/* GTM Lab — deliberately plain. The site is a fixture, not a portfolio piece. */

:root {
  --ink: #16181d;
  --muted: #5b6472;
  --line: #e3e7ee;
  --bg: #ffffff;
  --soft: #f6f8fb;
  --accent: #2f5bea;
  --ok: #1a7f4b;
  --no: #b4402f;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

a { color: var(--accent); }

.wrap { max-width: 940px; margin: 0 auto; padding: 0 20px; }

/* ---------- header ---------- */
.site-head {
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; background: rgba(255,255,255,.92);
  backdrop-filter: blur(6px); z-index: 50;
}
.site-head .wrap { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { font-weight: 700; letter-spacing: -.02em; text-decoration: none; color: var(--ink); }
.brand span { color: var(--accent); }
.site-nav { display: flex; gap: 18px; margin-left: auto; flex-wrap: wrap; }
.site-nav a { text-decoration: none; color: var(--muted); font-size: 14px; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }

/* ---------- generic ---------- */
h1 { font-size: 34px; line-height: 1.2; letter-spacing: -.02em; margin: 32px 0 8px; }
h2 { font-size: 22px; margin: 32px 0 8px; letter-spacing: -.01em; }
h3 { font-size: 17px; margin: 20px 0 6px; }
.lede { color: var(--muted); font-size: 18px; margin: 0 0 24px; }
.muted { color: var(--muted); }
main { padding-bottom: 80px; }

.btn {
  display: inline-block; border: 0; cursor: pointer;
  background: var(--accent); color: #fff; font: inherit; font-weight: 600;
  padding: 11px 20px; border-radius: var(--radius); text-decoration: none;
}
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--accent); box-shadow: inset 0 0 0 1px var(--line); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.card {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; background: var(--bg);
}
.note {
  background: var(--soft); border-left: 3px solid var(--accent);
  padding: 12px 16px; border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 14px; color: var(--muted); margin: 18px 0;
}
.note strong { color: var(--ink); }

code, kbd { font-family: var(--mono); font-size: .92em; background: var(--soft); padding: 1px 5px; border-radius: 4px; }

/* ---------- shop ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 16px; margin: 20px 0; }
.product { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.product .thumb { aspect-ratio: 4/3; display: grid; place-items: center; font-size: 40px; background: var(--soft); }
.product .body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product h3 { margin: 0; font-size: 15px; }
.product .price { font-weight: 700; }
.product .cat { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.product .btn { margin-top: auto; text-align: center; font-size: 14px; padding: 8px 12px; }

table.cart { width: 100%; border-collapse: collapse; margin: 16px 0; }
table.cart th, table.cart td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); font-size: 14px; }
table.cart th { color: var(--muted); font-weight: 600; }
table.cart td.num, table.cart th.num { text-align: right; }
.cart-total { font-size: 20px; font-weight: 700; text-align: right; margin: 12px 0 20px; }

/* ---------- forms ---------- */
.field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
.field label { font-size: 13px; font-weight: 600; }
.field input, .field select, .field textarea {
  font: inherit; padding: 9px 11px; border: 1px solid var(--line);
  border-radius: 8px; background: var(--bg); color: var(--ink);
}
.field .err { color: var(--no); font-size: 12px; min-height: 15px; }
form.narrow { max-width: 440px; }

/* ---------- quiz ---------- */
.quiz-step { display: none; }
.quiz-step.on { display: block; }
.answers { display: grid; gap: 10px; margin: 16px 0; }
.answers button {
  text-align: left; font: inherit; padding: 12px 14px; cursor: pointer;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg);
}
.answers button:hover { border-color: var(--accent); }
.progress { height: 5px; background: var(--soft); border-radius: 3px; overflow: hidden; margin: 14px 0 4px; }
.progress i { display: block; height: 100%; background: var(--accent); transition: width .25s; }

