/* Tech Hub Electronics: sample "existing" shop website for the integration demo */
:root{--blue:#1d4ed8;--blue-d:#1e3a8a;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--bg:#f8fafc;--r:10px;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:124px}
body{margin:0;font:16px/1.5 var(--font);color:var(--ink);background:#fff;-webkit-text-size-adjust:100%}
button,input,select{font:inherit}
button{cursor:pointer}
a{color:var(--blue)}
h1,h2,h3{line-height:1.2;margin:0 0 .5em}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.th-wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.th-muted{color:var(--muted)}
.th-small{font-size:.88rem}
[hidden]{display:none!important}

/* Naibyte demo bar */
.nb-bar{position:sticky;top:0;z-index:21;height:52px;background:linear-gradient(180deg,#0b0b0c,#1d1e21);color:#d6d8db;font-size:.9rem;border-bottom:1px solid #2b2d31}
.nb-in{max-width:1120px;height:100%;margin:0 auto;padding:0 12px;display:flex;align-items:center;gap:12px}
.nb-exit{display:flex;align-items:center;gap:6px;background:#fff;color:#0b0b0c;text-decoration:none;font-weight:700;font-size:.95rem;border-radius:8px;padding:8px 14px 8px 10px;flex:none}
.nb-exit:hover{background:#e6e7e9}
.nb-exit svg{width:20px;height:20px}
.nb-label{display:flex;align-items:center;gap:7px;color:#fff;font-weight:600;margin:0 auto;white-space:nowrap}
.nb-label svg{width:22px;height:22px}
@media (max-width:400px){.nb-label{font-size:0;gap:0}}
.nb-intro{margin:0;padding:10px 20px;background:#1d1e21;color:#d6d8db;font-size:.9rem;text-align:center}
.nb-intro b{color:#fff}
.nb-btn{flex:none;background:transparent;border:1px solid #4a4d53;color:#fff;border-radius:8px;padding:6px 12px;font-size:.88rem}
.nb-btn:hover{border-color:#8e9297}
.nb-hint{max-width:1120px;margin:0 auto;padding:0 20px 10px;font-size:.84rem;color:#4ade80}

/* Site header */
.th-head{position:sticky;top:52px;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
.th-nav{display:flex;align-items:center;gap:20px;height:64px}
.th-logo{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:700;font-size:1.1rem;line-height:1.05}
.th-logo small{display:block;font-weight:500;font-size:.72rem;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}
.th-logo-mark{width:36px;height:36px;border-radius:8px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:.9rem;letter-spacing:.02em}
.th-links{display:flex;gap:18px;margin-left:auto}
.th-links a{color:var(--ink);text-decoration:none;font-weight:500;font-size:.95rem}
.th-links a:hover{color:var(--blue)}
.th-cart-btn{display:flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 12px;color:var(--ink);font-weight:500}
.th-cart-btn svg{width:20px;height:20px}
.th-cart-btn b{background:var(--blue);color:#fff;border-radius:10px;font-size:.75rem;min-width:20px;height:20px;display:grid;place-items:center;padding:0 6px}
@media (max-width:640px){.th-links{display:none}.th-cart-btn{margin-left:auto}}

.th-hero{background:linear-gradient(120deg,#1e3a8a,#1d4ed8);color:#fff;padding:56px 0 60px}
.th-hero h1{font-size:clamp(1.8rem,4.5vw,2.8rem);max-width:640px}
.th-hero p{max-width:560px;color:#dbeafe;font-size:1.08rem;margin:0 0 24px}
.th-hero-ctas{display:flex;flex-wrap:wrap;gap:10px}
.th-btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border-radius:8px;border:0;background:#fff;color:var(--blue-d);font-weight:600;text-decoration:none}
.th-btn-line{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5)}
.th-sec .th-btn,.th-drawer .th-btn{background:var(--blue);color:#fff}
.th-btn:disabled{opacity:.55;cursor:default}

.th-perks{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding-top:24px;padding-bottom:8px}
.th-perks div{border-left:3px solid var(--blue);padding:2px 0 2px 12px}
.th-perks b{display:block}.th-perks span{color:var(--muted);font-size:.9rem}
@media (max-width:640px){.th-perks{grid-template-columns:1fr}}

