/* =====================================================================
   Persian Shop :: Design System
   RTL-first, mobile-first, token-driven. Every page uses these tokens.
   No external CSS framework: full control over CLS and payload size.
   ===================================================================== */

/* ---------- Fonts -------------------------------------------------- */
/* Place Vazirmatn woff2 files in assets/fonts/. Falls back gracefully. */
@font-face {
  font-family: 'Vazirmatn';
  src: url('../fonts/Vazirmatn-Regular.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'Vazirmatn';
  src: url('../fonts/Vazirmatn-Medium.woff2') format('woff2');
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: 'Vazirmatn';
  src: url('../fonts/Vazirmatn-Bold.woff2') format('woff2');
  font-weight: 700;
  font-display: swap;
}

/* ---------- Tokens ------------------------------------------------- */
:root {
  /* Color: one brand hue, neutral scale, semantic set */
  --c-brand-50:  #eef4ff;
  --c-brand-100: #dbe6ff;
  --c-brand-200: #bcd0ff;
  --c-brand-400: #6c93ff;
  --c-brand-500: #3b6cf5;
  --c-brand-600: #2a55d8;
  --c-brand-700: #1f42ad;

  --c-ink-900: #10131a;
  --c-ink-800: #1c2230;
  --c-ink-700: #2c3448;
  --c-ink-500: #5a6478;
  --c-ink-400: #5b6472;
  --c-ink-300: #a8b0c0;
  --c-ink-200: #d9dee7;
  --c-ink-100: #eceff4;
  --c-ink-50:  #f6f8fb;
  --c-white:   #ffffff;

  --c-success-50: #e9f9f0;
  --c-success-500: #12a05c;
  --c-warning-50: #fff6e6;
  --c-warning-500: #d98800;
  --c-danger-50: #fdecec;
  --c-danger-500: #d63535;
  --c-danger-600: #b32626;

  /* Typography scale */
  --font-sans: 'Vazirmatn', 'IRANSans', Tahoma, system-ui, -apple-system, sans-serif;
  --fs-xs: 0.75rem;
  --fs-sm: 0.8125rem;
  --fs-md: 0.875rem;
  --fs-base: 0.9375rem;
  --fs-lg: 1.0625rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 1.875rem;
  --lh-tight: 1.35;
  --lh-normal: 1.7;

  /* Spacing: 4px base */
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px;
  --sp-5: 20px; --sp-6: 24px; --sp-8: 32px; --sp-10: 40px;
  --sp-12: 48px; --sp-16: 64px;

  /* Radius */
  --r-sm: 6px; --r-md: 10px; --r-lg: 14px; --r-xl: 20px; --r-full: 999px;

  /* Shadows: subtle only */
  --sh-xs: 0 1px 2px rgba(16, 19, 26, 0.04);
  --sh-sm: 0 2px 6px rgba(16, 19, 26, 0.06);
  --sh-md: 0 6px 18px rgba(16, 19, 26, 0.08);
  --sh-lg: 0 16px 40px rgba(16, 19, 26, 0.12);

  /* Layout */
  --container: 1360px;
  --header-h: 62px;
  --z-header: 100;
  --z-drawer: 200;
  --z-modal: 300;
  --z-toast: 400;

  --transition: 160ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset -------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--c-ink-800);
  background: var(--c-ink-50);
  overflow-x: hidden; /* never allow horizontal scroll */
}

img, picture, video, svg { max-width: 100%; display: block; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0; line-height: var(--lh-tight); font-weight: 700; }
p { margin: 0 0 var(--sp-3); }
table { border-collapse: collapse; width: 100%; }

/* Visible focus for keyboard users only */
:focus-visible {
  outline: 2px solid var(--c-brand-500);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap;
}

.skip-link {
  position: absolute; inset-inline-start: 50%; top: -60px;
  transform: translateX(50%);
  background: var(--c-ink-900); color: var(--c-white);
  padding: var(--sp-2) var(--sp-4); border-radius: 0 0 var(--r-md) var(--r-md);
  z-index: 500; transition: top var(--transition);
}
.skip-link:focus { top: 0; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* ---------- Layout ------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--sp-4);
}

.stack > * + * { margin-top: var(--sp-4); }
.row { display: flex; align-items: center; gap: var(--sp-3); }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); }
.grow { flex: 1 1 auto; min-width: 0; }
.muted { color: var(--c-ink-500); }
.text-sm { font-size: var(--fs-sm); }
.text-xs { font-size: var(--fs-xs); }
.nowrap { white-space: nowrap; }

