/* ============================================
   Layout — Shell, Sidebar, Topbar, BottomNav
   ============================================ */

/* App shell */
.app {
  display: grid;
  min-height: 100vh;
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .app {
    grid-template-columns: var(--sidebar-w) 1fr;
    grid-template-rows: var(--topbar-h) 1fr;
    grid-template-areas:
      "sidebar topbar"
      "sidebar main";
  }
  .app .sidebar {
    grid-area: sidebar;
  }
  .app .topbar {
    grid-area: topbar;
  }
  .app .main {
    grid-area: main;
  }
}

/* ---- Topbar ---- */
.topbar {
  background: var(--nfr-bg-1);
  border-bottom: 1px solid var(--nfr-line);
  display: flex;
  align-items: center;
  gap: var(--nfr-s-4);
  padding: 0 var(--nfr-s-4);
  height: var(--topbar-h);
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-logo {
  width: 64px;
  flex-shrink: 0;
}
.topbar-logo svg,
.topbar-logo img {
  width: 100%;
  height: auto;
  display: block;
}
.topbar-tag {
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--nfr-fg-2);
  text-transform: uppercase;
  margin-top: 2px;
}
.topbar-client {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.topbar-client-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--nfr-fg-2);
}
.topbar-client-name {
  font-size: var(--t-sm);
  color: var(--nfr-fg-0);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar-total {
  font-family: var(--font-mono);
  font-size: var(--t-sm);
  color: var(--nfr-gold);
  white-space: nowrap;
}
.topbar-actions {
  display: flex;
  gap: var(--nfr-s-2);
  align-items: center;
}

/* ---- Sidebar (desktop only) ---- */
.sidebar {
  display: none;
  background: var(--nfr-bg-1);
  border-right: 1px solid var(--nfr-line);
  flex-direction: column;
  padding: var(--nfr-s-5);
  gap: var(--nfr-s-2);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
@media (min-width: 768px) {
  .sidebar {
    display: flex;
  }
}
.sidebar-brand {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--nfr-s-5);
}
.sidebar-brand svg,
.sidebar-brand img {
  width: 86px;
  height: auto;
  display: block;
}
.sidebar-brand .topbar-tag {
  margin-top: var(--nfr-s-2);
}
.sidebar-section-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--nfr-fg-mute);
  margin: var(--nfr-s-4) var(--nfr-s-2) var(--nfr-s-2);
  font-weight: 600;
}
.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--nfr-s-3);
  padding: var(--nfr-s-3) var(--nfr-s-3);
  border-radius: var(--nfr-r-md);
  color: var(--nfr-fg-1);
  font-size: var(--t-sm);
  font-weight: 500;
  cursor: pointer;
  transition:
    background-color 140ms,
    color 140ms;
  position: relative;
  text-decoration: none;
}
.sidebar-link:hover {
  background: var(--nfr-bg-2);
  color: var(--nfr-fg-0);
}
.sidebar-link.is-active {
  background: rgba(201, 162, 75, 0.08);
  color: var(--nfr-gold-hi);
}
.sidebar-link.is-active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 18px;
  background: var(--nfr-gold);
  border-radius: 0 2px 2px 0;
}
.sidebar-link .icon {
  width: 18px;
  height: 18px;
  color: var(--nfr-fg-2);
  flex-shrink: 0;
}
.sidebar-link.is-active .icon {
  color: var(--nfr-gold);
}
.sidebar-link .qty-badge {
  margin-left: auto;
  background: var(--nfr-gold);
  color: var(--nfr-bg-0);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 999px;
  letter-spacing: 0;
}
.sidebar-spacer {
  flex: 1;
}
.sidebar-divider {
  height: 1px;
  background: var(--nfr-line);
  margin: var(--nfr-s-3) 0;
}
.sidebar-user {
  display: flex;
  flex-direction: column;
  padding: var(--nfr-s-3);
  background: var(--nfr-bg-2);
  border-radius: var(--nfr-r-md);
  gap: 2px;
}
.sidebar-user-name {
  font-size: var(--t-sm);
  color: var(--nfr-fg-0);
  font-weight: 600;
}
.sidebar-user-filial {
  font-size: var(--t-xs);
  color: var(--nfr-fg-2);
}
.sidebar-logout {
  margin-top: var(--nfr-s-2);
  font-size: var(--t-xs);
  color: var(--nfr-fg-2);
  text-align: left;
  padding: 4px 0;
}
.sidebar-logout:hover {
  color: var(--nfr-danger);
}

