/* ============================================
   LAYOUT - Navbar, Footer, Grid Systems
   ============================================ */

/* NAVBAR */
.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-index-sticky);
  background: rgba(9, 7, 18, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  padding: calc(var(--spacing-md) + 0.25rem) 0;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.16);
}

.navbar-container {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  gap: var(--spacing-lg);
}

.navbar-left,
.navbar-center,
.navbar-right {
  display: flex;
  align-items: center;
}

.navbar-right {
  gap: var(--spacing-lg);
  justify-content: flex-end;
}

.navbar-center {
  justify-content: center;
}

.navbar-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.navbar-brand .brand-logo {
  display: block;
  width: clamp(80px, 10vw, 120px);
  height: auto;
  object-fit: contain;
}

.desktop-nav {
  display: flex;
  gap: var(--spacing-xl);
  list-style: none;
  align-items: center;
}

.desktop-nav li {
  position: relative;
}

.navbar-toggle {
    display: none;
  background: var(--color-text);
  color: var(--color-background);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.15rem;
  place-items: center;
  box-shadow: var(--shadow-sm);
  position: relative;
  white-space: nowrap;
}

.desktop-nav a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.desktop-nav a:hover::after,
.desktop-nav a.active::after {
  width: 100%;
}

.cart-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  background: var(--color-error);
  color: white;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xxs);
  padding: 0 4px;
  margin-left: 6px;
}

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  padding: var(--spacing-lg);
  background: rgba(9, 7, 18, 0.96);
  backdrop-filter: blur(16px);
  z-index: calc(var(--z-index-sticky) + 2);
  overflow-y: auto;
}

.mobile-menu.open {
  display: block;
}

.mobile-menu-panel {
  max-width: 420px;
  margin: 0 auto;
  background: rgba(15, 13, 26, 0.96);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.35);
}

.mobile-menu-close {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text);
  font-size: 1rem;
  cursor: pointer;
}

.mobile-nav {
  list-style: none;
  display: grid;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.mobile-nav a {
  display: block;
  padding: var(--spacing-md) 0;
  color: var(--color-text);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

@media (max-width: 980px) {
  .desktop-nav,
  .navbar-right {
    display: none;
  }

  .navbar-toggle {
    display: grid;
  }
}

@media (max-width: 680px) {
  .navbar-container {
    padding: 0 var(--spacing-md);
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
  }

  .navbar-brand {
    max-width: 180px;
    font-size: var(--font-size-sm);
    line-height: 1.1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .navbar-brand .brand-logo {
    width: 100px;
  }

  .navbar-toggle {
    width: 44px;
    height: 44px;
  }

  .mobile-menu {
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    padding-top: calc(var(--spacing-3xl) + 20px);
  }

  .featured-section,
  #featured-products {
    display: none !important;
  }
}

.navbar-nav a.cart-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  position: relative;
}

.navbar-nav .cart-count {
  display: none;
  background-color: var(--color-error);
  color: white;
  border-radius: var(--radius-full);
  width: 20px;
  height: 20px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  display: flex !important;
  align-items: center;
  justify-content: center;
  position: absolute;
  top: -8px;
  right: -8px;
}

.navbar-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.navbar-nav a:hover::after {
  width: 100%;
}

.navbar-nav a.active::after {
  width: 100%;
}

/* FOOTER */
footer {
  background-color: rgba(10, 8, 18, 0.98);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  margin-top: auto;
}

@media (max-width: 480px) {
  footer {
    padding: 1rem 0 0.75rem;
  }
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
  margin-bottom: var(--spacing-md);
}

.footer-section ul {
  list-style: none;
  margin-left: 0;
}

.footer-section li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

.footer-section a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

/* GRID LAYOUTS */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .navbar-container {
    padding: 0 var(--spacing-md);
  }

  .navbar-brand {
    font-size: var(--font-size-lg);
  }

  .mobile-menu {
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    padding-top: calc(var(--spacing-3xl) + 20px);
  }
}

/* FLEX LAYOUTS */
.flex {
  display: flex;
  gap: var(--spacing-lg);
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-col {
  flex-direction: column;
}

/* CARDS */
.card {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  color: var(--color-primary);
  transition: box-shadow var(--transition-base),
    transform var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
  border: 1px solid rgba(0, 0, 0, 0.12);
}

.card-title {
  margin: var(--spacing-md) 0;
  font-size: var(--font-size-lg);
  color: var(--color-primary);
}

.card-price {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin: var(--spacing-md) 0;
}

.card-description {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.card-footer {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

/* FORM GROUP */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* MODAL */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-index-modal-backdrop);
  justify-content: center;
  align-items: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background-color: var(--color-background);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  z-index: var(--z-index-modal);
  position: relative;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
}

.modal-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  cursor: pointer;
  color: var(--color-text-light);
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal-close:hover {
  color: var(--color-text);
}

.modal-body {
  margin-bottom: var(--spacing-lg);
}

.modal-footer {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}