.section { margin-block: var(--sp-8); }
.section__head {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--sp-3); margin-bottom: var(--sp-4);
}
.section__title { font-size: var(--fs-xl); }
.section__link { color: var(--c-brand-600); font-size: var(--fs-md); font-weight: 500; }

/* ---------- Card --------------------------------------------------- */
.card {
  background: var(--c-white);
  border: 1px solid var(--c-ink-100);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-xs);
}
.card--pad { padding: var(--sp-5); }
.card__head {
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--c-ink-100);
  font-weight: 700;
}
.card__body { padding: var(--sp-5); }

/* ---------- Buttons ----------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  min-height: 44px; /* touch target */
  padding: 0 var(--sp-5);
  border: 1px solid transparent;
  border-radius: var(--r-md);
  font-size: var(--fs-md); font-weight: 500;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
  user-select: none;
}
.btn:active { transform: translateY(1px); }
.btn[disabled], .btn.is-loading { opacity: 0.65; pointer-events: none; }

.btn--primary { background: var(--c-brand-500); color: var(--c-white); }
.btn--primary:hover { background: var(--c-brand-600); }
.btn--ghost { background: var(--c-white); border-color: var(--c-ink-200); color: var(--c-ink-700); }
.btn--ghost:hover { border-color: var(--c-brand-400); color: var(--c-brand-600); }
.btn--soft { background: var(--c-brand-50); color: var(--c-brand-700); }
.btn--danger { background: var(--c-danger-500); color: var(--c-white); }
.btn--danger:hover { background: var(--c-danger-600); }
.btn--quiet { background: transparent; color: var(--c-ink-500); padding-inline: var(--sp-2); }
.btn--quiet:hover { color: var(--c-danger-500); }
.btn--block { width: 100%; }
.btn--sm { min-height: 36px; padding: 0 var(--sp-3); font-size: var(--fs-sm); }
.btn--lg { min-height: 52px; font-size: var(--fs-lg); font-weight: 700; }

/* Inline spinner for loading states */
.btn.is-loading::before {
  content: ''; width: 16px; height: 16px;
  border: 2px solid currentColor; border-top-color: transparent;
  border-radius: 50%; animation: spin 700ms linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: var(--r-md);
  background: var(--c-white); border: 1px solid var(--c-ink-200);
  transition: all var(--transition);
}
.icon-btn:hover { border-color: var(--c-brand-400); color: var(--c-brand-600); }
.icon-btn.is-active { background: var(--c-danger-50); border-color: var(--c-danger-500); color: var(--c-danger-500); }

/* ---------- Badges ------------------------------------------------ */
.badge {
  display: inline-flex; align-items: center; gap: var(--sp-1);
  padding: 2px var(--sp-2); border-radius: var(--r-full);
  font-size: var(--fs-xs); font-weight: 500;
}
.badge--success { background: var(--c-success-50); color: var(--c-success-500); }
.badge--warning { background: var(--c-warning-50); color: var(--c-warning-500); }
.badge--danger  { background: var(--c-danger-50); color: var(--c-danger-500); }
.badge--brand   { background: var(--c-brand-50); color: var(--c-brand-700); }
.badge--neutral { background: var(--c-ink-100); color: var(--c-ink-500); }

.discount-chip {
  background: var(--c-danger-500); color: var(--c-white);
  border-radius: var(--r-full); padding: 1px var(--sp-2);
  font-size: var(--fs-xs); font-weight: 700;
}

/* ---------- Forms ------------------------------------------------- */
.field { margin-bottom: var(--sp-4); }
.field__label {
  display: block; margin-bottom: var(--sp-2);
  font-size: var(--fs-md); font-weight: 500; color: var(--c-ink-700);
}
.field__label .req { color: var(--c-danger-500); }
.field__hint { margin-top: var(--sp-1); font-size: var(--fs-xs); color: var(--c-ink-400); }
.field__error { margin-top: var(--sp-1); font-size: var(--fs-xs); color: var(--c-danger-500); }

.input, .select, .textarea {
  width: 100%; min-height: 46px;
  padding: var(--sp-2) var(--sp-3);
  background: var(--c-white);
  border: 1px solid var(--c-ink-200);
  border-radius: var(--r-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.input:hover, .select:hover, .textarea:hover { border-color: var(--c-ink-300); }
.input:focus, .select:focus, .textarea:focus {
  outline: none; border-color: var(--c-brand-500);
  box-shadow: 0 0 0 3px var(--c-brand-50);
}
.input[aria-invalid="true"] { border-color: var(--c-danger-500); }
.textarea { min-height: 110px; resize: vertical; line-height: var(--lh-normal); }
.select { appearance: none; padding-inline-end: var(--sp-8); background-image: none; }