/* ---- Bottom nav (mobile only) ---- */
.bottom-nav {
  display: flex;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--bottomnav-h);
  background: var(--nfr-bg-1);
  border-top: 1px solid var(--nfr-line);
  z-index: 50;
  padding-bottom: env(safe-area-inset-bottom, 0);
}
@media (min-width: 768px) {
  .bottom-nav {
    display: none;
  }
}
.bottom-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  color: var(--nfr-fg-2);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  position: relative;
}
.bottom-nav-item .icon {
  width: 22px;
  height: 22px;
}
.bottom-nav-item.is-active {
  color: var(--nfr-gold);
}
.bottom-nav-item .qty-badge {
  position: absolute;
  top: 4px;
  right: calc(50% - 18px);
  background: var(--nfr-gold);
  color: var(--nfr-bg-0);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 999px;
  min-width: 16px;
  text-align: center;
}

/* ---- Main content area ---- */
.main {
  padding: var(--nfr-s-5) var(--nfr-s-4) calc(var(--bottomnav-h) + var(--nfr-s-6));
  max-width: 100%;
  overflow-x: hidden;
}
@media (min-width: 768px) {
  .main {
    padding: var(--nfr-s-8) var(--nfr-s-8) var(--nfr-s-10);
  }
}
@media (min-width: 1280px) {
  .main {
    padding: var(--nfr-s-10) var(--nfr-s-12) var(--nfr-s-12);
  }
}

.main-wrap {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--nfr-s-5);
}

/* Page header */
.page-header {
  display: flex;
  flex-direction: column;
  gap: var(--nfr-s-2);
  margin-bottom: var(--nfr-s-3);
}
.page-header h1 {
  font-size: var(--t-2xl);
}
@media (min-width: 768px) {
  .page-header h1 {
    font-size: var(--t-3xl);
  }
}
.page-header .sub {
  color: var(--nfr-fg-2);
  font-size: var(--t-sm);
}

/* Grid helpers */
.grid-2 {
  display: grid;
  gap: var(--nfr-s-4);
  grid-template-columns: 1fr;
}
.grid-3 {
  display: grid;
  gap: var(--nfr-s-4);
  grid-template-columns: 1fr;
}
.grid-4 {
  display: grid;
  gap: var(--nfr-s-4);
  grid-template-columns: 1fr 1fr;
}
@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
  .grid-3 {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}
@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: 2fr 1fr;
  }
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--nfr-s-4);
}
.stack-sm {
  display: flex;
  flex-direction: column;
  gap: var(--nfr-s-2);
}
.row {
  display: flex;
  gap: var(--nfr-s-3);
  align-items: center;
  flex-wrap: wrap;
}
.row-between {
  display: flex;
  gap: var(--nfr-s-3);
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

/* Sticky CTA (mobile) */
.sticky-cta {
  position: sticky;
  bottom: calc(var(--bottomnav-h) + 0px);
  background: linear-gradient(to top, var(--nfr-bg-0) 60%, rgba(11, 11, 13, 0));
  padding: var(--nfr-s-4) 0;
  z-index: 40;
  margin-top: auto;
}
@media (min-width: 768px) {
  .sticky-cta {
    position: static;
    background: none;
    padding: 0;
  }
}

