/* Naibyte demo bots: WhatsApp-style chat */
:root{
  --wa-green:#075e54;--wa-teal:#008069;--wa-light:#25d366;
  --bg:#efeae2;--in:#ffffff;--out:#d9fdd3;--ink:#111b21;--muted:#667781;
  --shop:#008069;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:#0a0f0c;-webkit-text-size-adjust:100%}
button{font:inherit;cursor:pointer}
.app{display:flex;flex-direction:column;height:100vh;height:100dvh;max-width:520px;margin:0 auto;background:var(--bg);position:relative;overflow:hidden}
@media (min-width:560px){
  body{background:radial-gradient(circle at 20% 10%,#13a45633,transparent 40%),#0a0f0c;padding:24px 0}
  .app{height:calc(100dvh - 48px);border-radius:22px;box-shadow:0 20px 60px rgba(0,0,0,.45)}
}

.chat-head{display:flex;align-items:center;gap:10px;padding:10px 12px;padding-top:max(10px,env(safe-area-inset-top));background:var(--wa-teal);color:#fff}
.back,.restart{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;color:#fff;background:transparent;border:0}
.back:hover,.restart:hover{background:rgba(255,255,255,.12)}
.back svg,.restart svg{width:22px;height:22px}
.restart[hidden]{display:none}
.avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;font-size:22px;background:var(--shop);box-shadow:0 0 0 2px rgba(255,255,255,.25)}
.who{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.2}
.who strong{font-size:1.02rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.who span{font-size:.8rem;opacity:.85}

.demo-note{font-size:.75rem;text-align:center;padding:6px 12px;background:#fff8c5;color:#5c4b00}
.demo-note a{color:inherit;font-weight:600}

.thread{flex:1;overflow-y:auto;padding:12px 10px 16px;display:flex;flex-direction:column;gap:4px;
  background-color:var(--bg);
  background-image:radial-gradient(rgba(0,0,0,.035) 1px,transparent 1px);background-size:18px 18px;overscroll-behavior:contain}
.day-chip{align-self:center;background:#fff;color:var(--muted);font-size:.75rem;padding:4px 10px;border-radius:8px;box-shadow:0 1px .5px rgba(0,0,0,.13);margin:4px 0 8px}
.e2e{align-self:center;max-width:88%;text-align:center;background:#ffeecd;color:#54656f;font-size:.75rem;padding:6px 10px;border-radius:8px;margin-bottom:10px}

.msg{max-width:84%;padding:6px 8px 4px 9px;border-radius:8px;font-size:.94rem;line-height:1.38;box-shadow:0 1px .5px rgba(0,0,0,.13);position:relative;word-wrap:break-word;animation:pop .16s ease-out}
.msg.in{align-self:flex-start;background:var(--in);border-top-left-radius:0}
.msg.out{align-self:flex-end;background:var(--out);border-top-right-radius:0}
.msg + .msg.in,.msg + .msg.out{margin-top:2px}
.msg.in + .msg.out,.msg.out + .msg.in,.buttons + .msg{margin-top:8px}
.msg .meta{float:right;margin:6px 0 -2px 10px;font-size:.68rem;color:var(--muted);display:inline-flex;align-items:center;gap:3px}
.msg .ticks{color:#53bdeb;font-size:.8rem;letter-spacing:-3px}
.msg em{font-style:italic;color:#3b4a54}
@keyframes pop{from{transform:translateY(4px);opacity:0}to{transform:none;opacity:1}}

.buttons{align-self:flex-start;width:84%;max-width:360px;display:flex;flex-direction:column;gap:3px;margin-top:3px}
.buttons button{background:#fff;border:0;border-radius:8px;padding:10px 12px;color:#027eb5;font-weight:500;font-size:.92rem;box-shadow:0 1px .5px rgba(0,0,0,.13);text-align:center}
.buttons button:hover:not(:disabled){background:#f5f6f6}
.buttons button:disabled{color:#9aa7ae;cursor:default}
.buttons button.chosen{color:#027eb5;background:#eef8fc}

.typing{align-self:flex-start;background:#fff;border-radius:8px;border-top-left-radius:0;padding:10px 12px;display:flex;gap:4px;box-shadow:0 1px .5px rgba(0,0,0,.13)}
.typing i{width:7px;height:7px;border-radius:50%;background:#9aa7ae;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:.3}30%{opacity:1}}

.composer{display:flex;gap:8px;padding:8px;padding-bottom:max(8px,env(safe-area-inset-bottom));background:#f0f2f5}
.composer input{flex:1;min-width:0;border:0;border-radius:22px;padding:12px 16px;font:inherit;font-size:1rem;background:#fff;outline:none}
.composer input:focus-visible{box-shadow:0 0 0 2px var(--wa-light)}
.composer button{width:46px;height:46px;border-radius:50%;border:0;background:var(--wa-teal);color:#fff;display:grid;place-items:center;flex:none}
.composer button svg{width:22px;height:22px}
.composer button:disabled{opacity:.6}