.check { display: flex; align-items: flex-start; gap: var(--sp-2); cursor: pointer; }
.check input { width: 18px; height: 18px; margin-top: 3px; accent-color: var(--c-brand-500); flex: 0 0 auto; }

/* ---------- Alerts ------------------------------------------------ */
.alert {
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-md);
  border: 1px solid transparent;
  font-size: var(--fs-md);
  margin-bottom: var(--sp-4);
}
.alert--success { background: var(--c-success-50); border-color: #bfe8d1; color: #0b6b3d; }
.alert--danger  { background: var(--c-danger-50); border-color: #f6c9c9; color: #97201f; }
.alert--warning { background: var(--c-warning-50); border-color: #f5dca8; color: #8a5700; }
.alert--info    { background: var(--c-brand-50); border-color: var(--c-brand-200); color: var(--c-brand-700); }
.alert ul { padding-inline-start: var(--sp-4); list-style: disc; }

/* ---------- Header ----------------------------------------------- */
.header { position: sticky; top: 0; z-index: var(--z-header); background: var(--c-white); box-shadow: var(--sh-xs); }
.header__top { display: flex; align-items: center; gap: var(--sp-4); height: var(--header-h); }
.header__logo { display: flex; align-items: center; gap: var(--sp-2); font-weight: 700; font-size: var(--fs-lg); flex: 0 0 auto; }
.header__logo img { width: 34px; height: 34px; }
.header__actions { display: flex; align-items: center; gap: var(--sp-2); flex: 0 0 auto; }

.cart-btn { position: relative; display: inline-flex; align-items: center; gap: var(--sp-2); padding: 0 var(--sp-3); min-height: 42px; border: 1px solid var(--c-ink-200); border-radius: var(--r-md); }
.cart-btn__count {
  position: absolute; inset-block-start: -6px; inset-inline-start: -6px;
  min-width: 20px; height: 20px; padding: 0 5px;
  display: grid; place-items: center;
  background: var(--c-danger-500); color: var(--c-white);
  border-radius: var(--r-full); font-size: 11px; font-weight: 700;
}
.cart-btn__count[hidden] { display: none; }

/* Search + autocomplete */
.search { position: relative; flex: 1 1 auto; max-width: 620px; }
.search__input { padding-inline-start: var(--sp-10); background: var(--c-ink-50); border-color: transparent; }
.search__input:focus { background: var(--c-white); }
.search__icon { position: absolute; inset-inline-start: var(--sp-3); inset-block-start: 50%; transform: translateY(-50%); color: var(--c-ink-400); pointer-events: none; }
.search__panel {
  position: absolute; inset-inline: 0; top: calc(100% + 6px);
  background: var(--c-white); border: 1px solid var(--c-ink-100);
  border-radius: var(--r-lg); box-shadow: var(--sh-lg);
  padding: var(--sp-2); max-height: 70vh; overflow-y: auto; z-index: 10;
}
.search__panel[hidden] { display: none; }
.search__group-title { padding: var(--sp-2) var(--sp-3); font-size: var(--fs-xs); color: var(--c-ink-400); }
.search__item { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-2) var(--sp-3); border-radius: var(--r-md); }
.search__item:hover, .search__item.is-active { background: var(--c-ink-50); }
.search__item img { width: 40px; height: 40px; object-fit: contain; border-radius: var(--r-sm); }

/* Mega menu */
.nav { border-top: 1px solid var(--c-ink-100); }
.nav__list { display: flex; align-items: center; gap: var(--sp-1); overflow-x: auto; scrollbar-width: none; }
.nav__list::-webkit-scrollbar { display: none; }
.nav__item { position: relative; flex: 0 0 auto; }
.nav__link { display: inline-flex; align-items: center; gap: var(--sp-1); padding: var(--sp-3) var(--sp-3); font-size: var(--fs-md); white-space: nowrap; }
.nav__link:hover { color: var(--c-brand-600); }
.mega {
  position: absolute; inset-inline-start: 0; top: 100%;
  min-width: 560px; padding: var(--sp-5);
  background: var(--c-white); border: 1px solid var(--c-ink-100);
  border-radius: var(--r-lg); box-shadow: var(--sh-lg);
  display: none; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5);
}
.nav__item:hover > .mega, .nav__item:focus-within > .mega { display: grid; }
.mega__col-title { font-weight: 700; margin-bottom: var(--sp-2); font-size: var(--fs-md); }
.mega__link { display: block; padding: var(--sp-1) 0; font-size: var(--fs-sm); color: var(--c-ink-500); }
.mega__link:hover { color: var(--c-brand-600); }