/* Catalog grid */
.catalog-grid {
  display: grid;
  gap: var(--nfr-s-3);
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 640px) {
  .catalog-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--nfr-s-4);
  }
}
@media (min-width: 1024px) {
  .catalog-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Login layout */
.login-page {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .login-page {
    grid-template-columns: 1fr 1fr;
  }
}
.login-hero {
  display: none;
  background:
    radial-gradient(circle at 30% 20%, rgba(201, 162, 75, 0.18), transparent 50%),
    linear-gradient(180deg, #1a1108 0%, #0c0805 100%);
  position: relative;
  overflow: hidden;
  padding: var(--nfr-s-10);
  flex-direction: column;
  justify-content: space-between;
  color: var(--nfr-fg-0);
}
.login-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='40' height='40' viewBox='0 0 40 40'><path d='M0 20 L20 0 L40 20 L20 40 Z' stroke='%23C9A24B' stroke-opacity='0.04' fill='none'/></svg>");
  opacity: 0.8;
}
@media (min-width: 900px) {
  .login-hero {
    display: flex;
  }
}
.login-form {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--nfr-s-8) var(--nfr-s-5);
  max-width: 480px;
  width: 100%;
  margin: 0 auto;
}
.login-hero h2 {
  font-size: var(--t-3xl);
  line-height: 1.15;
  font-weight: 500;
  color: var(--nfr-fg-0);
  max-width: 380px;
  position: relative;
}
.login-hero .hero-tag {
  font-size: var(--t-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--nfr-gold);
  margin-bottom: var(--nfr-s-3);
  position: relative;
}
.login-hero .hero-meta {
  font-size: var(--t-sm);
  color: var(--nfr-fg-2);
  position: relative;
}

/* Product detail layout */
.product-detail {
  display: grid;
  gap: var(--nfr-s-5);
  grid-template-columns: 1fr;
}
@media (min-width: 900px) {
  .product-detail {
    grid-template-columns: 1.2fr 1fr;
  }
}
.product-hero-img {
  aspect-ratio: 4 / 5;
  border-radius: var(--nfr-r-lg);
  border: 1px solid var(--nfr-line);
  overflow: hidden;
  background: linear-gradient(135deg, #3a2820 0%, #2a1c14 50%, #1a110a 100%);
  display: grid;
  place-items: center;
  position: relative;
}
.product-hero-img::after {
  content: "NFR";
  font-family: var(--font-display);
  font-size: 96px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: rgba(201, 162, 75, 0.16);
}
.product-thumbs {
  display: flex;
  gap: var(--nfr-s-2);
  margin-top: var(--nfr-s-3);
}
.product-thumb {
  width: 72px;
  height: 72px;
  border-radius: var(--nfr-r-sm);
  border: 1px solid var(--nfr-line);
  cursor: pointer;
}
.product-thumb.is-active {
  border-color: var(--nfr-gold);
}

/* Cart layout */
.cart-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--nfr-s-5);
}
@media (min-width: 1024px) {
  .cart-layout {
    grid-template-columns: 1.5fr 1fr;
    align-items: start;
  }
}
.cart-summary {
  position: sticky;
  top: calc(var(--topbar-h) + 16px);
}
.cart-item {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: var(--nfr-s-3);
  padding: var(--nfr-s-4);
  border: 1px solid var(--nfr-line);
  border-radius: var(--nfr-r-md);
  background: var(--nfr-bg-1);
  align-items: center;
}
.cart-item-img {
  width: 64px;
  height: 80px;
  border-radius: var(--nfr-r-sm);
  background: linear-gradient(135deg, #2a1f15, #1b1410);
  flex-shrink: 0;
}
.cart-variant-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: var(--nfr-s-3);
  align-items: center;
  padding: var(--nfr-s-2) 0;
  border-top: 1px solid var(--nfr-bg-3);
  font-size: var(--t-sm);
}
.cart-variant-row:first-child {
  border-top: 0;
}
.cart-variant-qty {
  width: 56px;
  height: 32px;
  background: var(--nfr-bg-2);
  border: 1px solid var(--nfr-bg-3);
  border-radius: var(--nfr-r-sm);
  text-align: center;
  font-family: var(--font-mono);
  color: var(--nfr-fg-0);
}