:root{--ink:#0B1220;--muted:#5B6474;--line:#E4E7EC;--line2:#D0D5DD;--bg:#F5F6F8;--surface:#fff;--green:#0A7D5A;--green-d:#065F44;--green-l:#EEF7F3;--bot:#EEF2FF;--bot-line:#C7D2FE;--bot-ink:#3730A3;--red:#B42318;--amber:#B54708}
*{box-sizing:border-box}
[v-cloak]{display:none}
html,body{margin:0;height:100%}
body{font-family:'Plus Jakarta Sans',system-ui,sans-serif;color:var(--ink);background:var(--bg);font-size:14px;line-height:1.45;-webkit-font-smoothing:antialiased}
a{color:var(--green)}
button{font-family:inherit;font-size:inherit;color:inherit}
h1{margin:0;font-size:20px;font-weight:800;letter-spacing:-.01em}
.muted{color:var(--muted)}.xs{font-size:12px}.sm{font-size:13px}.ok{color:var(--green);font-weight:600}.err{color:var(--red)}
.pad{padding:16px 20px}.grow{flex:1;min-width:0}
.row-between{display:flex;align-items:center;justify-content:space-between;gap:8px}
.row-start{display:flex;align-items:center;gap:6px;min-width:0}
.gap8{gap:8px}.gap12{gap:12px}
.ellipsis{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.ellipsis2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sr{position:absolute;left:-9999px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:40px;padding:0 16px;border-radius:10px;border:1px solid transparent;font-weight:700;text-decoration:none;cursor:pointer;background:#fff}
.btn:disabled{opacity:.55;cursor:default}
.btn-sm{min-height:34px;padding:0 12px;font-size:13px}
.btn-block{width:100%}
.btn-primary{background:var(--green);color:#fff}.btn-primary:hover{background:var(--green-d)}
.btn-dark{background:var(--ink);color:#fff}
.btn-ghost{border-color:var(--line2);color:var(--ink)}
.btn-outline-green{border-color:var(--green);color:var(--green)}
.icon-btn{width:40px;height:40px;flex:none;display:grid;place-items:center;border:0;background:transparent;border-radius:10px;cursor:pointer;color:var(--muted)}
.icon-btn:hover{background:var(--bg)}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.spinner{width:22px;height:22px;border:3px solid var(--line);border-top-color:var(--green);border-radius:50%;display:inline-block;animation:spin .8s linear infinite}
.spinner.sm{width:16px;height:16px;border-width:2px}
@keyframes spin{to{transform:rotate(360deg)}}
.center-full{height:100vh;display:grid;place-items:center}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--ink);text-decoration:none}
.logo b{width:34px;height:34px;border-radius:10px;background:var(--green);color:#fff;display:grid;place-items:center}
/* login */
.login{min-height:100vh;display:grid;place-items:center;padding:20px}
.login-card{width:100%;max-width:400px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;display:flex;flex-direction:column;gap:14px}
.login-card h1{font-size:24px;margin-top:6px}.login-card p{margin:0;color:var(--muted)}
/* shell */
.shell{display:flex;height:100vh;height:100dvh;overflow:hidden}
.rail{flex:0 0 76px;background:var(--ink);display:flex;flex-direction:column;align-items:center;gap:6px;padding:14px 0}
.rail-logo{width:38px;height:38px;border-radius:11px;background:var(--green);color:#fff;display:grid;place-items:center;font-weight:800;font-size:19px;text-decoration:none;margin-bottom:12px}
.rail-btn{width:64px;min-height:56px;border-radius:12px;border:0;background:transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:#94A3B8;text-decoration:none;font-size:11px;font-weight:600;cursor:pointer}
.rail-btn svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.rail-btn.on{background:#1E293B;color:#fff}
.rail-btn:hover{color:#fff}
.rail-out{margin-top:auto}
/* list */
.list{flex:0 0 340px;background:#fff;border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0}
.list-head{padding:18px 18px 10px;display:flex;flex-direction:column;gap:12px;border-bottom:1px solid var(--line)}
.search{display:flex;align-items:center;gap:8px;border:1px solid var(--line2);border-radius:10px;padding:0 12px;height:40px;background:#fff}
.search svg{width:16px;height:16px;fill:none;stroke:var(--muted);stroke-width:2}
.search input{border:0;outline:0;flex:1;font:inherit;background:transparent;min-width:0}
.filters{display:flex;gap:6px;flex-wrap:wrap}
.pill{height:32px;padding:0 12px;border-radius:999px;border:1px solid var(--line2);background:#fff;font-size:13px;cursor:pointer}
.pill.on{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:600}
.conv-list{overflow:auto;flex:1}
.conv{display:flex;gap:12px;padding:13px 18px;border-bottom:1px solid #F2F4F7;text-decoration:none;color:inherit}
.conv:hover{background:#FAFAFB}
.conv.on{background:var(--green-l);box-shadow:inset 3px 0 0 var(--green)}
.conv.unread b{font-weight:800}
.conv-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}
.ava{flex:0 0 40px;width:40px;height:40px;border-radius:999px;display:grid;place-items:center;color:#fff;font-weight:700;overflow:hidden}
.ava img{width:100%;height:100%;object-fit:cover}
.ava.lg{flex-basis:48px;width:48px;height:48px;font-size:18px}
.chip{font-size:11px;font-weight:700;padding:1px 6px;border-radius:4px;flex:none}
.chip-shp{background:#FDE3DB;color:#C63D22}
.status{font-weight:600}.st-bot{color:var(--bot-ink)}.st-human{color:var(--amber)}
