/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition-base);
  background: transparent;
}

.navbar--scrolled {
  background: rgba(5, 8, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
}

.navbar__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  padding: 0 var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
}

.navbar__brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--gradient-accent);
  color: var(--bg-deep);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  box-shadow: 0 0 20px var(--accent-glow);
}

.navbar__brand-accent {
  color: var(--accent-primary);
}

.navbar__links {
  display: flex;
  gap: 4px;
  margin-left: auto;
  margin-right: var(--space-md);
}

.navbar__link {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  position: relative;
}

.navbar__link:hover {
  color: var(--text-primary);
  background: var(--accent-soft);
}

.navbar__link--active {
  color: var(--accent-primary);
}

.navbar__link--active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--accent-primary);
  border-radius: 2px;
}

.navbar__cta {
  padding: 10px 22px;
  font-size: 0.85rem;
}

.navbar__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}

.navbar__burger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

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

/* ===== Mobile Menu ===== */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 320px;
  max-width: 85vw;
  height: 100vh;
  background: var(--bg-surface);
  border-left: 1px solid var(--border-default);
  z-index: 999;
  padding: calc(var(--header-height) + 32px) var(--space-md) var(--space-lg);
  transition: right var(--transition-slow);
  overflow-y: auto;
}

.mobile-menu--open {
  right: 0;
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mobile-menu__link {
  padding: 16px var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  animation: slideIn 0.4s both;
}

.mobile-menu__link:hover,
.mobile-menu__link--active {
  color: var(--accent-primary);
  background: var(--accent-soft);
}

.mobile-menu__cta {
  margin-top: var(--space-md);
}

.mobile-menu__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 998;
}

/* ===== Footer ===== */
.footer {
  position: relative;
  background: var(--bg-base);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-2xl) 0 var(--space-lg);
  overflow: hidden;
}

.footer__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: linear-gradient(to bottom, black, transparent);
  -webkit-mask-image: linear-gradient(to bottom, black, transparent);
  pointer-events: none;
}

.footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  position: relative;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
}

.footer__logo-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--gradient-accent);
  color: var(--bg-deep);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 700;
}

.footer__tagline {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 320px;
  margin-bottom: var(--space-md);
}

.footer__socials {
  display: flex;
  gap: var(--space-sm);
}

.footer__social {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.footer__social:hover {
  color: var(--accent-primary);
  background: var(--accent-soft);
  transform: translateY(-2px);
}

.footer__heading {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.footer__col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__col a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer__col a:hover {
  color: var(--accent-primary);
}

.footer__col .btn,
.footer__col .btn-primary,
.footer .btn-primary,
.footer .btn-warm,
.footer .btn-secondary {
  color: var(--bg-deep) !important;
  font-size: 0.85rem;
}
.footer .btn-secondary {
  color: var(--text-primary) !important;
}
.footer .btn-secondary:hover {
  color: var(--accent-primary) !important;
}
.footer .btn-warm {
  color: #fff !important;
}

.footer__col--cta p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
  line-height: 1.6;
}

.footer__btn {
  padding: 10px 22px;
  font-size: 0.85rem;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== Reveal on scroll ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--transition-slow), transform 0.8s var(--transition-slow);
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Page hero (interior pages) ===== */
.page-hero {
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-2xl);
  position: relative;
  overflow: hidden;
}

.page-hero__bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  pointer-events: none;
}

.page-hero__content {
  position: relative;
  max-width: 760px;
}

.page-hero__title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  margin-bottom: var(--space-md);
}

.page-hero__subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
}

/* ===== Image placeholder ===== */
.img-placeholder {
  position: relative;
  background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--bg-surface) 100%);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  overflow: hidden;
}

.img-placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 20px,
    rgba(0, 212, 255, 0.02) 20px,
    rgba(0, 212, 255, 0.02) 40px
  );
}

/* ===== Responsive ===== */
@media (max-width: 980px) {
  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .navbar__links,
  .navbar__cta {
    display: none;
  }
  .navbar__burger {
    display: flex;
  }
  .footer__top {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  .footer__bottom {
    flex-direction: column;
    gap: var(--space-xs);
    text-align: center;
  }
}