/* ---------- Breadcrumb ------------------------------------------- */
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: var(--sp-1); font-size: var(--fs-sm); color: var(--c-ink-400); padding-block: var(--sp-3); }
.breadcrumb a:hover { color: var(--c-brand-600); }
.breadcrumb__sep { opacity: 0.5; }

/* ---------- Product card ---------------------------------------- */
.product-grid {
  display: grid; gap: var(--sp-3);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (min-width: 640px)  { .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--sp-4); } }
@media (min-width: 1024px) { .product-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (min-width: 1280px) { .product-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); } }

.product-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--c-white); border: 1px solid var(--c-ink-100);
  border-radius: var(--r-lg); padding: var(--sp-3);
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}
.product-card:hover { box-shadow: var(--sh-md); border-color: var(--c-ink-200); transform: translateY(-2px); }
.product-card__media { position: relative; aspect-ratio: 1 / 1; margin-bottom: var(--sp-3); }
.product-card__media img { width: 100%; height: 100%; object-fit: contain; }
.product-card__flags { position: absolute; inset-block-start: 0; inset-inline-start: 0; display: flex; flex-direction: column; gap: var(--sp-1); }
.product-card__quick { position: absolute; inset-block-start: 0; inset-inline-end: 0; display: flex; flex-direction: column; gap: var(--sp-1); opacity: 0; transition: opacity var(--transition); }
.product-card:hover .product-card__quick, .product-card:focus-within .product-card__quick { opacity: 1; }
@media (hover: none) { .product-card__quick { opacity: 1; } }
.product-card__brand { font-size: var(--fs-xs); color: var(--c-ink-400); margin-bottom: 2px; }
.product-card__title {
  font-size: var(--fs-md); font-weight: 500; line-height: 1.5; min-height: 3em;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.product-card__rating { display: flex; align-items: center; gap: var(--sp-1); font-size: var(--fs-xs); color: var(--c-ink-400); margin-top: var(--sp-2); }
.product-card__price { margin-top: auto; padding-top: var(--sp-3); }
.price-old { font-size: var(--fs-xs); color: var(--c-ink-300); text-decoration: line-through; }
.price-now { font-size: var(--fs-lg); font-weight: 700; color: var(--c-ink-900); }
.price-now small { font-size: var(--fs-xs); font-weight: 400; color: var(--c-ink-500); }
.price-out { font-size: var(--fs-md); color: var(--c-danger-500); font-weight: 500; }

.star { color: var(--c-ink-200); font-size: var(--fs-sm); }
.star.is-filled { color: #f5a623; }

/* Horizontal scroller for home rows */
.scroller { display: flex; gap: var(--sp-3); overflow-x: auto; padding-bottom: var(--sp-2); scroll-snap-type: x mandatory; scrollbar-width: thin; }
.scroller > * { flex: 0 0 172px; scroll-snap-align: start; }
@media (min-width: 768px) { .scroller > * { flex: 0 0 214px; } }

/* ---------- Catalog layout -------------------------------------- */
.catalog { display: grid; gap: var(--sp-5); grid-template-columns: 1fr; align-items: start; }
@media (min-width: 1024px) { .catalog { grid-template-columns: 268px minmax(0, 1fr); } }

.filters { display: none; }
@media (min-width: 1024px) { .filters { display: block; position: sticky; top: calc(var(--header-h) + var(--sp-4)); } }
.filter-group { border-bottom: 1px solid var(--c-ink-100); padding-block: var(--sp-4); }
.filter-group:last-child { border-bottom: 0; }
.filter-group__title { display: flex; align-items: center; justify-content: space-between; font-size: var(--fs-md); font-weight: 700; margin-bottom: var(--sp-3); }
.filter-list { max-height: 240px; overflow-y: auto; display: flex; flex-direction: column; gap: var(--sp-2); }
.filter-chip-row { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.chip {
  display: inline-flex; align-items: center; gap: var(--sp-1);
  padding: var(--sp-1) var(--sp-3); min-height: 34px;
  background: var(--c-white); border: 1px solid var(--c-ink-200);
  border-radius: var(--r-full); font-size: var(--fs-sm);
}
.chip:hover { border-color: var(--c-brand-400); }
.chip.is-active { background: var(--c-brand-50); border-color: var(--c-brand-500); color: var(--c-brand-700); font-weight: 500; }
.chip__swatch { width: 14px; height: 14px; border-radius: 50%; border: 1px solid rgba(0,0,0,0.1); }

