:root {
  --ink: #0b1f4a;
  --blue: #1746d1;
  --sky: #cfe0ff;
  --paper: #f4efe3;
  --ember: #ff6a1a;
  --gold: #e6b422;
  --ok: #1fa35b;
  --bad: #d3341f;
  --line: rgba(23, 70, 209, 0.16);
  --display: "Bricolage Grotesque", "Trebuchet MS", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}
* { box-sizing: border-box; margin: 0; }
body {
  font-family: var(--mono);
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
  min-height: 100vh;
  padding-bottom: 40px;
}
a { color: inherit; }
header.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 14px 32px; background: var(--ink); color: var(--paper);
  border-bottom: 4px solid var(--ember); position: sticky; top: 0; z-index: 10;
}
.logo { font-family: var(--display); font-weight: 800; font-size: 26px; letter-spacing: -0.02em; text-decoration: none; }
.logo b { color: var(--ember); }
nav.main { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
nav.main a, nav.main button {
  font: 500 13px var(--mono); background: none; border: 1px solid transparent; color: var(--paper);
  padding: 8px 12px; cursor: pointer; text-transform: uppercase; letter-spacing: 0.06em; text-decoration: none;
}
nav.main a:hover, nav.main button:hover, nav.main a.on { border-color: var(--ember); color: var(--ember); }
nav.main .who { font-size: 12px; opacity: 0.75; padding: 0 8px; }
.badge { background: var(--ember); color: var(--ink); border-radius: 99px; padding: 1px 8px; margin-left: 6px; }
main { max-width: 1100px; margin: 0 auto; padding: 40px 32px; animation: rise 0.45s ease both; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
h1 { font-family: var(--display); font-weight: 800; font-size: clamp(40px, 7vw, 84px); line-height: 0.92; letter-spacing: -0.03em; }
h1 em { font-style: normal; color: var(--blue); }
h2 { font-family: var(--display); font-weight: 800; font-size: 32px; margin-bottom: 18px; }
.sub { max-width: 540px; margin: 18px 0 28px; line-height: 1.6; }
.hint { font-size: 12px; opacity: 0.7; }
.stamp {
  display: inline-block; border: 2px solid var(--ember); color: var(--ember); padding: 4px 10px; font-size: 12px;
  text-transform: uppercase; letter-spacing: 0.12em; transform: rotate(-3deg); margin-bottom: 18px;
}
.btn {
  font: 500 14px var(--mono); background: var(--blue); color: #fff; border: 2px solid var(--ink);
  padding: 12px 20px; cursor: pointer; box-shadow: 4px 4px 0 var(--ink); transition: 0.12s;
  text-transform: uppercase; letter-spacing: 0.05em; text-decoration: none; display: inline-block;
}
.btn:hover { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--ink); }
.btn.ember { background: var(--ember); color: var(--ink); }
.btn.ghost { background: var(--paper); color: var(--ink); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: 4px 4px 0 var(--ink); }
.hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center; }
.hero img { width: 100%; border: 2px solid var(--ink); box-shadow: 8px 8px 0 var(--ink); background: #fff; }
.hero .actions { display: flex; gap: 14px; flex-wrap: wrap; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 26px; margin-top: 24px; }
.card { background: #fff; border: 2px solid var(--ink); box-shadow: 6px 6px 0 var(--ink); display: flex; flex-direction: column; transition: 0.15s; }
.card:hover { transform: translate(-3px, -3px); box-shadow: 9px 9px 0 var(--blue); }
.card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-bottom: 2px solid var(--ink); display: block; background: var(--sky); }
.card .body { padding: 14px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card h3 { font-family: var(--display); font-size: 22px; }
.card p { font-size: 12px; line-height: 1.5; opacity: 0.85; }
.price { font-weight: 500; color: var(--blue); font-size: 20px; }
.stock { font-size: 11px; }
.stock.low { color: var(--ember); font-weight: 500; }
.stock.out { color: var(--bad); font-weight: 500; }
.card .btn { margin-top: auto; padding: 10px 12px; font-size: 12px; }
