/* Chipwrks — sales page
   Dark, technical register. No framework, no external fonts, no third-party requests. */

:root {
  --bg:        #0A0D12;
  --bg-alt:    #0E1219;
  --surface:   #131922;
  --surface-2: #18212C;
  --border:    #222C3A;
  --border-hi: #31404F;
  --text:      #E7ECF3;
  --muted:     #94A1B5;
  --accent:    #5CC8FF;
  --accent-dk: #1E86C4;
  --pass:      #46C25B;
  --fail:      #FF6B60;
  --question:  #E0A32E;

  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --wrap: 1080px;
  --gutter: 16px;
  --radius: 10px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 76px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.wrap.narrow { max-width: 720px; }

h1, h2, h3 { line-height: 1.22; margin: 0 0 .5em; letter-spacing: -0.015em; font-weight: 650; }
h1 { font-size: clamp(2rem, 5.2vw, 3.1rem); }
h2 { font-size: clamp(1.5rem, 3.4vw, 2.05rem); }
h3 { font-size: 1.06rem; font-weight: 640; }
p { margin: 0 0 1.05em; }
a { color: var(--accent); text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--accent); }
strong { font-weight: 650; color: #F4F7FB; }
code { font-family: var(--mono); font-size: .88em; }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--accent); color: #041018; padding: 10px 16px; border-radius: 0 0 8px 0; font-weight: 600;
}
.skip:focus { left: 0; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* ── header ─────────────────────────────────────────── */
.site-head {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.head-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }

.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--text); text-decoration: none; font-weight: 680; letter-spacing: -0.02em; font-size: 1.12rem; }
.brand-mark { width: 24px; height: 24px; color: var(--accent); flex: none; }
.brand-word { white-space: nowrap; }

.site-nav { display: flex; align-items: center; gap: 22px; }
.site-nav a { color: var(--muted); text-decoration: none; font-size: .93rem; white-space: nowrap; }
.site-nav a:hover { color: var(--text); }
.site-nav a.btn { color: #041018; }
@media (max-width: 900px) { .site-nav a:not(.btn) { display: none; } }

/* ── buttons ────────────────────────────────────────── */
.btn {
  display: inline-block;
  background: var(--accent); color: #041018;
  border: 1px solid var(--accent); border-radius: 8px;
  padding: 11px 20px; font: inherit; font-weight: 650; font-size: .95rem;
  text-decoration: none; cursor: pointer; transition: background .15s, border-color .15s;
}
.btn:hover { background: #7FD6FF; border-color: #7FD6FF; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-sm { padding: 8px 14px; font-size: .88rem; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border-hi); }
.btn-ghost:hover { background: var(--surface-2); border-color: var(--muted); }

/* ── hero ───────────────────────────────────────────── */
.hero { padding: clamp(56px, 9vw, 104px) 0 clamp(40px, 6vw, 72px); border-bottom: 1px solid var(--border); }
.eyebrow {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 18px;
}
.hero h1 { max-width: 21ch; }
.lede { font-size: clamp(1.02rem, 1.7vw, 1.17rem); color: #C9D3E0; max-width: 68ch; margin-top: 22px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 16px; }
.hero-note { font-size: .88rem; color: var(--muted); margin: 0; }

/* ── sections ───────────────────────────────────────── */
.section { padding: clamp(48px, 7vw, 84px) 0; }
.section.alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section-lede { color: #BCC7D6; max-width: 72ch; font-size: 1.02rem; }

/* ── console ────────────────────────────────────────── */
.console {
  margin-top: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.console-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; background: #0D1219; border-bottom: 1px solid var(--border);
}
.dots { display: flex; gap: 6px; }
.dots span { width: 10px; height: 10px; border-radius: 50%; background: var(--border-hi); }
.console-title { font-family: var(--mono); font-size: .78rem; color: var(--muted); }