.toolbar {
  display: flex; align-items: center; gap: var(--sp-2);
  background: var(--c-white); border: 1px solid var(--c-ink-100);
  border-radius: var(--r-lg); padding: var(--sp-2) var(--sp-3);
  margin-bottom: var(--sp-4); overflow-x: auto;
}
.toolbar__sorts { display: flex; gap: var(--sp-1); }
.sort-link { padding: var(--sp-1) var(--sp-3); border-radius: var(--r-md); font-size: var(--fs-sm); color: var(--c-ink-500); white-space: nowrap; }
.sort-link:hover { background: var(--c-ink-50); }
.sort-link.is-active { background: var(--c-brand-50); color: var(--c-brand-700); font-weight: 500; }

.filter-fab { position: fixed; inset-block-end: 78px; inset-inline-start: var(--sp-4); z-index: 90; box-shadow: var(--sh-lg); }
@media (min-width: 1024px) { .filter-fab { display: none; } }

/* ---------- Drawer / Modal -------------------------------------- */
.overlay {
  position: fixed; inset: 0; background: rgba(16, 19, 26, 0.45);
  opacity: 0; visibility: hidden; transition: opacity var(--transition), visibility var(--transition);
  z-index: var(--z-drawer);
}
.overlay.is-open { opacity: 1; visibility: visible; }

.drawer {
  position: fixed; inset-block: 0; inset-inline-end: 0;
  width: min(92vw, 400px); background: var(--c-white);
  transform: translateX(-100%); /* RTL: off-screen to the left of its edge */
  visibility: hidden; /* off-screen + untabbable while closed */
  transition: transform var(--transition), visibility var(--transition);
  z-index: calc(var(--z-drawer) + 1);
  display: flex; flex-direction: column;
}
[dir="rtl"] .drawer { transform: translateX(100%); }
.drawer.is-open { transform: translateX(0) !important; visibility: visible; }
.drawer__head { display: flex; align-items: center; justify-content: space-between; padding: var(--sp-4); border-bottom: 1px solid var(--c-ink-100); }
.drawer__body { flex: 1 1 auto; overflow-y: auto; padding: var(--sp-4); }
.drawer__foot { padding: var(--sp-4); border-top: 1px solid var(--c-ink-100); }

.modal {
  position: fixed; inset: 0; z-index: var(--z-modal);
  display: grid; place-items: center; padding: var(--sp-4);
  opacity: 0; visibility: hidden; transition: opacity var(--transition), visibility var(--transition);
}
.modal.is-open { opacity: 1; visibility: visible; }
.modal__panel {
  position: relative; background: var(--c-white); border-radius: var(--r-xl);
  box-shadow: var(--sh-lg); width: min(94vw, 560px); max-height: 88vh; overflow-y: auto;
  transform: scale(0.97); transition: transform var(--transition);
}
.modal.is-open .modal__panel { transform: scale(1); }

/* ---------- Toast ----------------------------------------------- */
.toasts {
  position: fixed; inset-block-end: var(--sp-5); inset-inline-start: var(--sp-5);
  z-index: var(--z-toast); display: flex; flex-direction: column; gap: var(--sp-2);
  pointer-events: none;
}
.toast {
  display: flex; align-items: center; gap: var(--sp-2);
  min-width: 260px; max-width: 380px;
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-ink-900); color: var(--c-white);
  border-radius: var(--r-md); box-shadow: var(--sh-lg);
  font-size: var(--fs-md);
  animation: toast-in 200ms ease-out;
  pointer-events: auto;
}
.toast--success { background: #0d7a47; }
.toast--error { background: var(--c-danger-600); }
.toast--info { background: var(--c-ink-800); }
.toast.is-out { animation: toast-out 180ms ease-in forwards; }
@keyframes toast-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes toast-out { to { opacity: 0; transform: translateY(8px); } }
@media (max-width: 640px) {
  .toasts { inset-inline: var(--sp-4); inset-block-end: 84px; }
  .toast { max-width: none; }
}

/* ---------- Skeleton -------------------------------------------- */
.skeleton {
  background: linear-gradient(90deg, var(--c-ink-100) 25%, var(--c-ink-50) 37%, var(--c-ink-100) 63%);
  background-size: 400% 100%;
  animation: shimmer 1.3s ease-in-out infinite;
  border-radius: var(--r-sm);
}
@keyframes shimmer { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }
.sk-card { border: 1px solid var(--c-ink-100); border-radius: var(--r-lg); padding: var(--sp-3); background: var(--c-white); }
.sk-media { aspect-ratio: 1/1; margin-bottom: var(--sp-3); }
.sk-line { height: 12px; margin-bottom: var(--sp-2); }
.sk-line--60 { width: 60%; }
.sk-line--40 { width: 40%; }

