/* All Tech Manuals — shared styles */
:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel2: #1c2330;
  --line: #2b3648;
  --text: #e6edf3;
  --muted: #8b98a9;
  --accent: #2f81f7;
  --accent-h: #4a94ff;
  --good: #3fb950;
  --bad: #f85149;
  --warn: #d29922;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1000px; margin: 0 auto; padding: 0 20px; }

header.site {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0; border-bottom: 1px solid var(--line);
}
.logo { font-weight: 800; font-size: 20px; letter-spacing: .5px; color: var(--text); }
.logo span { color: var(--accent); }
nav.actions { display: flex; gap: 10px; align-items: center; }

.btn {
  display: inline-block; border: 1px solid var(--line); border-radius: 8px;
  background: var(--panel2); color: var(--text); padding: 9px 16px;
  font-size: 15px; font-weight: 600; cursor: pointer; text-align: center;
}
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-h); }
.btn.small { padding: 5px 10px; font-size: 13px; }
.btn.danger { border-color: var(--bad); color: var(--bad); background: transparent; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

.hero { text-align: center; padding: 70px 0 40px; }
.hero h1 { font-size: 42px; line-height: 1.15; margin-bottom: 16px; }
.hero h1 em { color: var(--accent); font-style: normal; }
.hero p.sub { color: var(--muted); font-size: 19px; max-width: 640px; margin: 0 auto 30px; }

.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; padding: 30px 0; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 22px;
}
.card h3 { margin-bottom: 8px; font-size: 17px; }
.card p { color: var(--muted); font-size: 14.5px; }

.pricing { max-width: 420px; margin: 30px auto 60px; text-align: center; }
.pricing .price { font-size: 52px; font-weight: 800; }
.pricing .price small { font-size: 18px; color: var(--muted); font-weight: 500; }
.pricing ul { list-style: none; margin: 18px 0 22px; text-align: left; }
.pricing li { padding: 6px 0 6px 26px; position: relative; color: var(--text); font-size: 15px; }
.pricing li::before { content: "✓"; color: var(--good); position: absolute; left: 4px; font-weight: 700; }

footer.site { border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; padding: 24px 0 40px; text-align: center; }

/* Modal / forms */
.modal-back {
  position: fixed; inset: 0; background: rgba(0,0,0,.6); display: none;
  align-items: center; justify-content: center; z-index: 50; padding: 20px;
}
.modal-back.open { display: flex; }
.modal {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  width: 100%; max-width: 400px; padding: 26px;
}
.modal h2 { margin-bottom: 16px; font-size: 20px; }
label.f { display: block; margin-bottom: 12px; font-size: 13.5px; color: var(--muted); }
label.f input, label.f select {
  display: block; width: 100%; margin-top: 5px; padding: 10px 12px;
  background: var(--bg); color: var(--text); border: 1px solid var(--line);
  border-radius: 8px; font-size: 15px;
}
label.f input:focus, label.f select:focus { outline: none; border-color: var(--accent); }
.form-msg { font-size: 14px; margin: 10px 0; min-height: 18px; }
.form-msg.err { color: var(--bad); }
.form-msg.ok { color: var(--good); }
.switch-mode { font-size: 13.5px; color: var(--muted); margin-top: 14px; text-align: center; }

/* App */
.tool { padding: 26px 0 60px; }
.tool h2 { font-size: 22px; margin: 24px 0 12px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 760px) { .grid2 { grid-template-columns: 1fr; } }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; }
.row label.f { flex: 1 1 160px; margin-bottom: 0; }
.usage { color: var(--muted); font-size: 13px; margin-top: 8px; }
.progress { color: var(--warn); font-size: 15px; padding: 12px 0; }
.result-doc {
  display: flex; justify-content: space-between; gap: 10px; align-items: center;
  border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin-top: 10px;
  background: var(--panel2);
}
.result-doc .meta { font-size: 14px; }
.result-doc .meta .t { font-weight: 600; }
.result-doc .meta .s { color: var(--muted); font-size: 12.5px; }
.badge { font-size: 11px; padding: 2px 8px; border-radius: 20px; border: 1px solid var(--line); color: var(--muted); }
.badge.v { color: var(--good); border-color: var(--good); }
.parts-table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 14.5px; }
.parts-table th, .parts-table td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.parts-table th { color: var(--muted); font-weight: 600; font-size: 12.5px; text-transform: uppercase; }
.paywall { text-align: center; padding: 60px 20px; }
.paywall h2 { font-size: 26px; margin-bottom: 10px; }
.paywall p { color: var(--muted); margin-bottom: 20px; }
.notice { border: 1px solid var(--warn); border-radius: 10px; color: var(--warn); font-size: 14px; padding: 10px 14px; margin: 14px 0; }

/* Admin */
.admin-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.admin-table th, .admin-table td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.admin-table th { color: var(--muted); font-size: 11.5px; text-transform: uppercase; }
.stat-row { display: flex; gap: 14px; flex-wrap: wrap; margin: 14px 0; }
.stat { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 12px 18px; }
.stat .n { font-size: 24px; font-weight: 800; }
.stat .l { color: var(--muted); font-size: 12.5px; }
.table-scroll { overflow-x: auto; }