.tabs { display: flex; flex-wrap: wrap; gap: 2px; padding: 10px 10px 0; background: #0D1219; border-bottom: 1px solid var(--border); }
.tabs button {
  appearance: none; background: transparent; border: 1px solid transparent; border-bottom: none;
  color: var(--muted); font: inherit; font-size: .89rem; font-weight: 580;
  padding: 9px 15px; border-radius: 7px 7px 0 0; cursor: pointer;
}
.tabs button:hover { color: var(--text); }
.tabs button[aria-selected="true"] {
  background: var(--surface); border-color: var(--border); color: var(--text);
  position: relative; top: 1px;
}

.console-meta {
  display: flex; flex-wrap: wrap; gap: 8px 26px;
  padding: 12px 16px; border-bottom: 1px solid var(--border);
  font-family: var(--mono); font-size: .78rem; color: var(--muted); background: #10161E;
}
.console-meta .k { color: #5F6D80; }
.console-meta code { color: #B9C6D6; }

.run-blurb { margin: 0; padding: 14px 16px 12px; font-size: .9rem; color: #BCC7D6; border-bottom: 1px solid var(--border); }

.run { list-style: none; margin: 0; padding: 6px 0; font-family: var(--mono); font-size: .8rem; line-height: 1.6; }
.run li { padding: 11px 16px; border-bottom: 1px solid #1A222C; }
.run li:last-child { border-bottom: none; }

.verdict { display: inline-block; font-weight: 700; padding: 1px 7px; border-radius: 4px; font-size: .74rem; letter-spacing: .04em; }
.verdict.pass { color: var(--pass); background: color-mix(in srgb, var(--pass) 14%, transparent); }
.verdict.fail { color: var(--fail); background: color-mix(in srgb, var(--fail) 14%, transparent); }
.check-id { color: var(--text); font-weight: 600; margin-left: 8px; }
.basis { color: #5F6D80; margin-left: 6px; }
.run .line { display: block; margin-top: 7px; padding-left: 14px; border-left: 2px solid #232E3B; color: var(--muted); }
.run .line b { color: #7E8B9E; font-weight: 600; display: inline-block; min-width: 68px; }
.run .line.obs { border-left-color: #2C3A49; color: #C3CEDC; }

.run-summary {
  margin: 0; padding: 14px 16px; background: #0D1219; border-top: 1px solid var(--border);
  font-family: var(--mono); font-size: .79rem; color: #B9C6D6; white-space: pre-wrap;
}

.console-disclaimer {
  margin: 0; padding: 16px; font-size: .86rem; color: var(--muted);
  background: color-mix(in srgb, var(--question) 7%, var(--surface));
  border-top: 1px solid color-mix(in srgb, var(--question) 26%, var(--border));
}
.console-disclaimer strong { color: var(--question); }

/* ── split / cards ──────────────────────────────────── */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 28px; }
@media (max-width: 820px) { .split, .grid-3 { grid-template-columns: 1fr; } }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.card h3 { margin-bottom: .6em; }
.card p:last-child { margin-bottom: 0; }
.card p { color: #BCC7D6; font-size: .96rem; }
.bad-card { border-color: color-mix(in srgb, var(--fail) 30%, var(--border)); }
.bad-card h3 { color: var(--fail); }
.good-card { border-color: color-mix(in srgb, var(--pass) 30%, var(--border)); }
.good-card h3 { color: var(--pass); }

pre.mini {
  font-family: var(--mono); font-size: .8rem; line-height: 1.6;
  background: #0C1118; border: 1px solid var(--border); border-radius: 7px;
  padding: 13px 14px; margin: 0 0 14px; overflow-x: auto; color: #C3CEDC;
}

/* ── checks list ────────────────────────────────────── */
.checks { list-style: none; margin: 28px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 820px) { .checks { grid-template-columns: 1fr; } }
.checks li { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; }
.checks .name { font-family: var(--mono); font-size: .84rem; color: var(--accent); display: block; margin-bottom: 7px; }
.checks h3 { font-size: 1rem; margin-bottom: .45em; }
.checks p { margin: 0; color: #BCC7D6; font-size: .93rem; }
.checks .tag {
  display: inline-block; margin-top: 11px; font-family: var(--mono); font-size: .71rem;
  letter-spacing: .05em; text-transform: uppercase; padding: 2px 8px; border-radius: 4px;
  color: var(--muted); background: var(--surface-2); border: 1px solid var(--border);
}
.checks .tag.balance { color: var(--pass); border-color: color-mix(in srgb, var(--pass) 30%, transparent); background: color-mix(in srgb, var(--pass) 10%, transparent); }

