text)}
.composer button{width:44px;border:0;border-radius:50%;background:var(--brand);color:var(--brand-ink);font-size:1.1rem}
.composer :disabled{opacity:.55}
.composer .mic{background:var(--surface);border:1px solid var(--border);color:var(--text)}
.rec-overlay{position:fixed;inset:0;z-index:50;background:var(--surface-2);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:24px;text-align:center}
.rec-pulse{width:96px;height:96px;border-radius:50%;background:var(--brand);color:var(--brand-ink);display:grid;place-items:center;font-size:2.4rem;animation:rec-pulse 1.2s ease-in-out infinite}
.rec-overlay.busy .rec-pulse{animation:none;opacity:.6}
@keyframes rec-pulse{50%{transform:scale(1.12);box-shadow:0 0 0 14px color-mix(in srgb,var(--brand) 22%,transparent)}}
.rec-time{font-size:1.8rem;font-variant-numeric:tabular-nums}
.rec-status{margin:0;opacity:.8}
.rec-stop{width:72px;height:72px;border-radius:50%;border:0;background:#c0392b;color:#fff;font-size:1.6rem}
.rec-cancel{background:none;border:0;color:var(--text);text-decoration:underline;font-size:1rem;padding:8px}

/* --- suppliers --- */
.pad{padding:16px;overflow:auto;flex:1}
.card{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:14px;margin:0 0 16px}
.card h2{margin:0 0 10px;font-size:1rem}
.sup{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--border)}
.sup:last-child{border-bottom:0}
.sup .meta{flex:1;min-width:0}
.sup small{display:block;color:var(--text-muted)}
.link-btn{background:none;border:0;color:var(--danger);padding:8px;font-size:.85rem}
.empty{color:var(--text-muted);text-align:center;padding:12px 0;margin:0}

/* --- menu, install banner, toast --- */
.menu{position:absolute;top:calc(56px + env(safe-area-inset-top));right:8px;background:var(--surface);border:1px solid var(--border);
  border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.25);min-width:200px;z-index:5;overflow:hidden}
.menu button{display:block;width:100%;padding:13px 16px;border:0;background:none;text-align:left}
.menu button:active{background:var(--surface-2)}
.banner{background:var(--ok-bg);padding:10px 14px;font-size:.85rem;display:flex;gap:10px;align-items:center}
.banner span{flex:1}
.banner button{border:0;background:none;color:var(--link);font-weight:600;padding:6px}
#toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));transform:translateX(-50%) translateY(20px);
  background:#222;color:#fff;padding:10px 16px;border-radius:20px;font-size:.9rem;opacity:0;pointer-events:none;transition:.2s;max-width:90vw;z-index:10}
#toast.show{opacity:1;transform:translateX(-50%)}

.chat-row b .role{font-weight:400;color:var(--text-muted)}
img.avatar{background:none;object-fit:cover}
.confirm-actions{display:flex;gap:8px;margin:8px 0 2px}
.confirm-actions button{flex:1;padding:8px 10px;border-radius:18px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:.9rem}
.confirm-actions .yes{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}