.th-sec{padding:44px 20px}
.th-sec-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.th-sec-head h2{margin:0}
.th-filters{display:flex;flex-wrap:wrap;gap:6px}
.th-filters button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:6px 12px;font-size:.9rem;color:var(--ink)}
.th-filters button[aria-selected="true"]{background:var(--ink);border-color:var(--ink);color:#fff}
.th-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media (min-width:760px){.th-grid{grid-template-columns:repeat(3,1fr)}}
@media (min-width:1000px){.th-grid{grid-template-columns:repeat(4,1fr)}}
.th-card{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;background:#fff}
.th-card img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#f1f5f9;display:block}
.th-card-b{padding:12px;display:flex;flex-direction:column;gap:4px;flex:1}
.th-card h3{font-size:.98rem;margin:0}
.th-card p{margin:0;color:var(--muted);font-size:.82rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.th-price{font-weight:700;margin-top:auto;padding-top:6px}
.th-stock{font-size:.8rem;color:#15803d}.th-stock.low{color:#b45309}.th-stock.out{color:#b91c1c}
.th-add{margin-top:8px;border:0;border-radius:8px;background:var(--blue);color:#fff;font-weight:600;padding:9px;font-size:.9rem}
.th-add:disabled{background:#cbd5e1;cursor:default}

.th-track-sec{background:var(--bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-left:0;padding-right:0}
.th-track{display:grid;gap:28px}
@media (min-width:860px){.th-track{grid-template-columns:1fr 1fr;align-items:start}}
.th-track-form{display:flex;gap:8px;margin:16px 0 10px}
.th-track-form input{flex:1;min-width:0;border:1px solid #cbd5e1;border-radius:8px;padding:10px 12px;text-transform:uppercase;background:#fff}
.th-linkbtn{border:0;background:none;color:var(--blue);padding:0;text-decoration:underline;font-size:inherit}
.th-recent{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:.88rem;color:var(--muted);margin-bottom:6px}
.th-recent div{display:flex;flex-wrap:wrap;gap:6px}
.th-chip{border:1px solid var(--line);background:#fff;border-radius:8px;padding:4px 10px;font-size:.84rem;color:var(--ink)}
.th-chip small{color:var(--muted)}
.th-track-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;min-height:160px}
.th-track-card h3{margin:0 0 2px}
.th-meta{color:var(--muted);font-size:.88rem;margin:0 0 14px}
.th-steps{list-style:none;margin:0 0 14px;padding:0}
.th-steps li{position:relative;padding:0 0 16px 30px;color:var(--muted)}
.th-steps li::before{content:"";position:absolute;left:0;top:3px;width:16px;height:16px;border-radius:50%;border:2px solid #cbd5e1;background:#fff}
.th-steps li::after{content:"";position:absolute;left:7px;top:21px;bottom:0;width:2px;background:#e2e8f0}
.th-steps li:last-child::after{display:none}
.th-steps li.done{color:var(--ink);font-weight:500}
.th-steps li.done::before{background:#16a34a;border-color:#16a34a}
.th-steps li.done::after{background:#16a34a}
.th-steps li small{display:block;font-weight:400;color:var(--muted);font-size:.8rem}
.th-status{background:var(--bg);border-radius:8px;padding:10px 12px;font-size:.92rem;margin:0}
.th-err{color:#b91c1c}

.th-visit{display:grid;gap:20px}
@media (min-width:760px){.th-visit{grid-template-columns:1fr 1fr}}
.th-visit h2{font-size:1.2rem}.th-visit p{margin:0;color:var(--muted)}
.th-foot{border-top:1px solid var(--line);padding:24px 0 96px;font-size:.85rem;color:var(--muted)}

/* Drawers */
.th-scrim{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:40}
.th-drawer{position:fixed;top:0;right:0;bottom:0;width:min(420px,100%);background:#fff;z-index:41;display:flex;flex-direction:column;box-shadow:-8px 0 30px rgba(0,0,0,.15);animation:slide .2s ease-out}
.th-drawer-wide{width:min(520px,100%)}
@keyframes slide{from{transform:translateX(24px);opacity:0}to{transform:none;opacity:1}}
.th-drawer-head{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line)}
.th-drawer-head.nb-dark{background:linear-gradient(180deg,#0b0b0c,#1d1e21);color:#fff;border-bottom:0}
.th-x{border:0;background:none;font-size:1.6rem;line-height:1;color:inherit;width:36px;height:36px;border-radius:8px}
.th-x:hover{background:rgba(127,127,127,.15)}
.th-drawer-body{flex:1;overflow-y:auto;padding:18px}
.th-drawer-foot{border-top:1px solid var(--line);padding:14px 18px;padding-bottom:max(14px,env(safe-area-inset-bottom))}
.th-drawer-foot .th-btn{width:100%}
.th-line{display:flex;gap:12px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}
.th-line img{width:56px;height:56px;border-radius:8px;object-fit:cover;flex:none}
.th-line div{flex:1;min-width:0;font-size:.9rem}.th-line b{display:block;font-size:.92rem}
.th-qty{display:flex;align-items:center;border:1px solid var(--line);border-radius:8px}
.th-qty button{border:0;background:none;width:30px;height:30px;font-size:1rem}
.th-qty button:disabled{opacity:.35;cursor:default}
.th-qty span{min-width:22px;text-align:center;font-weight:600;font-size:.9rem}
.th-sum{display:flex;justify-content:space-between;padding:6px 0;font-size:.95rem}
.th-sum.total{font-weight:700;font-size:1.05rem;border-top:1px solid var(--line);margin-top:6px;padding-top:12px}
.th-field{display:block;margin-bottom:14px}
.th-field span{display:block;font-size:.88rem;font-weight:600;margin-bottom:4px}
.th-field input,.th-field select{width:100%;border:1px solid #cbd5e1;border-radius:8px;padding:10px 12px;background:#fff}
.th-pay-note{display:flex;gap:10px;align-items:center;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:8px;padding:10px 12px;font-size:.88rem;margin:6px 0 14px}
.th-pay-note b{color:#15803d}
.th-done{text-align:center;padding:18px 0}
.th-done .tick{width:56px;height:56px;border-radius:50%;background:#16a34a;color:#fff;display:grid;place-items:center;font-size:1.8rem;margin:0 auto 12px}
.th-done p{color:var(--muted);margin:4px 0}
.th-done .ref{font-size:1.4rem;font-weight:700;color:var(--ink);margin:10px 0}
.th-back{border:0;background:none;color:var(--blue);padding:0;margin-bottom:12px;font-size:.92rem}
.th-empty{text-align:center;color:var(--muted);padding:30px 0}

