/* Walkthroughs shell — sits on ../kit.css tokens. Company chrome, both themes. */

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

/* ---------- header ---------- */
.walk-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);
}
.walk-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); }
.walk-links { display: flex; gap: var(--s-5); font-size: var(--fs-sm); color: var(--ink-2); }
.walk-links a { position: relative; padding: var(--s-2) 0; transition: color 0.25s; }
.walk-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); }
.walk-links a:hover { color: var(--ink); }
.walk-links a:hover::after { transform: scaleX(1); }
.walk-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); }

/* ---------- main ---------- */
.walk-main { padding-block: var(--s-7) var(--s-8); }
.walk-h1 { font-size: var(--fs-xl); margin-bottom: var(--s-4); }
.pain-intro { margin-bottom: var(--s-6); }
.pain-intro .eyebrow { margin-bottom: var(--s-4); }
.pain-intro-full { margin: 0; max-width: var(--measure-narrow); }

.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-4);
}

.pain-card {
  display: flex; flex-direction: column; align-items: flex-start;
  width: 100%; text-align: left;
  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;
}
.pain-card:hover { border-color: var(--line-strong); transform: translateY(-2px); box-shadow: var(--shadow); }
.pain-card.is-on { border-color: var(--accent); background: var(--accent-soft); }
.pain-card-kicker {
  display: block; font-family: var(--font-mono); font-size: var(--fs-xs); font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3);
  margin-bottom: var(--s-3);
}
.pain-card h3 { margin: 0 0 var(--s-2); font-family: var(--font-display); font-size: var(--fs-lg); font-weight: 400; letter-spacing: -0.01em; line-height: 1.1; }
.pain-card p { margin: 0; color: var(--ink-2); font-size: var(--fs-sm); line-height: 1.5; }
.pain-card-go { margin-top: auto; padding-top: var(--s-4); font-size: var(--fs-sm); font-weight: 500; color: var(--accent-ink); }

body.is-walking .pain-grid { display: none; }
body.is-walking .pain-intro-full { display: none; }
body.is-walking .pain-intro { margin-bottom: var(--s-3); }

/* rail of pain chips while walking */
.pain-rail {
  display: flex; flex-wrap: wrap; gap: var(--s-2);
  position: sticky; top: 64px; z-index: 40;
  background: var(--glass);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  padding: var(--s-3) 0;
  margin: 0 0 var(--s-2);
  border-bottom: 1px solid var(--line);
}
.pain-rail-btn {
  font-size: var(--fs-xs); font-weight: 500; letter-spacing: 0.01em;
  border: 1px solid var(--line-strong); background: transparent; color: var(--ink-2);
  border-radius: 999px; padding: 0.45rem 0.85rem;
  transition: border-color 0.25s, color 0.25s, background-color 0.25s;
}
.pain-rail-btn:hover { border-color: var(--ink); color: var(--ink); }
.pain-rail-btn.is-on { border-color: var(--ink); background: var(--ink); color: var(--bg); }

.pain-stage { display: grid; gap: var(--s-4); margin-top: var(--s-5); scroll-margin-top: 120px; }

.pain-head h2 { margin: 0 0 var(--s-2); font-size: var(--fs-lg); }
.pain-head p { margin: 0; color: var(--ink-2); max-width: var(--measure); }

.pain-steps { display: flex; flex-wrap: wrap; gap: var(--s-2); }
.pain-step {
  display: inline-flex; align-items: center; gap: var(--s-2);
  border: 1px solid var(--line); background: var(--surface);
  border-radius: 999px; padding: 0.4rem 0.85rem 0.4rem 0.4rem;
  font-size: var(--fs-sm); color: var(--ink-2);
  transition: border-color 0.25s, background-color 0.25s, color 0.25s;
}
.pain-step:hover { border-color: var(--line-strong); color: var(--ink); }
.pain-step.is-on { border-color: var(--accent); background: var(--accent-soft); color: var(--ink); font-weight: 500; }
.pain-step.is-done { opacity: 0.7; }
.pain-step-n {
  width: 24px; height: 24px; border-radius: 50%;
  display: grid; place-items: center; flex-shrink: 0;
  font-family: var(--font-mono); font-size: var(--fs-xs); font-variant-numeric: tabular-nums;
  background: var(--bg-3); color: var(--ink-2);
}
.pain-step.is-on .pain-step-n { background: var(--accent); color: #fff; }
[data-theme="dark"] .pain-step.is-on .pain-step-n { color: var(--bg); }
.pain-step.is-done .pain-step-n { background: var(--accent-soft); color: var(--accent-ink); }

.pain-coach {
  display: grid; gap: var(--s-1);
  padding: var(--s-4) var(--s-5);
  border-left: 2px solid var(--accent);
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.pain-coach p { margin: 0; }
#pain-say { font-family: var(--font-display); font-size: var(--fs-md); line-height: 1.3; letter-spacing: -0.005em; }
.pain-look { color: var(--ink-3); font-size: var(--fs-sm); }

.pain-frame-wrap {
  min-height: 64vh;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-2);
  box-shadow: var(--shadow);
}
.pain-frame-wrap iframe { width: 100%; height: 64vh; border: 0; display: block; background: #fff; }

.pain-nav { display: flex; justify-content: space-between; align-items: center; gap: var(--s-3); }
.pain-nav .btn { min-width: 150px; }
.pain-nav .btn:disabled { opacity: 0.4; cursor: default; transform: none; }
.pain-pos { color: var(--ink-3); }

.pain-done {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: var(--s-5);
}
.pain-done > p { margin: 0 0 var(--s-4); font-family: var(--font-display); font-size: var(--fs-md); }
.pain-more { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: var(--s-2); }
.pain-more-card {
  display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
  text-align: left; background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius); padding: var(--s-3) var(--s-4);
  transition: border-color 0.25s;
}
.pain-more-card:hover { border-color: var(--line-strong); }
.pain-more-card strong { font-weight: 500; color: var(--ink); font-size: var(--fs-sm); }
.pain-more-card span { font-size: var(--fs-xs); color: var(--ink-3); }

.pain-foot-note { margin-top: var(--s-7); }

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

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .walk-links { display: none; }
  .pain-grid { grid-template-columns: repeat(2, 1fr); }
  .walk-footer-grid { grid-template-columns: 1fr 1fr; }
  .walk-footer-cta { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .walk-nav { height: 60px; }
  .brand-text { font-size: 1.05rem; }
  .walk-cta { display: none; }
  .pain-grid { grid-template-columns: 1fr; }
  .pain-rail { top: 60px; }
  .pain-frame-wrap, .pain-frame-wrap iframe { min-height: 56vh; height: 56vh; }
  .pain-nav .btn { flex: 1; min-width: 0; }
  .pain-pos { display: none; }
  .walk-footer-grid { grid-template-columns: 1fr; }
  .walk-footer-base { flex-direction: column; gap: var(--s-2); }
}