:root {
  --ink: #14202e; --ink-2: #4a5868; --ink-3: #7b8796; --line: #e3e7ec; --bg: #f5f6f8; --card: #fff;
  --brand: #12385c; --brand-2: #1d5287; --accent: #e8a33d; --ok: #1f7a4d; --warn: #a86300; --bad: #b3261e;
  --radius: 10px; --shadow: 0 1px 2px rgba(20,32,46,.06), 0 4px 14px rgba(20,32,46,.06);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--ink); background: var(--bg);
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--brand-2); }
.hidden { display: none !important; }
.sub { color: var(--ink-3); font-size: 13px; }

/* header */
.top { position: sticky; top: 0; z-index: 20; background: var(--brand); color: #fff; }
.top .bar { max-width: 1180px; margin: 0 auto; display: flex; align-items: center; gap: 16px; padding: 10px 16px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .2px; text-decoration: none; color: #fff; }
.logo svg { width: 30px; height: 30px; }
.logo small { display: block; font-weight: 500; font-size: 11px; opacity: .75; letter-spacing: .4px; text-transform: uppercase; }
.top nav { display: flex; gap: 4px; margin-left: 8px; }
.top nav button { background: none; border: 0; color: #dbe6f2; padding: 8px 10px; border-radius: 8px; cursor: pointer; }
.top nav button.on, .top nav button:hover { background: rgba(255,255,255,.12); color: #fff; }
.top .spacer { flex: 1; }
.acct { font-size: 13px; text-align: right; line-height: 1.2; }
.acct b { display: block; }
.cart-btn { position: relative; background: var(--accent); color: #1b1300; border: 0; border-radius: 999px; padding: 8px 14px; font-weight: 700; cursor: pointer; display: flex; gap: 6px; align-items: center; }
.cart-btn .n { background: #1b1300; color: #fff; border-radius: 999px; font-size: 12px; padding: 0 7px; }
.link { background: none; border: 0; color: #dbe6f2; text-decoration: underline; cursor: pointer; font-size: 13px; padding: 0; }
.demo { background: #fff7e8; color: #6b4300; text-align: center; font-size: 12.5px; padding: 5px 12px; border-bottom: 1px solid #f1dfbd; }

main { max-width: 1180px; margin: 0 auto; padding: 20px 16px 60px; }
h1 { font-size: 24px; margin: 0 0 4px; }
h2 { font-size: 18px; margin: 24px 0 10px; }

/* login */
.login { max-width: 400px; margin: 9vh auto; background: var(--card); border-radius: 14px; box-shadow: var(--shadow); padding: 28px; }
.login h1 { font-size: 22px; }
.login p { color: var(--ink-2); margin: 6px 0 18px; }
.field { display: grid; gap: 6px; margin-bottom: 14px; }
.field label { font-size: 13px; font-weight: 600; color: var(--ink-2); }
input, select, textarea { width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; background: #fff; }
input:focus, select:focus, textarea:focus { outline: 2px solid #9cc0e6; border-color: var(--brand-2); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 8px; padding: 10px 16px; font-weight: 650; cursor: pointer; background: var(--brand); color: #fff; text-decoration: none; }
.btn:hover { background: var(--brand-2); }
.btn.ghost { background: #fff; color: var(--brand); border: 1px solid var(--line); }
.btn.big { width: 100%; padding: 13px; font-size: 16px; }
.btn:disabled { opacity: .55; cursor: default; }
.err { color: var(--bad); font-size: 14px; min-height: 20px; }

