:root{
  --bg:#0f1216;--panel:#171c23;--line:#252c36;--ink:#e8edf3;--mut:#8b97a7;
  --acc:#7c5cff;--acc2:#5b8def;--green:#2fbf71;--red:#e5544b;--radius:12px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 system-ui,Segoe UI,Roboto,sans-serif;-webkit-tap-highlight-color:transparent}
header{padding:12px 16px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;flex-wrap:wrap;position:sticky;top:0;background:var(--bg);z-index:20}
header h1{font-size:18px;margin:0;white-space:nowrap}
header h1 span{color:var(--mut);font-size:12px;font-weight:400}
nav{display:flex;gap:6px;margin-left:auto;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
nav::-webkit-scrollbar{display:none}
.tab{background:none;border:1px solid var(--line);color:var(--mut);padding:9px 14px;border-radius:8px;cursor:pointer;font-size:13px;white-space:nowrap;flex:0 0 auto;min-height:40px}
.tab.active{background:var(--acc);border-color:var(--acc);color:#fff}
main{max-width:1080px;margin:0 auto;padding:18px}
.tab-panel{display:none}.tab-panel.active{display:block}
.grid{display:grid;grid-template-columns:1fr 1.2fr;gap:18px}
@media(max-width:820px){.grid{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin-bottom:16px}
.card h2{font-size:15px;margin:0 0 12px}.card h3{font-size:13px;color:var(--mut);margin:14px 0 8px}
label{display:block;margin:11px 0;font-size:12.5px;color:var(--mut)}
/* 16px font on controls prevents iOS auto-zoom on focus */
input,textarea,select{width:100%;background:#0e131a;border:1px solid var(--line);color:var(--ink);border-radius:9px;padding:12px 12px;font-size:16px;font-family:inherit;margin-top:5px}
input:focus,textarea:focus{outline:none;border-color:var(--acc2)}
.row{display:flex;gap:10px}.row label{flex:1;min-width:0}
.actions{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
button{cursor:pointer;font:inherit}
button.primary{background:var(--acc);border:0;color:#fff;padding:12px 18px;border-radius:9px;font-size:15px;min-height:44px}
#reset-btn{background:none;border:1px solid var(--line);color:var(--mut);padding:12px 16px;border-radius:9px;min-height:44px}
.muted{color:var(--mut);font-weight:400}.small{font-size:12px}
hr{border:0;border-top:1px solid var(--line);margin:14px 0}
/* products list */
.prod{display:flex;gap:12px;align-items:center;padding:10px;border:1px solid var(--line);border-radius:10px;margin-bottom:9px}
.prod img{width:56px;height:56px;object-fit:cover;border-radius:8px;background:#0e131a;flex:none}
.prod .info{flex:1;min-width:0}
.prod .nm{font-weight:600}
.prod .meta{font-size:12px;color:var(--mut)}
.prod .price{color:var(--green);font-weight:700}
.prod .st{font-size:11px;color:var(--mut)}
.prod .ops{display:flex;gap:6px}
.prod .ops button{background:none;border:1px solid var(--line);color:var(--mut);border-radius:7px;padding:5px 9px;font-size:12px}
.prod .ops .del:hover{color:var(--red);border-color:var(--red)}
.img-box{margin-top:14px;border-top:1px solid var(--line);padding-top:12px}
#img-preview img{max-width:100%;border-radius:8px;margin-top:8px;border:1px solid var(--line)}
/* chat */
.chat-card{max-width:620px;margin:0 auto}
.chat-log{height:52vh;overflow-y:auto;border:1px solid var(--line);border-radius:10px;padding:12px;margin:10px 0;background:#0e131a}
.msg{max-width:78%;padding:8px 12px;border-radius:12px;margin:6px 0;white-space:pre-wrap;word-wrap:break-word}
.msg.user{background:var(--acc2);color:#fff;margin-left:auto;border-bottom-right-radius:3px}
.msg.bot{background:#1d2530;border:1px solid var(--line);border-bottom-left-radius:3px}
.msg.sys{background:none;color:var(--mut);font-size:12px;text-align:center;max-width:100%}
#chat-form{display:flex;gap:8px}#chat-input{margin-top:0}
.thumbs{display:flex;gap:6px;margin-top:6px;flex-wrap:wrap}.thumbs img{width:70px;height:70px;object-fit:cover;border-radius:8px}
/* header tag + logout */
.tag{color:var(--mut);font-size:11px;border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-weight:400}
#logout{color:var(--red);border-color:transparent}
/* login */
.login-body{display:flex;align-items:center;justify-content:center;min-height:100vh}
.login-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:30px;width:320px;text-align:center}
.login-card h1{margin:0 0 4px}.login-card input{margin:16px 0 10px;text-align:center}
.login-err{color:var(--red);font-size:13px;min-height:18px;margin-top:8px}
/* gallery */
.gallery{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.gitem{position:relative}
.gitem img{width:84px;height:84px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.gitem button{position:absolute;top:-6px;right:-6px;width:20px;height:20px;border-radius:50%;background:var(--red);color:#fff;border:0;font-size:11px;line-height:1;cursor:pointer}
.meta.lock{color:#c8a24a}
/* orders */
.order{border:1px solid var(--line);border-radius:10px;padding:11px 13px;margin-bottom:9px}
.ohead{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.ohead select{width:auto;margin:0;padding:8px 10px;font-size:13px;min-height:38px}
.oitems{font-size:12.5px;color:var(--ink);margin-top:6px}

/* ---------- mobile ---------- */
@media(max-width:720px){
  header{padding:10px 12px;gap:8px}
  header h1{font-size:16px;width:100%}
  nav{margin-left:0;width:100%;padding-bottom:2px}
  main{padding:12px}
  .card{padding:14px;border-radius:12px}
  .grid{grid-template-columns:1fr;gap:14px}
  /* bigger tap targets in lists */
  .prod{padding:12px}
  .prod img{width:62px;height:62px}
  .prod .ops{flex-direction:column;gap:8px}
  .prod .ops button{padding:9px 12px;font-size:15px;min-width:44px;min-height:40px}
  .gitem img{width:96px;height:96px}
  .gitem button{width:26px;height:26px;font-size:13px;top:-8px;right:-8px}
  .chat-card{max-width:100%}
  .chat-log{height:60vh}
  #chat-input{font-size:16px}
  .msg{max-width:88%}
  .ohead select{flex:1;min-width:120px}
  .login-card{width:100%;max-width:360px;margin:0 14px}
}