/* ---------- Empty state ----------------------------------------- */
.empty { text-align: center; padding: var(--sp-12) var(--sp-4); }
.empty__art { width: 96px; height: 96px; margin: 0 auto var(--sp-4); opacity: 0.55; }
.empty__title { font-size: var(--fs-lg); margin-bottom: var(--sp-2); }
.empty__text { color: var(--c-ink-500); max-width: 420px; margin: 0 auto var(--sp-5); font-size: var(--fs-md); }

/* ---------- Product detail ------------------------------------- */
.pdp { display: grid; gap: var(--sp-6); grid-template-columns: 1fr; }
@media (min-width: 1024px) { .pdp { grid-template-columns: 420px minmax(0, 1fr) 296px; } }

.gallery__main { position: relative; aspect-ratio: 1/1; background: var(--c-white); border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--c-ink-100); cursor: zoom-in; }
.gallery__main img { width: 100%; height: 100%; object-fit: contain; transition: transform 180ms ease; }
.gallery__main.is-zoomed { cursor: crosshair; }
.gallery__main.is-zoomed img { transform: scale(2.2); }
.gallery__thumbs { display: flex; gap: var(--sp-2); margin-top: var(--sp-3); overflow-x: auto; }
.gallery__thumb { flex: 0 0 62px; aspect-ratio: 1/1; border: 1px solid var(--c-ink-200); border-radius: var(--r-md); padding: 2px; background: var(--c-white); }
.gallery__thumb img { width: 100%; height: 100%; object-fit: contain; }
.gallery__thumb.is-active { border-color: var(--c-brand-500); box-shadow: 0 0 0 2px var(--c-brand-50); }

.buybox { position: sticky; top: calc(var(--header-h) + var(--sp-4)); }
.variant-row { display: flex; flex-wrap: wrap; gap: var(--sp-2); margin-bottom: var(--sp-4); }
.qty { display: inline-flex; align-items: center; border: 1px solid var(--c-ink-200); border-radius: var(--r-md); overflow: hidden; }
.qty button { width: 40px; height: 42px; background: var(--c-white); border: 0; font-size: var(--fs-lg); color: var(--c-ink-500); }
.qty button:hover { background: var(--c-ink-50); color: var(--c-brand-600); }
.qty input { width: 52px; height: 42px; text-align: center; border: 0; border-inline: 1px solid var(--c-ink-200); }

.spec-table th, .spec-table td { padding: var(--sp-3); border-bottom: 1px solid var(--c-ink-100); text-align: start; font-size: var(--fs-md); vertical-align: top; }
.spec-table th { width: 190px; color: var(--c-ink-500); font-weight: 500; background: var(--c-ink-50); }

.tabs { display: flex; gap: var(--sp-1); border-bottom: 1px solid var(--c-ink-100); overflow-x: auto; margin-bottom: var(--sp-5); }
.tab { padding: var(--sp-3) var(--sp-4); font-size: var(--fs-md); color: var(--c-ink-500); border-bottom: 2px solid transparent; white-space: nowrap; background: none; border-top: 0; border-inline: 0; }
.tab.is-active { color: var(--c-brand-600); border-bottom-color: var(--c-brand-500); font-weight: 700; }
.tab-panel[hidden] { display: none; }

.accordion__item { border-bottom: 1px solid var(--c-ink-100); }
.accordion__trigger { display: flex; width: 100%; align-items: center; justify-content: space-between; padding: var(--sp-4) 0; background: none; border: 0; font-weight: 500; text-align: start; }
.accordion__panel { padding-bottom: var(--sp-4); color: var(--c-ink-500); font-size: var(--fs-md); }
.accordion__panel[hidden] { display: none; }

.rating-bar { display: flex; align-items: center; gap: var(--sp-2); font-size: var(--fs-sm); }
.rating-bar__track { flex: 1; height: 6px; background: var(--c-ink-100); border-radius: var(--r-full); overflow: hidden; }
.rating-bar__fill { height: 100%; background: #f5a623; }

.review { padding: var(--sp-4) 0; border-bottom: 1px solid var(--c-ink-100); }
.review__pros li::before { content: '+ '; color: var(--c-success-500); }
.review__cons li::before { content: '− '; color: var(--c-danger-500); }

