/* ================================
   Navigation
   ================================ */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.nav--scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  z-index: 101;
}

.nav__logo svg {
  height: 32px;
  width: auto;
}

.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-lg);
}

.nav__link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  transition: color var(--duration-fast) var(--ease-out);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--duration-normal) var(--ease-out);
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--color-text);
}

.nav__link:hover::after,
.nav__link:focus-visible::after {
  width: 100%;
}

.nav__cta {
  display: none;
}

/* Hamburger */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  z-index: 101;
  cursor: pointer;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--duration-normal) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out);
}

.nav__hamburger--active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger--active span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger--active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu Overlay */
.nav__menu {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
}

.nav__menu--open {
  transform: translateX(0);
}

.nav__menu .nav__link {
  font-size: 1.5rem;
  color: var(--color-text);
}

.nav__menu .nav__cta {
  display: inline-flex;
}

/* Desktop Navigation */
@media (min-width: 768px) {
  .nav__hamburger {
    display: none;
  }

  .nav__links {
    display: flex;
  }

  .nav__cta {
    display: inline-flex;
  }

  .nav__menu {
    display: none;
  }
}

/* ================================
   Buttons
   ================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: var(--glow-sm);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  box-shadow: var(--glow-md);
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: var(--color-accent-dim);
  box-shadow: var(--glow-sm);
  transform: translateY(-2px);
}

.btn-store {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.25rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  color: var(--color-text);
  transition: all var(--duration-normal) var(--ease-out);
}

.btn-store:hover,
.btn-store:focus-visible {
  border-color: var(--color-accent);
  box-shadow: var(--glow-sm);
  transform: translateY(-2px);
}

.btn-store__icon {
  width: 24px;
  height: 24px;
}

.btn-store__text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.2;
}

.btn-store__label {
  font-size: 0.65rem;
  color: var(--color-text-muted);
}

.btn-store__name {
  font-size: 0.95rem;
  font-weight: 600;
}

/* ================================
   Cards
   ================================ */

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: var(--space-lg);
  transition: all var(--duration-normal) var(--ease-out);
}

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

.card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.card__description {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ================================
   Footer
   ================================ */

.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
  text-align: center;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.footer__copy {
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

.footer__links {
  display: flex;
  gap: var(--space-lg);
}

.footer__link {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer__link:hover,
.footer__link:focus-visible {
  color: var(--color-accent);
}