/* Practice scenarios page — sits on ../kit.css tokens. Company chrome, both themes. */

.pf-wrap { width: min(100% - var(--gutter) * 2, var(--wrap)); margin-inline: auto; }

/* ---------- header ---------- */
.pf-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--glass);
  backdrop-filter: saturate(160%) blur(14px); -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.pf-nav { display: flex; align-items: center; justify-content: space-between; gap: var(--s-5); height: 64px; }
.brand { display: inline-flex; align-items: center; gap: var(--s-3); min-width: 0; }
.brand-mark { width: 28px; height: 28px; flex: none; }
.brand-text { font-family: var(--font-display); font-size: 1.2rem; letter-spacing: -0.01em; line-height: 1; white-space: nowrap; }
.brand-text em { font-style: italic; color: var(--ink-3); }
.pf-links { display: flex; gap: var(--s-5); font-size: var(--fs-sm); color: var(--ink-2); }
.pf-links a { position: relative; padding: var(--s-2) 0; transition: color 0.25s; }
.pf-links a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--ink); transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease-out); }
.pf-links a:hover { color: var(--ink); }
.pf-links a:hover::after { transform: scaleX(1); }
.pf-actions { display: flex; align-items: center; gap: var(--s-3); flex: none; }
.theme-toggle {
  width: 38px; height: 38px; border-radius: 999px; display: grid; place-items: center;
  border: 1px solid var(--line-strong); color: var(--ink-2);
  transition: border-color 0.3s, color 0.3s, background-color 0.3s;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink); }
.theme-toggle svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; overflow: visible; }
.theme-toggle .tt-sun, .theme-toggle .tt-rays, .theme-toggle .tt-moon { transition: transform 0.55s var(--ease-out), opacity 0.35s; transform-origin: 12px 12px; }
[data-theme="light"] .tt-moon { opacity: 0; transform: rotate(-40deg) scale(0.6); }
[data-theme="dark"] .tt-sun { opacity: 0; transform: scale(0.4); }
[data-theme="dark"] .tt-rays { opacity: 0; transform: rotate(60deg) scale(0.5); }

/* ---------- hero ---------- */
.pf-hero { padding-block: var(--section) var(--section-sm); }
.pf-hero h1 { font-size: var(--fs-2xl); margin-bottom: var(--s-5); max-width: 18ch; }
.pf-hero .lede { margin-bottom: var(--s-6); max-width: 60ch; }

/* ---------- scenario grid ---------- */
.pf-section { padding-bottom: var(--section); }
.pf-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-4); }
.pf-card {
  display: flex; flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--s-5);
  transition: border-color 0.3s, transform 0.35s var(--ease-out), box-shadow 0.3s;
}
.pf-card:hover { border-color: var(--line-strong); transform: translateY(-2px); box-shadow: var(--shadow); }
.pf-card-alt { background: var(--bg-2); }
.pf-card-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--s-2) var(--s-3); margin-bottom: var(--s-4); }
.pf-trade {
  font-family: var(--font-mono); font-size: var(--fs-xs); font-weight: 500;
  letter-spacing: 0.10em; text-transform: uppercase; color: var(--ink-3);
}
.pf-fictional {
  font-family: var(--font-mono); font-size: var(--fs-xs); letter-spacing: 0.04em;
  color: var(--accent-ink); background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: 999px; padding: 0.15rem 0.6rem;
  white-space: nowrap;
}
.pf-card h3 { font-family: var(--font-display); font-size: var(--fs-lg); font-weight: 400; letter-spacing: -0.01em; line-height: 1.1; margin-bottom: var(--s-3); }
.pf-situation { color: var(--ink-2); font-size: var(--fs-sm); line-height: 1.55; margin-bottom: var(--s-5); text-wrap: pretty; }
.pf-situation strong { color: var(--ink); font-weight: 500; }
.pf-tools-label { margin: auto 0 var(--s-2); }
.pf-tools { display: flex; flex-direction: column; gap: var(--s-1); list-style: none; }
.pf-tools a {
  display: inline-flex; align-items: center; gap: var(--s-2);
  font-size: var(--fs-sm); font-weight: 500; color: var(--ink);
  padding: var(--s-1) 0;
  background-image: linear-gradient(currentColor, currentColor);
  background-repeat: no-repeat; background-size: 0% 1px; background-position: 0 100%;
  transition: background-size 0.45s var(--ease-out);
}
.pf-tools a::after { content: "→"; font-family: var(--font-mono); color: var(--ink-3); transition: transform 0.35s var(--ease-out); }
.pf-tools a:hover { background-size: 100% 1px; }
.pf-tools a:hover::after { transform: translateX(4px); }
.pf-note { margin-top: var(--s-6); max-width: 70ch; }

/* ---------- footer ---------- */
.pf-footer { border-top: 1px solid var(--line); background: var(--bg-2); }
.pf-footer-grid { display: grid; grid-template-columns: 1fr 1fr 1.4fr; gap: var(--s-6); padding-block: var(--s-7) var(--s-6); }
.pf-footer-col { display: flex; flex-direction: column; gap: var(--s-2); font-size: var(--fs-sm); }
.pf-footer-col .eyebrow { margin-bottom: var(--s-3); }
.pf-footer-col a { color: var(--ink-2); width: fit-content; transition: color 0.25s; }
.pf-footer-col a:hover { color: var(--ink); }
.pf-footer-cta p:not(.eyebrow) { color: var(--ink-2); margin-bottom: var(--s-4); max-width: 40ch; }
.pf-footer-cta .btn { width: fit-content; color: var(--bg); }
.pf-footer-base { display: flex; justify-content: space-between; gap: var(--s-4); padding-block: var(--s-5); border-top: 1px solid var(--line); font-size: var(--fs-xs); color: var(--ink-4); }
.pf-footer-base .mono { font-size: var(--fs-xs); letter-spacing: 0.06em; color: inherit; }

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .pf-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .pf-links { display: none; }
  .pf-footer-grid { grid-template-columns: 1fr 1fr; }
  .pf-footer-cta { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .pf-nav { height: 60px; }
  .brand-text { font-size: 1.05rem; }
  .pf-cta { display: none; }
  .pf-grid { grid-template-columns: 1fr; }
  .pf-footer-grid { grid-template-columns: 1fr; }
  .pf-footer-base { flex-direction: column; gap: var(--s-2); }
}