/* Grading Arbitrage Scanner — page-specific styles on top of styles.css */

/* Shared nav (same rules the blog and /open/ carry locally). */
.blog-nav { position: sticky; top: 0; z-index: 80; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px;
  padding: 12px max(18px, env(safe-area-inset-left)); background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.blog-nav a { text-decoration: none; color: inherit; }
.blog-nav .brand { font-weight: 800; letter-spacing: .02em; white-space: nowrap; color: var(--text); }
.blog-nav .links { display: flex; gap: 14px; font-size: 13.5px; color: var(--muted); }
.blog-nav .links a:hover { color: var(--text); }

.grade-wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 18px 80px;
}

.grade-hero h1 {
  margin: 18px 0 8px;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  letter-spacing: -0.02em;
}
.grade-hero .tagline { color: var(--text-dim); max-width: 64ch; }

.grade-wrap h2 { margin: 40px 0 6px; font-size: 1.25rem; }
.section-note { color: var(--muted); margin: 0 0 14px; max-width: 70ch; }
.loading { color: var(--muted); }

/* ── Scan results ─────────────────────────────────────────────────── */
.buy-card {
  display: grid;
  grid-template-columns: 96px 1fr auto;
  gap: 14px;
  align-items: start;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-panel);
  padding: 14px;
  margin-bottom: 12px;
}
.buy-card.positive { border-color: color-mix(in srgb, var(--good) 45%, var(--border)); }
.buy-card img {
  width: 96px; height: 128px; object-fit: cover;
  border-radius: var(--radius-sm); background: var(--panel-3);
}
.buy-card .b-title { font-weight: 600; margin: 0 0 2px; }
.buy-card .b-sub { color: var(--muted); font-size: 0.85rem; margin: 0 0 8px; }
.buy-card .b-summary { color: var(--text-dim); font-size: 0.9rem; margin: 8px 0 0; max-width: 58ch; }
.buy-card .b-ev { text-align: right; min-width: 130px; }
.buy-card .b-ev .n { font-family: var(--mono); font-size: 1.3rem; font-weight: 700; }
.buy-card .b-ev .n.pos { color: var(--good); }
.buy-card .b-ev .n.neg { color: var(--bad); }
.buy-card .b-ev .d { color: var(--muted); font-size: 0.78rem; }

.dist-bar {
  display: flex; height: 10px; border-radius: 5px; overflow: hidden;
  border: 1px solid var(--border-strong); max-width: 320px;
}
.dist-bar span { display: block; height: 100%; }
.dist-bar .g10 { background: var(--good); }
.dist-bar .g9  { background: var(--accent-2); }
.dist-bar .g8  { background: var(--accent); }
.dist-bar .g7  { background: var(--bad); }
.dist-legend { color: var(--muted); font-size: 0.75rem; font-family: var(--mono); margin-top: 4px; }

.scan-empty {
  background: var(--panel);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 18px;
  color: var(--text-dim);
}
.scan-empty code { font-family: var(--mono); color: var(--accent); }

/* ── Calculator ───────────────────────────────────────────────────── */
.calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin: 0;
  border: 0;
  padding: 0;
}
.calc-grid fieldset {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px 14px;
  margin: 0;
}
.calc-grid legend { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; padding: 0 6px; }
.calc-grid label {
  display: flex; justify-content: space-between; align-items: center;
  gap: 10px; margin: 8px 0; font-size: 0.9rem; color: var(--text-dim);
}
.calc-grid input {
  width: 108px;
  background: var(--panel-3);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 7px 9px;
  font-family: var(--mono);
  font-size: 0.9rem;
}
.calc-grid .hint { color: var(--muted); font-size: 0.78rem; margin: 10px 0 0; }

.calc-out {
  margin-top: 16px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}
.calc-out .headline { font-size: 1.35rem; font-weight: 700; font-family: var(--mono); }
.calc-out .headline.pos { color: var(--good); }
.calc-out .headline.neg { color: var(--bad); }
.calc-out .rows { color: var(--text-dim); font-size: 0.9rem; margin-top: 8px; }
.calc-out .rows div { display: flex; justify-content: space-between; max-width: 380px; padding: 2px 0; }
.calc-out .rows b { font-family: var(--mono); font-weight: 600; }

.grade-fineprint ul { color: var(--text-dim); font-size: 0.92rem; padding-left: 20px; }
.grade-fineprint li { margin: 6px 0; }

@media (max-width: 640px) {
  .buy-card { grid-template-columns: 72px 1fr; }
  .buy-card .b-ev { grid-column: 1 / -1; text-align: left; }
  .buy-card img { width: 72px; height: 96px; }
}