/* STK push (SIM toolkit style) */
.stk{position:fixed;inset:0;background:rgba(0,0,0,.55);display:grid;place-items:center;padding:20px;z-index:20;animation:fade .15s}
.stk[hidden]{display:none}
.stk-phone{width:100%;max-width:340px;background:#fafafa;border-radius:6px;box-shadow:0 20px 50px rgba(0,0,0,.4);overflow:hidden;font-family:Roboto,var(--font)}
.stk-bar{display:flex;justify-content:space-between;background:#2e7d32;color:#fff;padding:8px 14px;font-size:.82rem;font-weight:600;letter-spacing:.02em}
.stk form{padding:18px 18px 10px}
.stk p{margin:0 0 14px;font-size:1rem;line-height:1.4}
.stk label{display:block;font-size:.92rem;margin-bottom:6px}
.stk input{width:100%;border:0;border-bottom:2px solid #2e7d32;background:transparent;font-size:1.5rem;letter-spacing:.5em;padding:6px 2px;outline:none}
.stk-hint{display:block;color:#777;margin-top:6px}
.stk-err{color:#c62828;font-size:.85rem;min-height:1.2em;margin:6px 0 0}
.stk-actions{display:flex;justify-content:flex-end;gap:6px;margin-top:8px}
.stk-actions button{border:0;background:transparent;color:#2e7d32;font-weight:700;text-transform:uppercase;padding:10px 14px;border-radius:4px;letter-spacing:.04em}
.stk-actions button:hover{background:#e8f5e9}
@keyframes fade{from{opacity:0}to{opacity:1}}

/* M-PESA SMS toast */
.sms{position:fixed;left:50%;top:14px;transform:translateX(-50%);width:calc(100% - 24px);max-width:420px;background:rgba(255,255,255,.98);border-radius:16px;box-shadow:0 10px 30px rgba(0,0,0,.3);padding:10px 14px;z-index:30;animation:drop .3s ease-out;cursor:pointer}
.sms[hidden]{display:none}
.sms-head{display:flex;gap:8px;align-items:center;font-size:.8rem;color:#555}
.sms-head strong{color:#111;flex:1}
.sms p{margin:4px 0 0;font-size:.86rem;line-height:1.35}
@keyframes drop{from{transform:translate(-50%,-120%)}to{transform:translate(-50%,0)}}

.demo-index{background:#0a0f0c;color:#fff;display:grid;place-items:center;min-height:100vh;padding:24px}
.demo-index ul{list-style:none;padding:0;display:grid;gap:10px}
.demo-index a{display:block;padding:14px 18px;border-radius:12px;background:#13a456;color:#0a0f0c;font-weight:700;text-decoration:none}

/* Product cards in chat (catalog / multi-product / single-product messages) */
.msg.card{padding:3px 3px 0;width:min(84%,320px)}
.card .cover{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:6px;background:#e9edef}
.card .cover.sq{aspect-ratio:1}
.card .cb{padding:6px 6px 2px}
.card .cb b{display:block;margin-bottom:2px}
.card .cb .price{display:block;font-weight:600;margin-top:2px}
.card .thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:3px}
.card .thumbs img,.card .thumbs span{width:100%;aspect-ratio:1;object-fit:cover;border-radius:6px;background:#e9edef}
.card .thumbs span{display:grid;place-items:center;color:var(--muted);font-weight:600;font-size:.9rem}
.card-btn{display:flex;align-items:center;justify-content:center;gap:6px;width:calc(100% + 6px);margin:4px -3px 0;padding:10px;border:0;border-top:1px solid #e9edef;background:transparent;color:#027eb5;font-weight:500;font-size:.92rem;border-radius:0 0 8px 8px}
.card-btn:hover{background:#f5f6f6}
.card-btn svg{width:18px;height:18px}
.msg.order{display:flex;gap:10px;align-items:center;min-width:220px}
.msg.order img{width:54px;height:54px;border-radius:6px;object-fit:cover;flex:none}
.msg.order .t{flex:1}
.msg.order .t b{display:block}
.msg.order .t small{color:var(--muted)}