/* ---------- consent banner ---------- */
.consent {
  position: fixed; inset: auto 16px 16px 16px; z-index: 200;
  background: var(--bg); border: 1px solid var(--line); border-radius: 12px;
  padding: 18px; box-shadow: 0 12px 32px rgba(16,20,30,.16);
  max-width: 560px; margin: 0 auto; display: none;
}
.consent.on { display: block; }
.consent p { margin: 0 0 12px; font-size: 14px; color: var(--muted); }
.consent .row { display: flex; gap: 8px; flex-wrap: wrap; }
.consent label { display: flex; gap: 7px; align-items: center; font-size: 13px; margin-bottom: 7px; }
.consent .cats { margin: 10px 0 14px; }

/* ---------- lab console ---------- */
.labc { position: fixed; right: 14px; bottom: 14px; z-index: 300; font-size: 13px; }
.labc-toggle {
  display: flex; align-items: center; gap: 8px; margin-left: auto;
  background: #16181d; color: #fff; border: 0; border-radius: 999px;
  padding: 9px 15px; cursor: pointer; font: inherit; font-weight: 600;
  box-shadow: 0 6px 18px rgba(16,20,30,.28);
}
.labc-dot { width: 8px; height: 8px; border-radius: 50%; background: #47d17c; }
.labc-count { background: rgba(255,255,255,.18); border-radius: 999px; padding: 1px 8px; font-size: 11px; }
.labc-panel {
  width: min(400px, calc(100vw - 28px)); max-height: min(72vh, 640px);
  margin-top: 10px; background: var(--bg); border: 1px solid var(--line);
  border-radius: 12px; box-shadow: 0 16px 40px rgba(16,20,30,.2);
  display: flex; flex-direction: column; overflow: hidden;
}
.labc-section { padding: 12px 14px; border-bottom: 1px solid var(--line); }
.labc-section.labc-grow { flex: 1; overflow-y: auto; border-bottom: 0; }
.labc-section h4 {
  margin: 0 0 8px; font-size: 11px; text-transform: uppercase;
  letter-spacing: .07em; color: var(--muted); display: flex; align-items: center;
}
.labc-clear { margin-left: auto; font: inherit; font-size: 11px; background: none; border: 0; color: var(--accent); cursor: pointer; text-transform: none; letter-spacing: 0; }
.labc-row { display: flex; gap: 10px; padding: 2px 0; font-family: var(--mono); font-size: 11.5px; }
.labc-k { color: var(--muted); flex: 1; }
.labc-v { font-weight: 600; }
.labc-v.ok { color: var(--ok); }
.labc-v.no { color: var(--no); }
.labc-src { font-family: var(--mono); font-size: 10.5px; color: var(--muted); word-break: break-all; margin-top: 6px; }
.labc-note { font-size: 11.5px; color: var(--muted); margin: 8px 0 0; }
.labc-note.warn { color: var(--no); }
.labc-actions { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; }
.labc-actions button {
  font: inherit; font-size: 11.5px; padding: 5px 10px; cursor: pointer;
  border: 1px solid var(--line); background: var(--bg); border-radius: 7px;
}
.labc-actions button:hover { border-color: var(--accent); color: var(--accent); }
.labc-log { list-style: none; margin: 0; padding: 0; }
.labc-item { border-bottom: 1px dashed var(--line); padding: 7px 0; }
.labc-item.rejected { background: #fff4f2; margin: 0 -14px; padding: 7px 14px; }
.labc-item-head { display: flex; gap: 8px; align-items: baseline; }
.labc-ev { font-family: var(--mono); font-weight: 700; font-size: 12px; }
.labc-item.rejected .labc-ev { color: var(--no); }
.labc-time { margin-left: auto; color: var(--muted); font-size: 10.5px; font-family: var(--mono); }
.labc-payload {
  margin: 5px 0 0; font-family: var(--mono); font-size: 10.5px; line-height: 1.45;
  background: var(--soft); padding: 7px 9px; border-radius: 6px;
  max-height: 190px; overflow: auto; white-space: pre-wrap; word-break: break-word;
}
.labc-problems { margin: 4px 0 0; padding-left: 16px; color: var(--no); font-size: 11px; }

@media (max-width: 560px) {
  h1 { font-size: 27px; }
  .site-head .wrap { height: auto; padding: 10px 20px; flex-wrap: wrap; gap: 10px; }
}