.empty{margin:24px 18px;padding:20px;border:1px dashed var(--line2);border-radius:14px;display:flex;flex-direction:column;gap:8px;align-items:flex-start}
/* thread */
.thread{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--bg)}
.thread-empty{margin:auto;display:flex;flex-direction:column;align-items:center;gap:6px;color:var(--ink)}
.thread-empty svg{width:40px;height:40px;fill:none;stroke:var(--muted);stroke-width:1.6}
.thread-head{display:flex;align-items:center;gap:10px;padding:12px 20px;background:#fff;border-bottom:1px solid var(--line)}
.back{display:none;width:36px;height:36px;place-items:center;color:var(--ink)}
.back svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2}
.msgs{flex:1;overflow:auto;padding:18px 20px;display:flex;flex-direction:column;gap:6px}
.bubble-row{display:flex}.bubble-row.out{justify-content:flex-end}
.bubble{max-width:min(70%,560px);padding:9px 13px 6px;border-radius:14px;background:#fff;border:1px solid var(--line);white-space:pre-wrap;overflow-wrap:anywhere}
.in .bubble{border-radius:14px 14px 14px 4px}
.out .bubble{border-radius:14px 14px 4px 14px}
.bubble.admin{background:#E7F5EE;border-color:#BFE3D1}
.bubble.bot{background:var(--bot);border-color:var(--bot-line)}
.bubble.failed{border-color:var(--red)}.bubble.pending{opacity:.6}
.who-tag{display:block;font-size:11px;font-weight:700;color:var(--bot-ink);margin-bottom:2px}
.meta{display:block;text-align:right;font-size:11px;color:var(--muted);margin-top:3px}
.prod{display:flex;gap:10px;align-items:center;width:250px;max-width:100%;white-space:normal}
.prod img{width:52px;height:52px;border-radius:8px;object-fit:cover;flex:none}
.prod b{display:block;font-size:13px;line-height:1.3}
.price{display:block;font-weight:700;color:#EE4D2D;font-size:13px}
.img{max-width:220px;max-height:280px;border-radius:10px;display:block}
.order-chip{font-weight:600}
.composer{display:flex;align-items:flex-end;gap:8px;margin:0 20px 18px;padding:8px;background:#fff;border:1px solid var(--line2);border-radius:14px}
.composer textarea{width:100%;border:0;outline:0;resize:none;font:inherit;padding:9px 6px;max-height:140px;min-height:40px}
/* buyer */
.buyer{flex:0 0 300px;background:#fff;border-left:1px solid var(--line);padding:18px;display:flex;flex-direction:column;gap:12px;overflow:auto}
.cap{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;text-align:center}
.stats div{background:var(--bg);border-radius:12px;padding:10px 4px;display:flex;flex-direction:column}
.stats span{font-size:11px;color:var(--muted)}
.order{border:1px solid var(--line);border-radius:12px;padding:10px 12px;display:grid;gap:6px}
.line{display:flex;align-items:center;gap:8px}
.line img{width:32px;height:32px;border-radius:7px;object-fit:cover;flex:none}
.badge{font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;background:#F2F4F7;color:#344054;white-space:nowrap}
.b-green{background:#DCFCE7;color:#166534}.b-blue{background:#DBEAFE;color:#1E40AF}.b-amber{background:#FEF3C7;color:#92400E}.b-red{background:#FEE4E2;color:#B42318}
/* pages */
.page{flex:1;overflow:auto;padding:28px 32px}
.page p{max-width:640px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px;max-width:1040px}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;display:flex;flex-direction:column;gap:12px}
.card.off{opacity:.65}
.card p{margin:0}
.brand{width:42px;height:42px;flex:none;border-radius:12px;display:grid;place-items:center}
.brand svg{width:24px;height:24px;fill:#fff}
/* sheet */
.sheet-bg{position:fixed;inset:0;background:rgba(11,18,32,.45);display:grid;place-items:center;z-index:50;padding:16px}
.sheet{width:100%;max-width:520px;max-height:80vh;background:#fff;border-radius:18px;padding:18px;display:flex;flex-direction:column;gap:12px}
.sheet-list{overflow:auto;display:flex;flex-direction:column;gap:8px}
.prod-row{display:flex;align-items:center;gap:12px;padding:8px;border:1px solid var(--line);border-radius:12px;background:#fff;text-align:left;cursor:pointer}
.prod-row img{width:48px;height:48px;border-radius:9px;object-fit:cover;flex:none}
.prod-row .grow{display:flex;flex-direction:column;gap:2px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:12px 18px;border-radius:12px;font-weight:600;z-index:60;max-width:90vw}
.toast.err{background:var(--red)}
.only-narrow{display:none}
/* responsif */
@media (max-width:1180px){
  .buyer{position:fixed;right:0;top:0;bottom:0;width:320px;z-index:40;box-shadow:-12px 0 30px rgba(11,18,32,.15);transform:translateX(100%);transition:transform .2s}
  .buyer.open{transform:none}
  .only-narrow{display:inline-flex}
}
@media (max-width:820px){
  .shell{flex-direction:column-reverse}
  .rail{flex:0 0 auto;flex-direction:row;justify-content:space-around;padding:6px 8px calc(6px + env(safe-area-inset-bottom))}
  .rail-logo{display:none}.rail-out{margin-top:0}
  .rail-btn{min-height:50px}
  .list{flex:1;border-right:0}
  .thread{display:none}
  .has-thread .list{display:none}
  .has-thread .thread{display:flex}
  .back{display:grid}
  .page{padding:20px 16px}
  .bubble{max-width:85%}
  .composer{margin:0 10px 10px}
  .buyer{width:100%}
}