:root {
  --navy:#0d2340; --teal:#00b3a4; --teal-dark:#007f76; --ink:#1a2430;
  --muted:#5d6b78; --bg:#f3f8f8; --panel:#fff; --line:#dce7e9;
  --danger:#aa2d28; --warn:#9a5b00; --shadow:0 16px 48px rgba(13,35,64,.09);
}
* { box-sizing:border-box; }
body { margin:0; min-height:100vh; background:var(--bg); color:var(--ink); font:15px/1.5 system-ui,-apple-system,Segoe UI,sans-serif; }
button,input,select,textarea { font:inherit; }
button { cursor:pointer; }
.topbar { min-height:64px; padding:0 24px; display:flex; align-items:center; gap:16px; background:var(--navy); color:#fff; }
.brand { font-size:23px; font-weight:850; letter-spacing:-.7px; }
.brand span { color:var(--teal); }
.product { color:#c7d7e5; padding-left:16px; border-left:1px solid #42566f; }
.topbar #logout { margin-left:auto; color:#fff; background:transparent; border-color:#62758c; }
main { max-width:1180px; margin:0 auto; padding:36px 20px 70px; }
.hidden { display:none !important; }
.login-card { max-width:460px; margin:7vh auto; padding:34px; border:1px solid var(--line); border-radius:18px; background:#fff; box-shadow:var(--shadow); }
h1,h2,h3,p { margin-top:0; }
h1 { color:var(--navy); letter-spacing:-.5px; }
.eyebrow { margin-bottom:5px; color:var(--teal-dark); font-size:12px; font-weight:800; letter-spacing:1.2px; text-transform:uppercase; }
.lede,.panel-head p { color:var(--muted); }
label { display:block; margin:17px 0; color:var(--navy); font-size:13px; font-weight:750; }
input,select,textarea { width:100%; margin-top:6px; padding:11px 12px; border:1px solid #bdccd1; border-radius:9px; background:#fff; color:var(--ink); }
input:focus,select:focus,textarea:focus { outline:3px solid rgba(0,179,164,.18); border-color:var(--teal); }
button { border:1px solid transparent; border-radius:9px; padding:10px 15px; font-weight:750; }
.primary { width:100%; background:var(--teal); color:#fff; }
.primary:hover { background:var(--teal-dark); }
.quiet { border-color:var(--line); background:#fff; color:var(--navy); }
.danger { border-color:#efc6c3; background:#fff7f6; color:var(--danger); }
.security-note { margin:20px 0 0; color:var(--muted); font-size:12px; text-align:center; }
.error { min-height:22px; margin:12px 0 0; color:var(--danger); font-weight:700; }
.welcome,.panel-head { display:flex; align-items:center; justify-content:space-between; gap:20px; }
.account { color:var(--muted); font-size:13px; text-align:right; }
.tabs { display:flex; gap:6px; margin:20px 0; border-bottom:1px solid var(--line); }
.tabs button { border:0; border-bottom:3px solid transparent; border-radius:8px 8px 0 0; background:transparent; color:var(--muted); }
.tabs button.active { border-bottom-color:var(--teal); color:var(--navy); }
.panel { padding:24px; border:1px solid var(--line); border-radius:15px; background:var(--panel); box-shadow:var(--shadow); }
.panel-head { margin-bottom:18px; }
.panel-head h2 { margin-bottom:2px; color:var(--navy); }
.panel-head p { margin-bottom:0; }
.cards { display:grid; gap:14px; }
.order-card { padding:19px; border:1px solid var(--line); border-radius:12px; }
.order-top { display:flex; justify-content:space-between; gap:14px; }
.order-top h3 { margin-bottom:2px; color:var(--navy); }
.pill { display:inline-flex; align-items:center; padding:3px 9px; border-radius:999px; background:#e7f7f5; color:#08766e; font-size:12px; font-weight:750; }
.pill.warn { background:#fff2da; color:var(--warn); }
.meta { color:var(--muted); font-size:13px; }
.address { margin:12px 0 4px; }
.notes { margin:10px 0; padding:9px 11px; border-left:3px solid #e8b45b; background:#fff9ec; font-size:13px; }
.packing-grid { display:grid; grid-template-columns:1fr 1fr; gap:10px; margin-top:14px; }
.actions { display:flex; flex-wrap:wrap; gap:8px; margin-top:12px; }
.actions button { background:var(--navy); color:#fff; }
.actions .secondary { border-color:var(--line); background:#fff; color:var(--navy); }
.status { min-height:20px; margin:10px 0 0; color:var(--muted); font-size:13px; }
.status.ok { color:var(--teal-dark); font-weight:750; }
.status.err { color:var(--danger); font-weight:750; }
.loading,.empty { padding:36px; color:var(--muted); text-align:center; }
.support-layout { display:grid; grid-template-columns:minmax(260px,36%) 1fr; min-height:560px; border:1px solid var(--line); border-radius:12px; overflow:hidden; }
.conversation-list { border-right:1px solid var(--line); overflow:auto; }
.conversation { width:100%; padding:14px; border:0; border-bottom:1px solid var(--line); border-radius:0; background:#fff; color:var(--ink); text-align:left; }
.conversation:hover,.conversation.active { background:#edf8f7; }
.conversation strong,.conversation small { display:block; }
.conversation small { color:var(--muted); }
.thread { display:flex; flex-direction:column; min-width:0; background:#f9fbfb; }
.thread-head { padding:15px 18px; border-bottom:1px solid var(--line); background:#fff; }
.thread-head h3 { margin-bottom:2px; }
.messages { flex:1; padding:18px; overflow:auto; }
.message { max-width:82%; margin:0 0 12px; padding:10px 12px; border:1px solid var(--line); border-radius:11px; background:#fff; white-space:pre-wrap; overflow-wrap:anywhere; }
.message.out { margin-left:auto; border-color:#bde6e2; background:#e9f8f6; }
.message .by { display:block; margin-bottom:4px; color:var(--muted); font-size:11px; }
.reply { padding:14px; border-top:1px solid var(--line); background:#fff; }
.reply textarea { min-height:92px; resize:vertical; }
.reply-actions { display:flex; gap:8px; justify-content:flex-end; margin-top:8px; }
.toast { position:fixed; right:20px; bottom:20px; max-width:380px; padding:12px 16px; border-radius:10px; background:var(--navy); color:#fff; opacity:0; transform:translateY(10px); pointer-events:none; transition:.2s; }
.toast.show { opacity:1; transform:none; }
@media (max-width:760px) {
  main { padding:22px 12px 50px; }
  .topbar { padding:0 14px; }
  .product { display:none; }
  .login-card,.panel { padding:19px; }
  .welcome,.panel-head { align-items:flex-start; }
  .packing-grid { grid-template-columns:1fr; }
  .support-layout { display:block; }
  .conversation-list { max-height:250px; border-right:0; border-bottom:1px solid var(--line); }
  .thread { min-height:520px; }
  .message { max-width:94%; }
}