/* ============================================================
   PIKMO Games — Layout System
   Container, grid, section primitives
   ============================================================ */

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

.container--sm  { max-width: var(--container-sm); }
.container--md  { max-width: var(--container-md); }
.container--lg  { max-width: var(--container-lg); }
.container--2xl { max-width: var(--container-2xl); }

/* === Section === */
.section {
  padding-block: var(--section-gap);
}

.section--sm { padding-block: clamp(var(--sp-12), 5vw, var(--sp-20)); }
.section--lg { padding-block: clamp(var(--sp-20), 10vw, var(--sp-32)); }

/* === Grid === */
.grid {
  display: grid;
  gap: var(--sp-6);
}

.grid--2 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 220px), 1fr)); }

/* === Flex helpers === */
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between{ display: flex; align-items: center; justify-content: space-between; }
.flex-col    { display: flex; flex-direction: column; }
.flex-wrap   { flex-wrap: wrap; }
.gap-2  { gap: var(--sp-2); }
.gap-3  { gap: var(--sp-3); }
.gap-4  { gap: var(--sp-4); }
.gap-6  { gap: var(--sp-6); }
.gap-8  { gap: var(--sp-8); }

/* === Section header === */
.section-header {
  margin-bottom: var(--sp-12);
}

.section-header--center {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--sp-12);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--clr-secondary);
  margin-bottom: var(--sp-4);
}

.section-eyebrow::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--clr-secondary);
  border-radius: var(--radius-full);
}

.section-title {
  margin-bottom: var(--sp-4);
}

.section-lead {
  font-size: var(--text-lg);
  color: var(--clr-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 60ch;
}

/* === Page header === */
.page-header {
  padding-block: clamp(var(--sp-16), 8vw, var(--sp-24));
  background: var(--clr-bg-alt);
  border-bottom: 1px solid var(--clr-border-light);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 40%;
  height: 100%;
  background: linear-gradient(135deg, transparent 40%, var(--clr-secondary) 40%, var(--clr-secondary) 42%, transparent 42%);
  opacity: 0.06;
  pointer-events: none;
}

.page-title {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  letter-spacing: var(--tracking-tight);
  color: var(--clr-text);
  margin-bottom: var(--sp-3);
}

.page-lead {
  font-size: var(--text-lg);
  color: var(--clr-text-secondary);
  max-width: 56ch;
}

/* === Breadcrumb === */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-sm);
  color: var(--clr-text-tertiary);
  margin-bottom: var(--sp-6);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--clr-text-secondary);
}

.breadcrumb a:hover { color: var(--clr-primary); }

.breadcrumb__sep {
  opacity: 0.5;
}

/* === Content layout === */
.content-layout {
  display: grid;
  gap: var(--sp-16);
}

@media (min-width: 1024px) {
  .content-layout--sidebar {
    grid-template-columns: 1fr 280px;
    align-items: start;
  }
  .content-layout--sidebar-left {
    grid-template-columns: 280px 1fr;
    align-items: start;
  }
}

/* === Two-column hero layout === */
.split-layout {
  display: grid;
  gap: var(--sp-12);
  align-items: center;
}

@media (min-width: 768px) {
  .split-layout {
    grid-template-columns: 1fr 1fr;
  }
  .split-layout--wide {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

/* === Geometric accent shapes === */
.geo-accent {
  position: absolute;
  pointer-events: none;
  user-select: none;
  z-index: var(--z-base);
}

/* === Utility spacing === */
.mt-auto { margin-top: auto; }
.mb-0    { margin-bottom: 0; }
.mt-4    { margin-top: var(--sp-4); }
.mt-6    { margin-top: var(--sp-6); }
.mt-8    { margin-top: var(--sp-8); }

/* === Text alignment === */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }

/* === Display === */
.hidden { display: none; }
.visible { display: block; }

/* === Divider === */
.divider {
  border: none;
  border-top: 1px solid var(--clr-border);
  margin: var(--sp-8) 0;
}

/* === Sticky sidebar === */
.sticky-top {
  position: sticky;
  top: calc(var(--nav-height) + var(--sp-6));
}

/* === Prose content (privacy, legal pages) === */
.prose {
  max-width: 72ch;
}

.prose h2 {
  font-size: var(--text-2xl);
  margin-top: var(--sp-10);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-3);
  border-bottom: 2px solid var(--clr-border-light);
}

.prose h3 {
  font-size: var(--text-xl);
  margin-top: var(--sp-8);
  margin-bottom: var(--sp-3);
  color: var(--clr-primary);
}

.prose h4 {
  font-size: var(--text-lg);
  margin-top: var(--sp-6);
  margin-bottom: var(--sp-2);
}

.prose p {
  margin-bottom: var(--sp-4);
  max-width: none;
}

.prose ul, .prose ol {
  margin-bottom: var(--sp-4);
  padding-left: var(--sp-6);
}

.prose li {
  margin-bottom: var(--sp-2);
  color: var(--clr-text-secondary);
}

.prose li::marker { color: var(--clr-secondary); }

.prose table {
  margin-block: var(--sp-6);
  font-size: var(--text-sm);
}

.prose th {
  background: var(--clr-surface-2);
  color: var(--clr-text);
}

.prose td { color: var(--clr-text-secondary); }

/* === TOC (Table of Contents) === */
.toc {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  margin-bottom: var(--sp-8);
}

.toc__title {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--clr-text-tertiary);
  margin-bottom: var(--sp-4);
}

.toc__list {
  list-style: none;
  padding: 0;
  counter-reset: toc-counter;
}

.toc__list li {
  counter-increment: toc-counter;
  margin-bottom: var(--sp-2);
}

.toc__list a {
  display: flex;
  gap: var(--sp-3);
  color: var(--clr-text-secondary);
  font-size: var(--text-sm);
  transition: color var(--dur-fast);
}

.toc__list a::before {
  content: counter(toc-counter, decimal-leading-zero);
  color: var(--clr-secondary);
  font-weight: var(--weight-semibold);
  font-size: var(--text-xs);
  min-width: 1.5em;
}

.toc__list a:hover { color: var(--clr-primary); }