/* ============================================================
   Site chrome (header + footer) — visually identical to the
   home page chrome. Selectors scoped to .topbar-rw / .footer-rw
   so the rules don't bleed into Bootstrap-styled content.
   Tokens are namespaced with --frw-* to avoid colliding with
   home.css or edurobotics-bootstrap.css variables.
   ============================================================ */

.topbar-rw, .footer-rw {
  --frw-paper: #F5F3EE;
  --frw-ink: #0A0A0A;
  --frw-line: rgba(10, 10, 10, 0.14);
  --frw-mute: rgba(10, 10, 10, 0.55);
  --frw-red: #E4002B;
  --frw-font-display: 'Space Grotesk', system-ui, sans-serif;
  --frw-font-body: 'Inter', system-ui, sans-serif;
  --frw-font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

/* ====== TOPBAR ====== */
.topbar-rw {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--frw-paper) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--frw-line);
  font-family: var(--frw-font-body);
  color: var(--frw-ink);
}
.topbar-rw a { color: inherit; text-decoration: none; }
.topbar-rw .topbar-inner {
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 40px; padding: 14px 32px;
  max-width: 1480px; margin: 0 auto;
}
.topbar-rw .brand { display: flex; align-items: center; gap: 12px; }
.topbar-rw .brand-mark {
  width: 34px; height: 34px; position: relative;
  display: grid; place-items: center;
  background: var(--frw-ink); color: var(--frw-paper);
  font-family: var(--frw-font-mono); font-weight: 700; font-size: 13px;
}
.topbar-rw .brand-mark::after { content: ''; position: absolute; inset: -3px; border: 1px solid var(--frw-ink); pointer-events: none; }
.topbar-rw .brand-text { line-height: 1; }
.topbar-rw .brand-text .t1 { font-family: var(--frw-font-display); font-weight: 600; font-size: 15px; letter-spacing: -0.01em; color: var(--frw-ink); }
.topbar-rw .brand-text .t2 { font-family: var(--frw-font-mono); font-size: 10px; color: var(--frw-mute); letter-spacing: 0.12em; text-transform: uppercase; margin-top: 3px; }

.topbar-rw .nav-rw { display: flex; gap: 28px; justify-content: center; align-items: center; }
.topbar-rw .nav-rw a {
  font-family: var(--frw-font-mono); font-size: 12px;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--frw-ink); opacity: 0.7;
  transition: opacity .15s;
  padding: 4px 0;
  position: relative;
}
.topbar-rw .nav-rw a:hover { opacity: 1; }
.topbar-rw .nav-rw a.active { opacity: 1; }
.topbar-rw .nav-rw a.active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--frw-red);
}

.topbar-rw .top-actions { display: flex; align-items: center; gap: 12px; }
.topbar-rw .btn-rw {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 20px; font-family: var(--frw-font-mono); font-size: 12px;
  letter-spacing: 0.08em; text-transform: uppercase; font-weight: 600;
  border: 1px solid var(--frw-red); background: var(--frw-red); color: #fff;
  transition: transform .15s ease, box-shadow .15s;
}
.topbar-rw .btn-rw:hover { transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--frw-red); color: #fff; }
.topbar-rw .btn-rw .arrow { transition: transform .15s; }
.topbar-rw .btn-rw:hover .arrow { transform: translateX(3px); }

.topbar-rw .nav-toggle { display: none; background: transparent; border: 1px solid var(--frw-ink); padding: 8px 10px; cursor: pointer; font-family: var(--frw-font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; }

@media (max-width: 1100px) {
  .topbar-rw .nav-rw { display: none; }
  .topbar-rw .topbar-inner { grid-template-columns: auto auto; gap: 16px; padding: 12px 20px; }
  .topbar-rw .top-actions { gap: 8px; }
  .topbar-rw .btn-rw { padding: 10px 14px; font-size: 11px; }
  .topbar-rw .nav-toggle { display: inline-flex; align-items: center; gap: 6px; }
}

/* Mobile menu — collapse to a paper panel below the topbar */
.topbar-rw .mobile-menu { display: none; }
@media (max-width: 1100px) {
  .topbar-rw .mobile-menu.open {
    display: flex; flex-direction: column; gap: 0;
    border-top: 1px solid var(--frw-line);
    padding: 8px 20px 16px;
    background: var(--frw-paper);
  }
  .topbar-rw .mobile-menu a {
    padding: 12px 0; border-bottom: 1px solid var(--frw-line);
    font-family: var(--frw-font-mono); font-size: 12px;
    letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--frw-ink);
  }
  .topbar-rw .mobile-menu a:last-child { border-bottom: 0; }
}

/* ====== FOOTER ====== */
.footer-rw {
  background: var(--frw-paper);
  border-top: 1px solid var(--frw-line);
  padding: 60px 0 32px;
  color: var(--frw-ink);
  font-family: var(--frw-font-body);
  margin-top: auto;
}

.footer-rw a { color: inherit; text-decoration: none; transition: color .15s; }
.footer-rw a:hover { color: var(--frw-red); }

.footer-rw .container-rw {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 32px;
}

.footer-rw .foot-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--frw-line);
}

.footer-rw .foot-top h5 {
  font-family: var(--frw-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--frw-mute);
  margin: 0 0 14px;
  font-weight: 600;
}

.footer-rw .foot-top ul {
  list-style: none;
  display: grid;
  gap: 8px;
  font-size: 14px;
  padding: 0;
  margin: 0;
}

.footer-rw .foot-top p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--frw-mute);
  max-width: 44ch;
}

.footer-rw .foot-bot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-family: var(--frw-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--frw-mute);
}

.footer-rw .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.footer-rw .brand-mark {
  width: 34px;
  height: 34px;
  position: relative;
  display: grid;
  place-items: center;
  background: var(--frw-ink);
  color: var(--frw-paper);
  font-family: var(--frw-font-mono);
  font-weight: 700;
  font-size: 13px;
}

.footer-rw .brand-mark::after {
  content: '';
  position: absolute;
  inset: -3px;
  border: 1px solid var(--frw-ink);
  pointer-events: none;
}

.footer-rw .brand-text { line-height: 1; }

.footer-rw .brand-text .t1 {
  font-family: var(--frw-font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
}

.footer-rw .brand-text .t2 {
  font-family: var(--frw-font-mono);
  font-size: 10px;
  color: var(--frw-mute);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 3px;
}

@media (max-width: 1100px) {
  .footer-rw .foot-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .footer-rw .foot-top { grid-template-columns: 1fr; gap: 24px; }
  .footer-rw .foot-bot { flex-direction: column; gap: 12px; text-align: center; }
  .footer-rw .container-rw { padding: 0 20px; }
}