/* ── Prototype Banner ── */
.prototype-banner {
  position: sticky;
  top: 0;
  z-index: 1001;
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 400;
  text-align: center;
  padding: 7px 16px;
  line-height: 1.4;
}

/* ── Header ── */
.header {
  position: sticky;
  top: 32px; /* overridden by JS to exact banner height */
  z-index: 1000;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease;
}

.header.scrolled {
  box-shadow: 0 2px 16px rgba(0,0,0,0.13);
}

/* ── Nav ── */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}

.nav__logo {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  flex-shrink: 0;
}

.nav__logo-main {
  font-family: 'DM Serif Display', serif;
  font-size: 26px;
  color: var(--color-accent);
  letter-spacing: -0.5px;
}

.nav__logo-sub {
  font-family: 'DM Sans', sans-serif;
  font-size: 11px;
  color: var(--color-primary);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.nav__list {
  display: none;
}

.nav__link {
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-dark);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  transition: color var(--ease), background var(--ease);
  white-space: nowrap;
}

.nav__link:hover { color: var(--color-primary); }

.nav__link.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* ── Hamburger ── */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  padding: 7px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--ease);
  position: relative;
  z-index: 1002;
}

.nav__hamburger:hover { background: var(--color-light); }

.nav__hamburger span {
  display: block;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease, background 0.25s ease;
}

.nav__hamburger.open span               { background: var(--color-white); }
.nav__hamburger.open span:nth-child(1)  { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2)  { opacity: 0; }
.nav__hamburger.open span:nth-child(3)  { transform: translateY(-7px) rotate(-45deg); }

/* Mobile overlay */
.nav__list.is-open {
  display: flex;
  position: fixed;
  inset: 0;
  background: var(--color-accent);
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 8px;
  z-index: 1001;
}

.nav__list.is-open .nav__link {
  color: rgba(255,255,255,0.85);
  font-size: 1.25rem;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
}

.nav__list.is-open .nav__link:hover,
.nav__list.is-open .nav__link.active {
  color: var(--color-white);
  background: rgba(255,255,255,0.09);
}

/* Desktop nav */
@media (min-width: 768px) {
  .nav__hamburger { display: none; }
  .nav__list {
    display: flex;
    align-items: center;
    gap: 2px;
  }
}

/* ── Buttons ── */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  text-align: center;
  line-height: 1;
  transition: background var(--ease), color var(--ease), border-color var(--ease),
              transform var(--ease), box-shadow var(--ease);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(12,87,166,0.28);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--full { width: 100%; }

/* ── Cards ── */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: border-color var(--ease), transform var(--ease), box-shadow var(--ease);
}

.card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card__icon {
  font-size: 2rem;
  margin-bottom: 16px;
  line-height: 1;
}

.card__title {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--color-dark);
  margin-bottom: 10px;
}

.card__text {
  font-size: 0.93rem;
  color: var(--color-mid);
  line-height: 1.65;
}

/* ── Badges ── */
.about__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.badge {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 50px;
  white-space: nowrap;
}

/* ── Footer ── */
.footer {
  background: var(--color-accent);
  color: var(--color-white);
  padding-block: 32px;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer__brand {
  color: var(--color-white);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  margin-bottom: 4px;
}

.footer__copy {
  color: rgba(255,255,255,0.6);
  font-size: 0.875rem;
}

.footer__right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer__link {
  color: rgba(255,255,255,0.65);
  font-size: 0.875rem;
  transition: color var(--ease);
}

.footer__link:hover { color: var(--color-white); }

.footer__divider {
  color: rgba(255,255,255,0.3);
  font-size: 0.875rem;
}

@media (min-width: 640px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}