/* ============================================================
   Layout primitives
   ============================================================ */

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

@media (min-width: 768px) {
  .container { padding-inline: var(--sp-6); }
}

.main {
  flex: 1;
  padding-top: var(--sp-5);
  padding-bottom: calc(var(--bottomnav-h) + env(safe-area-inset-bottom, 0px) + var(--sp-6));
}

@media (min-width: 1024px) {
  .main { padding-bottom: var(--sp-16); }
}

.section {
  margin-top: var(--sp-8);
}

.section--tight { margin-top: var(--sp-6); }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-bottom: var(--sp-4);
}

.section-head__title {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  letter-spacing: -0.02em;
}

.section-head__sub {
  display: block;
  margin-top: 2px;
  font-size: var(--fs-sm);
  color: var(--text-3);
  font-weight: var(--fw-medium);
}

.section-head__link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--brand-700);
  white-space: nowrap;
  transition: color var(--dur-fast) var(--ease);
}
.section-head__link:hover { color: var(--brand); }
.section-head__link svg { width: 15px; height: 15px; }

/* Grids */
.grid {
  display: grid;
  gap: var(--sp-4);
}
.grid--categories {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--sp-3);
}
.grid--shops {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
}
.grid--products {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-3);
}

@media (min-width: 560px) {
  .grid--categories { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .grid--products { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 768px) {
  .grid--categories { grid-template-columns: repeat(8, minmax(0, 1fr)); }
  .grid--shops { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--sp-4); }
  .grid--products { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--sp-4); }
}

@media (min-width: 1024px) {
  .grid--shops { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .grid--products { grid-template-columns: repeat(5, minmax(0, 1fr)); }
}

/* Horizontal rail */
.rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 44%;
  gap: var(--sp-3);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: var(--sp-2);
  margin-inline: 0;
  padding-inline: 4px;
  scroll-padding-inline: 4px;
  scrollbar-width: none;
}
.rail::-webkit-scrollbar { display: none; }
.rail > * { scroll-snap-align: start; }

@media (min-width: 560px) { .rail { grid-auto-columns: 30%; } }
@media (min-width: 768px) { .rail { grid-auto-columns: 23%; } }
@media (min-width: 1024px) { .rail { grid-auto-columns: 18.5%; } }

/* Stack helper */
.stack { display: flex; flex-direction: column; gap: var(--sp-4); }
.row { display: flex; align-items: center; gap: var(--sp-3); }