/* ---------- Cart / Checkout ------------------------------------ */
.checkout-grid { display: grid; gap: var(--sp-5); grid-template-columns: 1fr; align-items: start; }
@media (min-width: 1024px) { .checkout-grid { grid-template-columns: minmax(0, 1fr) 344px; } }
.summary { position: sticky; top: calc(var(--header-h) + var(--sp-4)); }
.summary__row { display: flex; justify-content: space-between; align-items: center; padding-block: var(--sp-2); font-size: var(--fs-md); }
.summary__row--total { border-top: 1px dashed var(--c-ink-200); margin-top: var(--sp-2); padding-top: var(--sp-3); font-weight: 700; font-size: var(--fs-lg); }
.summary__row .discount { color: var(--c-success-500); }

.cart-line { display: grid; grid-template-columns: 88px minmax(0,1fr); gap: var(--sp-3); padding: var(--sp-4) 0; border-bottom: 1px solid var(--c-ink-100); }
.cart-line__media { aspect-ratio: 1/1; }
.cart-line__media img { width: 100%; height: 100%; object-fit: contain; }
@media (min-width: 768px) { .cart-line { grid-template-columns: 104px minmax(0,1fr) auto; align-items: center; } }

.steps { display: flex; align-items: center; gap: var(--sp-2); margin-bottom: var(--sp-5); font-size: var(--fs-sm); }
.step { display: flex; align-items: center; gap: var(--sp-2); color: var(--c-ink-400); }
.step__dot { width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: var(--c-ink-100); font-size: var(--fs-xs); }
.step.is-active { color: var(--c-brand-600); font-weight: 700; }
.step.is-active .step__dot { background: var(--c-brand-500); color: var(--c-white); }
.step.is-done .step__dot { background: var(--c-success-500); color: var(--c-white); }

.progress { height: 6px; background: var(--c-ink-100); border-radius: var(--r-full); overflow: hidden; }
.progress__fill { height: 100%; background: var(--c-success-500); transition: width var(--transition); }

/* ---------- Account ------------------------------------------- */
.account-grid { display: grid; gap: var(--sp-5); grid-template-columns: 1fr; align-items: start; }
@media (min-width: 1024px) { .account-grid { grid-template-columns: 248px minmax(0, 1fr); } }
.side-nav__link { display: flex; align-items: center; gap: var(--sp-2); padding: var(--sp-3); border-radius: var(--r-md); font-size: var(--fs-md); color: var(--c-ink-700); }
.side-nav__link:hover { background: var(--c-ink-50); }
.side-nav__link.is-active { background: var(--c-brand-50); color: var(--c-brand-700); font-weight: 700; }

.stat-grid { display: grid; gap: var(--sp-3); grid-template-columns: repeat(2, 1fr); }
@media (min-width: 768px) { .stat-grid { grid-template-columns: repeat(4, 1fr); } }
.stat { padding: var(--sp-4); background: var(--c-white); border: 1px solid var(--c-ink-100); border-radius: var(--r-lg); }
.stat__value { font-size: var(--fs-2xl); font-weight: 700; }
.stat__label { font-size: var(--fs-sm); color: var(--c-ink-500); }

/* ---------- Table --------------------------------------------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table { min-width: 620px; }
.table th, .table td { padding: var(--sp-3); text-align: start; border-bottom: 1px solid var(--c-ink-100); font-size: var(--fs-md); white-space: nowrap; }
.table th { background: var(--c-ink-50); color: var(--c-ink-500); font-weight: 500; }
.table tbody tr:hover { background: var(--c-ink-50); }

/* ---------- Pagination --------------------------------------- */
.pagination { display: flex; justify-content: center; gap: var(--sp-1); flex-wrap: wrap; margin-block: var(--sp-6); }
.pagination a, .pagination span {
  min-width: 40px; height: 40px; display: grid; place-items: center;
  padding-inline: var(--sp-2); border: 1px solid var(--c-ink-200);
  border-radius: var(--r-md); background: var(--c-white); font-size: var(--fs-md);
}
.pagination a:hover { border-color: var(--c-brand-400); color: var(--c-brand-600); }
.pagination .is-current { background: var(--c-brand-500); border-color: var(--c-brand-500); color: var(--c-white); font-weight: 700; }
.pagination .is-disabled { opacity: 0.45; pointer-events: none; }