/* ── steps ──────────────────────────────────────────── */
.steps { margin: 28px 0 0; padding: 0; list-style: none; counter-reset: s; }
.steps li { counter-increment: s; position: relative; padding: 0 0 26px 52px; border-left: 1px solid var(--border); margin-left: 15px; }
.steps li:last-child { border-left-color: transparent; padding-bottom: 0; }
.steps li::before {
  content: counter(s);
  position: absolute; left: -16px; top: -2px;
  width: 31px; height: 31px; border-radius: 50%;
  background: var(--surface-2); border: 1px solid var(--border-hi); color: var(--accent);
  font-family: var(--mono); font-size: .82rem; font-weight: 700;
  display: grid; place-items: center;
}
.steps h3 { margin-bottom: .4em; }
.steps p { color: #BCC7D6; font-size: .96rem; margin: 0; max-width: 70ch; }

/* ── limits ─────────────────────────────────────────── */
.limits { list-style: none; margin: 28px 0 0; padding: 0; display: grid; gap: 14px; }
.limits li {
  background: var(--surface); border: 1px solid var(--border);
  border-left: 3px solid var(--question); border-radius: var(--radius); padding: 20px 22px;
}
.limits h3 { margin-bottom: .45em; }
.limits p { margin: 0; color: #BCC7D6; font-size: .96rem; max-width: 78ch; }

/* ── form ───────────────────────────────────────────── */
form { margin-top: 24px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 6px; color: #C9D3E0; }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; font-size: .96rem;
  background: var(--surface); color: var(--text);
  border: 1px solid var(--border-hi); border-radius: 8px; padding: 11px 13px;
}
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent); }
.field input[aria-invalid="true"], .field textarea[aria-invalid="true"] { border-color: var(--fail); }
.form-status { margin: 14px 0 0; font-size: .92rem; min-height: 1.4em; }
.form-status.ok { color: var(--pass); }
.form-status.err { color: var(--fail); }
.form-note { font-size: .84rem; color: var(--muted); margin-top: 14px; }

/* ── footer ─────────────────────────────────────────── */
.site-foot { background: var(--bg-alt); border-top: 1px solid var(--border); padding: 56px 0 28px; margin-top: 0; }
.foot-grid { display: grid; grid-template-columns: 1.25fr 1fr 1.5fr; gap: 36px; }
@media (max-width: 820px) { .foot-grid { grid-template-columns: 1fr; gap: 28px; } }
.brand-foot { margin-bottom: 12px; }
.foot-desc { color: var(--muted); font-size: .93rem; max-width: 34ch; }
.site-foot h3 { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: #6E7C90; margin-bottom: 14px; font-family: var(--mono); font-weight: 600; }
.site-foot nav { display: flex; flex-direction: column; gap: 9px; align-items: flex-start; }
.site-foot nav a { color: var(--muted); text-decoration: none; font-size: .93rem; }
.site-foot nav a:hover { color: var(--text); }
.foot-legal { font-size: .88rem; color: var(--muted); max-width: 52ch; }
.foot-legal strong { color: #C9D3E0; }

.foot-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 14px 20px;
  margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--border);
}
.age {
  flex: none; font-family: var(--mono); font-weight: 700; font-size: .82rem;
  border: 1.5px solid var(--muted); color: var(--muted);
  border-radius: 50%; width: 38px; height: 38px; display: grid; place-items: center;
}
.foot-bar p { margin: 0; font-size: .85rem; color: var(--muted); flex: 1 1 320px; }
.foot-bar .copy { flex: 0 0 auto; color: #6E7C90; }