/* ============================================================
   Components — reusable site UI: navbar, footer, buttons, form inputs.
   Loads after base.css. Shared by every page that uses these components.
   ============================================================ */

/* ── Navbar ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.navbar.scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-nav);
}
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: var(--font-weight-extrabold);
  font-size: 1.05rem;
  color: var(--color-text);
  letter-spacing: 0.3px;
  text-decoration: none;
}
.navbar__logo-mark {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  color: var(--color-primary); /* drives the tile fill via currentColor */
}
.navbar__links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.navbar__link {
  font-size: 0.9rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  transition: opacity 0.15s;
}
.navbar__link:hover { opacity: 0.75; }
.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 22px;
  font-size: 0.9rem;
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  text-decoration: none;
  display: inline-block;
}
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-primary:active { transform: scale(0.97); }

.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.navbar__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}
.navbar__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__hamburger.open span:nth-child(2) { opacity: 0; }
.navbar__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.navbar__mobile {
  display: none;
  flex-direction: column;
  gap: 16px;
  padding: 16px 20px 20px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}
.navbar__mobile.open { display: flex; }
.navbar__mobile .navbar__link {
  font-size: 1rem;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.navbar__mobile .btn-primary { text-align: center; }

@media (max-width: 640px) {
  .navbar__links { display: none; }
  .navbar__hamburger { display: flex; }
}

/* ── Email form ── */
.email-form {
  display: flex;
  gap: 8px;
  border-top: 1px solid var(--color-border);
  padding-top: 18px;
}
.email-input {
  flex: 1;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.9rem;
  color: var(--color-text);
  outline: none;
  transition: border-color 0.15s;
  min-width: 0;
  background: var(--color-surface);
}
.email-input:focus { border-color: var(--color-primary); }
.email-input::placeholder { color: var(--color-text-placeholder); }
.btn-notify {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  font-size: 0.875rem;
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s;
  flex-shrink: 0;
}
.btn-notify:hover { background: var(--color-primary-hover); }
.email-feedback {
  font-size: 0.8rem;
  color: var(--color-primary);
  margin-top: 10px;
  min-height: 18px;
  text-align: left;
  font-weight: var(--font-weight-medium);
}
.email-feedback.error { color: var(--color-danger); }

/* ── Footer ── */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 22px 20px;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}
.footer__brand {
  font-weight: var(--font-weight-extrabold);
  font-size: 0.95rem;
  color: var(--color-text);
}
.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}
.footer__links a {
  font-size: 0.82rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}
.footer__links a:hover { text-decoration: underline; }

/* ── Mobile small: footer half ── */
@media (max-width: 480px) {
  .footer__inner { flex-direction: column; align-items: flex-start; }
  .footer__links a {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
}