/* shop */
.shop-head { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; justify-content: space-between; margin-bottom: 14px; }
.search { max-width: 340px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 18px; }
.chip { border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 6px 12px; cursor: pointer; font-size: 14px; }
.chip.on { background: var(--brand); color: #fff; border-color: var(--brand); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; display: flex; flex-direction: column; }
.thumb { aspect-ratio: 4 / 3; display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 34px; letter-spacing: 1px; position: relative; }
.thumb img { width: 100%; height: 100%; object-fit: cover; }
.thumb svg { width: 56px; height: 56px; opacity: .9; }
.thumb .tag { position: absolute; top: 10px; left: 10px; font-size: 11px; font-weight: 700; background: rgba(0,0,0,.28); padding: 3px 8px; border-radius: 999px; letter-spacing: .3px; }
.card .body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.card h3 { font-size: 15.5px; margin: 0; }
.card .id { font: 12px ui-monospace, SFMono-Regular, Consolas, monospace; color: var(--ink-3); }
.card .desc { color: var(--ink-2); font-size: 13.5px; flex: 1; }
.price { font-size: 18px; font-weight: 750; }
.price small { font-size: 12px; font-weight: 500; color: var(--ink-3); }
.stock { font-size: 12.5px; }
.stock.in { color: var(--ok); } .stock.out { color: var(--warn); }
.buy { display: flex; gap: 8px; margin-top: 8px; }
.buy input { width: 72px; padding: 8px; text-align: center; }
.buy .btn { flex: 1; padding: 8px 10px; }
.empty { text-align: center; color: var(--ink-3); padding: 50px 0; }

/* cart drawer */
.scrim { position: fixed; inset: 0; background: rgba(10,20,30,.35); z-index: 30; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(440px, 100vw); background: #fff; z-index: 31; display: flex; flex-direction: column; box-shadow: -8px 0 30px rgba(0,0,0,.15); }
.drawer header { display: flex; justify-content: space-between; align-items: center; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.drawer header h2 { margin: 0; }
.x { background: none; border: 0; font-size: 24px; cursor: pointer; color: var(--ink-2); }
.lines { flex: 1; overflow: auto; padding: 6px 18px; }
.line { display: grid; grid-template-columns: 1fr auto auto; gap: 10px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); }
.line input { width: 64px; padding: 6px; text-align: center; }
.line .rm { background: none; border: 0; color: var(--bad); cursor: pointer; font-size: 13px; }
.drawer footer { padding: 16px 18px; border-top: 1px solid var(--line); display: grid; gap: 10px; }
.tot { display: flex; justify-content: space-between; font-weight: 700; font-size: 16px; }
.note { font-size: 12.5px; color: var(--ink-3); }

/* checkout + orders */
.two { display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px; align-items: start; }
.panel { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .4px; color: var(--ink-3); font-weight: 650; }
td.num, th.num { text-align: right; white-space: nowrap; }
.pill { display: inline-block; font-size: 12px; font-weight: 650; border-radius: 999px; padding: 2px 9px; background: #e8f3ec; color: var(--ok); white-space: nowrap; }
.pill.warn { background: #fff2dd; color: var(--warn); } .pill.bad { background: #fde8e6; color: var(--bad); } .pill.grey { background: #eef0f3; color: var(--ink-2); }
.done { text-align: center; padding: 28px 18px; }
.done .big { font-size: 40px; font-weight: 800; color: var(--brand); letter-spacing: 1px; margin: 6px 0; }
.p21box { background: #f2f6fb; border: 1px solid #d6e3f1; border-radius: 10px; padding: 12px 14px; font-size: 14px; }
.order { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 14px 16px; margin-bottom: 12px; }
.order .h { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; }

/* admin */
.tabs { display: flex; gap: 6px; margin: 10px 0 16px; flex-wrap: wrap; }
.tabs button { border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: 8px 12px; cursor: pointer; }
.tabs button.on { background: var(--brand); color: #fff; border-color: var(--brand); }
.adm-row td input, .adm-row td select, .adm-row td textarea { padding: 6px 8px; font-size: 14px; }
.code { font: 700 22px ui-monospace, Consolas, monospace; letter-spacing: 2px; background: #fff7e8; border: 1px dashed var(--accent); padding: 8px 12px; border-radius: 8px; display: inline-block; }
pre.url { white-space: pre-wrap; word-break: break-all; background: #0f1b28; color: #d7e6f5; padding: 12px; border-radius: 8px; font-size: 13px; }
ol.steps li { margin-bottom: 8px; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 10px; z-index: 50; box-shadow: var(--shadow); }

@media (max-width: 760px) {
  .two { grid-template-columns: 1fr; }
  .top nav { display: none; }
  .acct { display: none; }
  .top .bar { gap: 10px; }
  .mobile-nav { display: flex !important; }
}
.mobile-nav { display: none; gap: 6px; margin-bottom: 12px; }
.mobile-nav button { flex: 1; }