/* ==========================================================================
   Technova — Layout
   Container, sections, grids and split layouts.
   ========================================================================== */

/* --- Container ----------------------------------------------------------- */

.container {
  width: min(var(--container-width), calc(100% - (var(--container-gutter) * 2)));
  margin-inline: auto;
}

.container--narrow {
  width: min(820px, calc(100% - (var(--container-gutter) * 2)));
}

/* --- Sections ------------------------------------------------------------ */

.section {
  padding-block: var(--section-y);
}

.section--lg {
  padding-block: var(--section-y-lg);
}

.section--tight {
  padding-block: clamp(2.5rem, 1.5rem + 3vw, 4rem);
}

.section--alt {
  background-color: var(--background);
}

.section--soft {
  background-color: var(--primary-soft);
}

.section--dark {
  background-color: var(--dark);
  color: rgba(255, 255, 255, 0.75);
}

.section--promotional,
.section--promo {
  background: linear-gradient(180deg, #ffffff 0%, #f7f4ff 100%);
  color: var(--text);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--promo h1,
.section--promo h2,
.section--promo h3 {
  color: var(--black);
}

/* Removes the double gap when two same-coloured sections stack. */
.section--flush-top {
  padding-top: 0;
}

/* --- Section header ------------------------------------------------------ */

.section-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--gap-md);
  margin-bottom: clamp(2.25rem, 1.5rem + 2vw, 3.5rem);
  max-width: 700px;
}

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

.section-header p {
  font-size: var(--fs-body-lg);
  color: var(--muted);
  max-width: var(--measure);
}

/* Heading on the left, a link/CTA pushed to the right. */
.section-header--split {
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-between;
  max-width: none;
  gap: var(--gap-lg);
}

.section-header--split .section-header__text {
  display: flex;
  flex-direction: column;
  gap: var(--gap-md);
  max-width: 640px;
}

/* --- Grids --------------------------------------------------------------- */

.grid {
  display: grid;
  gap: var(--gap-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);
}

/* Auto-fitting card grid — the default for course and feature cards. */
.grid--cards {
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.grid--cards-sm {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

/* --- Split (two-column) layouts ------------------------------------------ */

.split {
  display: grid;
  gap: var(--gap-xl);
  align-items: center;
}

/* 7 + 5 — used by the hero and the location section. */
.split--7-5 {
  grid-template-columns: 7fr 5fr;
}

/* 5 + 7 — used by the "how learning works" and about sections. */
.split--5-7 {
  grid-template-columns: 5fr 7fr;
}

.split--4-8 {
  grid-template-columns: 4fr 8fr;
}

.split--6-6 {
  grid-template-columns: 1fr 1fr;
}

.split--top {
  align-items: start;
}

/* Reverses visual order without changing DOM order (keeps reading order). */
.split__media--first {
  order: -1;
}

/* --- Stacks -------------------------------------------------------------- */

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--gap-md);
}

.stack--sm {
  gap: var(--gap-sm);
}

.stack--lg {
  gap: var(--gap-lg);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--gap-sm);
}

.cluster--md {
  gap: var(--gap-md);
}

/* --- Page hero (inner pages) --------------------------------------------- */

.page-hero {
  padding-block: clamp(2.5rem, 1.5rem + 4vw, 5rem) clamp(2.5rem, 1.5rem + 3vw, 4rem);
  background-color: var(--white);
  border-bottom: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
}

.page-hero__inner {
  max-width: 760px;
  display: flex;
  flex-direction: column;
  gap: var(--gap-md);
  position: relative;
  z-index: 1;
}

.page-hero__inner p {
  font-size: var(--fs-body-lg);
  color: var(--muted);
  max-width: var(--measure);
}

.page-hero--center .page-hero__inner {
  margin-inline: auto;
  text-align: center;
  align-items: center;
}

@media (max-width: 980px) {
  .grid--2,
  .grid--3,
  .grid--4,
  .split--7-5,
  .split--5-7,
  .split--4-8,
  .split--6-6 {
    grid-template-columns: 1fr;
  }

  .grid--cards,
  .grid--cards-sm {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  }

  .section-header--split {
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .container,
  .container--narrow {
    width: min(100% - 32px, var(--container-width));
  }

  .section-header--split {
    flex-direction: column;
  }

  .page-hero__inner {
    max-width: none;
  }
}