/* ==========================================================================
   Layout: container, sections, grid
   ========================================================================== */

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

.container--wide   { max-width: var(--container-wide); }
.container--narrow { max-width: var(--container-narrow); }

/* Section spacing */
.section {
  padding-block: var(--s-16);
}

@media (min-width: 1024px) {
  .section { padding-block: var(--s-24); }
}

.section--tight { padding-block: var(--s-12); }
@media (min-width: 1024px) {
  .section--tight { padding-block: var(--s-16); }
}

.section--loose { padding-block: var(--s-20); }
@media (min-width: 1024px) {
  .section--loose { padding-block: var(--s-32); }
}

.section--dark {
  background: var(--c-graphite-900);
  color: var(--c-white);
}

.section--ink {
  background: var(--c-ink);
  color: var(--c-white);
}

.section--mute {
  background: var(--c-stone-50);
}

.section--accent {
  background: var(--c-amber-500);
  color: var(--c-ink);
}

/* Section header (заголовок секции) */
.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  margin-bottom: var(--s-12);
  max-width: 720px;
}

.section-head--row {
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-between;
  max-width: none;
  flex-wrap: wrap;
  gap: var(--s-6);
}

.section-head--center {
  align-items: center;
  text-align: center;
  margin-inline: auto;
}

.section-head__title {
  font-size: var(--fs-h2);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: var(--fw-bold);
}

.section-head__lead {
  color: var(--c-text-muted);
  font-size: var(--fs-body-lg);
  max-width: 60ch;
}

.section--dark .section-head__lead {
  color: var(--c-graphite-400);
}

/* ==========================================================================
   Grid system
   ========================================================================== */
.grid { display: grid; gap: var(--s-4); }
@media (min-width: 768px)  { .grid { gap: var(--s-5); } }
@media (min-width: 1024px) { .grid { gap: var(--s-6); } }

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid--12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

@media (max-width: 1279px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1023px) {
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--12 { grid-template-columns: repeat(6, 1fr); }
}

@media (max-width: 639px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .grid--12 { grid-template-columns: repeat(4, 1fr); }
}

/* Asymmetric layouts */
.grid--hero {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  align-items: center;
  gap: var(--s-12);
}
@media (max-width: 1023px) {
  .grid--hero { grid-template-columns: 1fr; }
}

.grid--sidebar {
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: var(--s-8);
  align-items: start;
}
@media (max-width: 1023px) {
  .grid--sidebar { grid-template-columns: 1fr; }
}

.grid--sidebar-left {
  grid-template-columns: 240px minmax(0, 1fr);
  gap: var(--s-8);
  align-items: start;
}
@media (max-width: 1023px) {
  .grid--sidebar-left { grid-template-columns: 1fr; }
}

/* Stack utility (вертикальный flex с gap) */
.stack { display: flex; flex-direction: column; gap: var(--s-4); }
.stack-2 { gap: var(--s-2); }
.stack-3 { gap: var(--s-3); }
.stack-6 { gap: var(--s-6); }
.stack-8 { gap: var(--s-8); }
.stack-12 { gap: var(--s-12); }

/* Cluster (горизонтальный wrap-flex с gap) */
.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  align-items: center;
}

.cluster-4 { gap: var(--s-4); }
.cluster-6 { gap: var(--s-6); }

/* Spacer */
.spacer-h-4 { height: var(--s-4); }
.spacer-h-8 { height: var(--s-8); }
.spacer-h-12 { height: var(--s-12); }
.spacer-h-16 { height: var(--s-16); }

/* Page main */
.main { min-height: 60vh; }