/* Naibyte code panel */
.nb-panel h3{font-size:1.02rem;margin:22px 0 6px}
.nb-panel h3:first-child{margin-top:0}
.nb-panel p{margin:0 0 10px;font-size:.93rem;color:#334155}
.nb-code{position:relative;background:#0b0b0c;border-radius:10px;padding:14px 14px 14px;margin:8px 0}
.nb-code pre{margin:0;overflow-x:auto;color:#d6d8db;font:13px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;padding-right:56px}
.nb-code .c{color:#7d8590}.nb-code .t{color:#4ade80}.nb-code .a{color:#93c5fd}.nb-code .v{color:#fbbf24}
.nb-code button{position:absolute;top:10px;right:10px;border:1px solid #3a3c41;background:#1d1e21;color:#fff;border-radius:6px;padding:4px 10px;font-size:.8rem}
.nb-status{font-size:.86rem!important;font-weight:600}
.nb-status.on{color:#15803d!important}.nb-status.off{color:#64748b!important}
.nb-orders{width:100%;border-collapse:collapse;font-size:.86rem}
.nb-orders th,.nb-orders td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line);vertical-align:top}
.nb-orders th{font-size:.78rem;color:var(--muted);font-weight:600}
.nb-tag{display:inline-block;font-size:.74rem;font-weight:600;border-radius:5px;padding:1px 7px}
.nb-tag.web{background:#dbeafe;color:#1e40af}.nb-tag.chat{background:#dcfce7;color:#166534}
.nb-try{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-top:20px;font-size:.9rem}
.nb-try ol{margin:6px 0 0;padding-left:20px}

/* M-Pesa prompt + SMS (same look as the chat demos) */
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);z-index:70;background:#0b0b0c;color:#fff;border-radius:10px;padding:10px 16px;font-size:.9rem;box-shadow:0 8px 24px rgba(0,0,0,.25);max-width:calc(100% - 120px)}

/* keep the chat launcher off the drawer's pay button on small screens */
@media (max-width:640px){body.th-drawer-open #naibyte-widget{display:none}}

/* WhatsApp checkout */
.th-btn-wa,.th-drawer .th-btn-wa{background:#25d366;color:#0b2b17;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-size:1.05rem}
.th-btn-wa:hover,.th-drawer .th-btn-wa:hover{background:#1fbe5b}
.th-btn-wa svg{width:22px;height:22px}
.th-how{margin:18px 0 0;padding:14px 16px 14px 34px;background:#f0fbf4;border:1px solid #cdeedb;border-radius:12px;font-size:.92rem;color:#1d3b2a}
.th-how li+li{margin-top:6px}
.wa-float{position:fixed;right:18px;bottom:18px;z-index:40;display:flex;align-items:center;gap:10px;padding:12px 18px 12px 14px;border-radius:999px;background:#25d366;color:#0b2b17;font-weight:600;text-decoration:none;box-shadow:0 8px 24px rgba(0,0,0,.18)}
.wa-float:hover{background:#1fbe5b}
.wa-float svg{width:26px;height:26px}
body.th-drawer-open .wa-float{display:none}
@media (max-width:640px){.wa-float span{display:none}.wa-float{padding:14px}}
.wa-open{position:fixed;inset:0;z-index:90;display:grid;place-items:center;background:rgba(7,94,84,.96);color:#fff;text-align:center}
.wa-open div{display:flex;flex-direction:column;align-items:center;gap:8px}
.wa-open svg{width:64px;height:64px;margin-bottom:8px;animation:wa-pulse 1s ease-in-out infinite alternate}
.wa-open b{font-size:1.25rem}
@keyframes wa-pulse{from{transform:scale(.92)}to{transform:scale(1.04)}}