/* ---------- Hero / banners ----------------------------------- */
.hero { display: grid; gap: var(--sp-3); grid-template-columns: 1fr; margin-block: var(--sp-4); }
@media (min-width: 1024px) { .hero { grid-template-columns: minmax(0,1fr) 300px; } }
.slider { position: relative; border-radius: var(--r-lg); overflow: hidden; background: var(--c-white); }
.slider__track { display: flex; transition: transform 320ms ease; }
.slider__slide { flex: 0 0 100%; }
.slider__slide img { width: 100%; aspect-ratio: 21/9; object-fit: cover; }
.slider__dots { position: absolute; inset-block-end: var(--sp-3); inset-inline: 0; display: flex; justify-content: center; gap: var(--sp-1); }
.slider__dot { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.6); border: 0; }
.slider__dot.is-active { background: var(--c-white); width: 22px; border-radius: var(--r-full); }
.slider__nav { position: absolute; inset-block-start: 50%; transform: translateY(-50%); width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.9); border: 0; box-shadow: var(--sh-sm); display: grid; place-items: center; }
.slider__nav--prev { inset-inline-start: var(--sp-3); }
.slider__nav--next { inset-inline-end: var(--sp-3); }

.category-pills { display: flex; gap: var(--sp-3); overflow-x: auto; padding-block: var(--sp-2); }
.category-pill { flex: 0 0 auto; text-align: center; width: 92px; }
.category-pill__art { width: 72px; height: 72px; margin: 0 auto var(--sp-2); border-radius: 50%; background: var(--c-white); border: 1px solid var(--c-ink-100); display: grid; place-items: center; overflow: hidden; }
.category-pill span { font-size: var(--fs-xs); display: block; line-height: 1.4; }

.brand-grid { display: grid; gap: var(--sp-3); grid-template-columns: repeat(3, 1fr); }
@media (min-width: 768px) { .brand-grid { grid-template-columns: repeat(6, 1fr); } }
.brand-tile { display: grid; place-items: center; padding: var(--sp-4); background: var(--c-white); border: 1px solid var(--c-ink-100); border-radius: var(--r-md); min-height: 84px; }
.brand-tile img { max-height: 44px; object-fit: contain; }

/* ---------- Footer ------------------------------------------- */
.footer { background: var(--c-white); border-top: 1px solid var(--c-ink-100); margin-top: var(--sp-12); padding-block: var(--sp-8) 0; }
.footer__grid { display: grid; gap: var(--sp-6); grid-template-columns: 1fr; }
@media (min-width: 768px) { .footer__grid { grid-template-columns: 1.4fr repeat(3, 1fr); } }
.footer__title { font-size: var(--fs-md); margin-bottom: var(--sp-3); }
.footer__link { display: block; padding: var(--sp-1) 0; font-size: var(--fs-sm); color: var(--c-ink-500); }
.footer__link:hover { color: var(--c-brand-600); }
.footer__bottom { margin-top: var(--sp-6); padding-block: var(--sp-4); border-top: 1px solid var(--c-ink-100); font-size: var(--fs-xs); color: var(--c-ink-400); text-align: center; }
.newsletter { display: flex; gap: var(--sp-2); margin-top: var(--sp-3); }

/* ---------- Mobile bottom nav ------------------------------- */
.bottom-nav {
  position: fixed; inset-block-end: 0; inset-inline: 0; z-index: 95;
  display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--c-white); border-top: 1px solid var(--c-ink-100);
  padding-block: var(--sp-1); padding-bottom: max(var(--sp-1), env(safe-area-inset-bottom));
}
.bottom-nav__item { display: grid; place-items: center; gap: 2px; padding: var(--sp-1); font-size: 10px; color: var(--c-ink-500); min-height: 52px; }
.bottom-nav__item.is-active { color: var(--c-brand-600); }
@media (min-width: 1024px) { .bottom-nav { display: none; } }
@media (max-width: 1023px) { body { padding-bottom: 60px; } }

/* Sticky mobile CTA on product page */
.sticky-cta {
  position: fixed; inset-block-end: 60px; inset-inline: 0; z-index: 94;
  display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-white); border-top: 1px solid var(--c-ink-100);
  box-shadow: 0 -4px 14px rgba(16,19,26,0.06);
}
@media (min-width: 1024px) { .sticky-cta { display: none; } }

/* ---------- CMS prose -------------------------------------- */
.prose { font-size: var(--fs-base); line-height: 1.9; color: var(--c-ink-700); }
.prose h2 { font-size: var(--fs-xl); margin: var(--sp-6) 0 var(--sp-3); }
.prose h3 { font-size: var(--fs-lg); margin: var(--sp-5) 0 var(--sp-2); }
.prose ul, .prose ol { padding-inline-start: var(--sp-5); margin-bottom: var(--sp-4); list-style: disc; }
.prose ol { list-style: decimal; }
.prose a { color: var(--c-brand-600); text-decoration: underline; }
.prose img { border-radius: var(--r-md); margin-block: var(--sp-4); }
.prose table th, .prose table td { border: 1px solid var(--c-ink-200); padding: var(--sp-2); }