/* Catalog sheet */
.sheet{position:absolute;inset:0;z-index:15;display:flex;flex-direction:column;background:#fff;animation:slide .18s ease-out}
.sheet[hidden]{display:none}
@keyframes slide{from{transform:translateY(14px);opacity:0}to{transform:none;opacity:1}}
.sheet-head{display:flex;align-items:center;gap:8px;padding:10px 12px;padding-top:max(10px,env(safe-area-inset-top));background:var(--wa-teal);color:#fff}
.sheet-head strong{flex:1;min-width:0;font-size:1.05rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cart-btn{position:relative}
#cart-badge{position:absolute;top:0;right:-2px;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--wa-light);color:#06301c;font-size:.7rem;font-weight:700;display:grid;place-items:center}
#cart-badge[hidden]{display:none}
.sheet-body{flex:1;overflow-y:auto;overscroll-behavior:contain}
.sheet-foot{padding:10px 12px;padding-bottom:max(10px,env(safe-area-inset-bottom));border-top:1px solid #e9edef;background:#fff}
.sheet-foot[hidden]{display:none}
.cat-hero{display:flex;align-items:center;gap:12px;padding:16px;border-bottom:8px solid #f0f2f5}
.cat-hero .avatar{width:52px;height:52px;font-size:28px;flex:none}
.cat-hero b{display:block;font-size:1.05rem}
.cat-hero small{color:var(--muted)}
.cat-sec{padding:16px 16px 6px;margin:0;font-size:.95rem;font-weight:600}
.cat-row{display:flex;gap:12px;width:100%;padding:10px 16px;border:0;background:#fff;text-align:left;align-items:center;border-bottom:1px solid #f0f2f5;color:inherit}
.cat-row:hover{background:#f5f6f6}
.cat-row img{width:76px;height:76px;border-radius:8px;object-fit:cover;flex:none;background:#e9edef}
.cat-row .t{flex:1;min-width:0}
.cat-row .t b{display:block;font-weight:500;font-size:.98rem}
.cat-row .t span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--muted);font-size:.84rem;margin:2px 0 3px}
.cat-row .t em{font-style:normal;font-weight:600;font-size:.92rem}
.oos{color:#c62828;font-size:.78rem;font-weight:600;margin-left:6px}
.pd-img{width:100%;aspect-ratio:1;object-fit:cover;display:block;background:#e9edef}
.pd{padding:16px}
.pd h2{margin:0 0 4px;font-size:1.25rem;font-weight:600}
.pd .price{font-size:1.12rem;font-weight:600;margin:0 0 10px}
.pd p{margin:0 0 14px;color:#3b4a54;line-height:1.45}
.pd-label{font-size:.85rem;color:var(--muted);margin:0 0 6px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.chips button{border:1px solid #d1d7db;background:#fff;border-radius:18px;padding:7px 14px;font-size:.9rem;color:inherit}
.chips button.on{border-color:var(--wa-teal);background:#e7f8f1;color:var(--wa-teal);font-weight:600}
.stock{font-size:.86rem;margin:0 0 14px}
.qty-row{display:flex;align-items:center;gap:12px}
.stepper{display:inline-flex;align-items:center;border:1px solid #d1d7db;border-radius:20px;overflow:hidden;flex:none}
.stepper button{width:36px;height:36px;border:0;background:#fff;font-size:1.2rem;color:var(--wa-teal)}
.stepper button:disabled{color:#c4ccd1;cursor:default}
.stepper span{min-width:26px;text-align:center;font-weight:600}
.btn-green{flex:1;border:0;border-radius:22px;background:var(--wa-teal);color:#fff;font-weight:600;padding:11px 16px;font-size:.95rem}
.btn-green:disabled{background:#b6c6c2;cursor:default}
.btn-wide{width:100%;display:block}
.credit{font-size:.72rem;color:var(--muted);margin:18px 0 0}
.credit a{color:inherit}
.cart-line{display:flex;gap:12px;align-items:center;padding:12px 16px;border-bottom:1px solid #f0f2f5}
.cart-line img{width:56px;height:56px;border-radius:8px;object-fit:cover;flex:none}
.cart-line .t{flex:1;min-width:0;font-size:.92rem}
.cart-line .t b{display:block;font-weight:500}
.cart-sum{display:flex;justify-content:space-between;padding:14px 16px 6px;font-weight:600}
.cart-note{padding:0 16px 16px;color:var(--muted);font-size:.84rem;margin:0}
.empty{padding:48px 16px;text-align:center;color:var(--muted)}
.empty .btn-green{display:inline-block;flex:none;margin-top:12px}

.pd-img{max-height:min(390px,48vh);object-fit:cover}
@media (prefers-reduced-motion:reduce){*{animation:none!important}}

/* e-receipt */
.msg.receipt{width:min(86%,330px)}
.receipt .rc{padding:8px 8px 2px}
.rc-head{display:flex;flex-direction:column;gap:1px;padding-bottom:6px;border-bottom:1px dashed #cfd6da}
.rc-head span{font-size:.7rem;letter-spacing:.08em;color:var(--muted);font-weight:600}
.rc-paid{margin:8px 0 4px;padding:6px 8px;border-radius:6px;background:#e7f8ee;color:#0b6b35;font-size:.82rem;font-weight:600}
.rc table{width:100%;border-collapse:collapse;font-size:.86rem}
.rc td{padding:4px 0;vertical-align:top}
.rc td:last-child{text-align:right;white-space:nowrap;padding-left:10px}
.rc tr.tot td{border-top:1px solid #e3e7ea;padding-top:6px;font-weight:700}
.rc-meta{font-size:.78rem;color:var(--muted);margin-top:4px}
.rc-text{margin:8px 0 0;font-size:.9rem}
a.card-btn{text-decoration:none}