/* ============================================================
   Aura Cycles — static info pages (How it works / About / Contact)
   ============================================================ */

.page-wrap { max-width: 860px; margin: 0 auto; padding: 64px 24px 80px; }
.page-wrap.narrow { max-width: 680px; }

.page-kicker { font-size: 11px; letter-spacing: 3px; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.page-title { font-family: var(--serif); font-size: clamp(34px, 6vw, 52px); font-weight: 400; color: var(--cream); line-height: 1.1; margin: 0 0 18px; }
.page-title em { font-style: italic; color: var(--accent); }
.page-lede { color: var(--muted); font-size: 17px; line-height: 1.75; margin: 0 0 40px; }
.page-lede strong { color: var(--ink); }

.page-h2 { font-family: var(--serif); font-size: 26px; font-weight: 600; color: var(--ink); margin: 48px 0 14px; }
.page-h2:first-of-type { margin-top: 0; }

/* ---- formula cards ---- */
.formula-stack { display: flex; flex-direction: column; gap: 14px; }
.formula {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 14px; padding: 18px 20px;
}
.formula-step {
  display: inline-block; font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--accent); margin-bottom: 8px; font-weight: 600;
}
.formula-step a { color: var(--accent-3); }
.formula-desc a, .peri-src-line a, .peri-src a { color: var(--accent-3); }
.formula-math {
  font-family: var(--serif); font-size: 21px; color: var(--ink);
  line-height: 1.5; letter-spacing: 0.2px; overflow-wrap: anywhere;
}
.formula-math .op { color: var(--accent); }
.formula-math sub, .formula-math sup { font-size: 0.62em; color: var(--muted); }
.formula-desc { margin-top: 8px; font-size: 14px; color: var(--muted); line-height: 1.6; }
.formula-desc code { color: var(--ink); background: rgba(15,26,43,0.6); padding: 1px 6px; border-radius: 5px; font-size: 12.5px; }

/* piecewise / cases block */
.piecewise { font-family: var(--serif); font-size: 17px; color: var(--ink); line-height: 1.9; }
.piecewise .row { display: flex; gap: 10px; align-items: baseline; }
.piecewise .cond { color: var(--muted); font-size: 14px; white-space: nowrap; }
.piecewise .name { color: var(--accent); }
.piecewise .brace { font-size: 34px; color: var(--muted-2); line-height: 1; padding-right: 4px; align-self: center; }

/* ---- sources ---- */
.source-list { list-style: none; margin: 0; padding: 0; counter-reset: src; }
.source-list li {
  counter-increment: src; position: relative;
  padding: 16px 16px 16px 52px; border-bottom: 1px solid var(--line-soft);
  font-size: 14px; color: var(--muted); line-height: 1.6;
}
.source-list li::before {
  content: counter(src); position: absolute; left: 12px; top: 16px;
  width: 24px; height: 24px; border-radius: 50%;
  background: rgba(197,111,79,0.14); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700;
}
.source-list li:last-child { border-bottom: none; }
.source-list .src-title { color: var(--ink); font-weight: 600; }
.source-list .src-journal { color: var(--muted-2); }
.source-list a { color: var(--accent-3); word-break: break-all; }

/* ---- about bio ---- */
.bio-section { margin-bottom: 28px; }
.bio-section p { color: var(--muted); font-size: 16px; line-height: 1.8; margin: 0 0 14px; }
.bio-section p strong { color: var(--ink); }
.bio-name { font-family: var(--serif); font-size: 30px; font-weight: 600; color: var(--cream); margin: 0 0 4px; }
.bio-role { color: var(--accent); font-size: 13px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 24px; }
.privacy-pill { display: flex; gap: 12px; flex-wrap: wrap; margin: 20px 0; }
.privacy-pill span {
  background: rgba(46,127,161,0.12); border: 1px solid rgba(46,127,161,0.24);
  color: var(--ink); border-radius: 999px; padding: 7px 16px; font-size: 13px;
}
.privacy-pill span .lock { color: var(--accent-3); margin-right: 4px; }

/* ---- contact ---- */
.contact-card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 26px 24px; }
.contact-card .field { display: block; margin-bottom: 16px; }
.contact-card .field span { display: block; font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.6px; margin-bottom: 7px; }
.contact-card input, .contact-card textarea {
  width: 100%; padding: 12px 14px; font-size: 15px;
  border: 1px solid var(--line-soft); border-radius: 11px;
  background: rgba(15,26,43,0.5); color: var(--ink); font-family: var(--sans);
}
.contact-card textarea { resize: vertical; min-height: 130px; }
.contact-card input:focus, .contact-card textarea:focus { outline: 1.5px solid var(--accent); }
.contact-note { font-size: 12.5px; color: var(--muted-2); margin-top: 6px; line-height: 1.5; }
.contact-direct { margin-top: 20px; font-size: 14px; color: var(--muted); }
.contact-direct a { color: var(--accent-3); }

/* ---- social links ---- */
.social-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 22px; }
.social-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 12px; font-size: 14px; font-weight: 600;
  text-decoration: none; border: 1px solid var(--line);
  background: rgba(15,26,43,0.5); color: var(--ink); transition: all 0.15s;
}
.social-btn:hover { border-color: var(--accent); }
.social-btn .s-ico { font-size: 17px; }

@media (max-width: 640px) {
  .page-wrap { padding: 40px 18px 60px; }
  .formula-math { font-size: 18px; }
  .piecewise .cond { white-space: normal; }
}