.panel { background: #fff; border: 2px solid var(--ink); box-shadow: 6px 6px 0 var(--ink); padding: 26px; max-width: 440px; }
label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; margin: 14px 0 6px; }
input { width: 100%; font: 400 15px var(--mono); padding: 10px; border: 2px solid var(--ink); background: var(--paper); color: var(--ink); }
.msg { margin-top: 14px; font-size: 13px; min-height: 18px; }
.msg.err { color: var(--bad); }
.msg.ok { color: var(--ok); }
table { width: 100%; border-collapse: collapse; background: #fff; border: 2px solid var(--ink); }
th, td { padding: 12px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { background: var(--ink); color: var(--paper); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; }
td img { width: 72px; height: 54px; object-fit: cover; border: 2px solid var(--ink); vertical-align: middle; margin-right: 10px; }
td .qty { display: inline-flex; align-items: center; gap: 8px; }
td .qty button { width: 28px; height: 28px; border: 2px solid var(--ink); background: var(--paper); cursor: pointer; font: 500 14px var(--mono); }
.total { text-align: right; margin: 20px 0; font: 800 34px var(--display); }
.steps { display: flex; margin-bottom: 28px; flex-wrap: wrap; }
.steps div { flex: 1; min-width: 110px; padding: 10px; border: 2px solid var(--ink); margin-right: -2px; font-size: 12px; text-transform: uppercase; background: #fff; letter-spacing: 0.06em; }
.steps div.on { background: var(--ember); }
.steps div.done { background: var(--ink); color: var(--paper); }
.link-btn { background: none; border: 0; color: var(--bad); cursor: pointer; font: 500 12px var(--mono); text-decoration: underline; }
.toast {
  position: fixed; left: 50%; top: 82px; transform: translateX(-50%); background: var(--ink); color: var(--paper);
  padding: 10px 18px; border-left: 4px solid var(--ember); font-size: 13px; z-index: 40; max-width: 90vw;
}
.toast.err { border-left-color: var(--bad); }

#chat-fab { position: fixed; right: 24px; bottom: 24px; z-index: 19; }
#chat {
  position: fixed; right: 24px; bottom: 24px; width: 360px; max-height: 64vh; background: #fff; border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 var(--ember); z-index: 20; display: none; flex-direction: column;
}
#chat.on { display: flex; }
#chat header { display: flex; justify-content: space-between; align-items: center; padding: 10px 14px; background: var(--ink); color: #fff; font-size: 13px; border-bottom: 2px solid var(--ember); }
#chat header button { background: none; border: 0; color: #fff; cursor: pointer; font-size: 20px; }
#chat-msgs { padding: 14px; overflow: auto; display: flex; flex-direction: column; gap: 10px; font-size: 13px; flex: 1; min-height: 160px; }
.m { padding: 8px 10px; max-width: 90%; line-height: 1.45; white-space: pre-wrap; overflow-wrap: anywhere; }
.m.bot { background: var(--sky); align-self: flex-start; border: 1px solid var(--ink); }
.m.me { background: var(--ink); color: var(--paper); align-self: flex-end; }
.m.blocked { background: #fde4df; border: 1px solid var(--bad); color: var(--bad); align-self: flex-start; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 14px 10px; }
.chips .group { width: 100%; font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em; opacity: 0.6; margin-top: 4px; }
.chip { font: 400 11px var(--mono); border: 1px solid var(--ink); background: var(--paper); padding: 4px 8px; cursor: pointer; }
.chip.demo { border-style: dashed; border-color: var(--ember); }
#chat form { display: flex; border-top: 2px solid var(--ink); }
#chat form input { border: 0; flex: 1; }
#chat form button { border: 0; background: var(--ember); font: 500 13px var(--mono); padding: 0 16px; cursor: pointer; }

@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; }
  #chat { width: calc(100% - 48px); }
  header.top { padding: 12px 18px; }
  main { padding: 28px 18px; }
}