/**
 * NOXEN CSS FRAMEWORK v2.1.2
 * Layer 4 — Layout Engine
 * Smart Grid · Fluid Layouts · Section system · Flex utilities
 */

/* ═══════════════════════════════════════
   SECTION  nx="section"
   Full-width page sections with intent-based sizing
═══════════════════════════════════════ */
[nx="section"] {
  width: 100%;
  padding: var(--nx-space-9) var(--nx-fluid-space-xl);
}

[nx="section"][size="hero"] {
  padding: var(--nx-space-10) var(--nx-fluid-space-xl);
  min-height: 90vh;
  display: flex;
  align-items: center;
}

[nx="section"][size="full"] {
  padding: var(--nx-fluid-space-xl);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

[nx="section"][size="narrow"] {
  padding: var(--nx-space-7) var(--nx-fluid-space-xl);
  max-width: 760px;
  margin: 0 auto;
}

[nx="section"][size="wide"] {
  padding: var(--nx-space-8) var(--nx-fluid-space-xl);
  max-width: 1400px;
  margin: 0 auto;
}

[nx="section"][size="sm"] {
  padding: var(--nx-space-7) var(--nx-fluid-space-xl);
}

[nx="section"][size="lg"] {
  padding: var(--nx-space-9) var(--nx-fluid-space-xl);
}

/* ═══════════════════════════════════════
   CONTAINER
═══════════════════════════════════════ */
[nx="container"] {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--nx-fluid-space-md);
}

[nx="container"][size="sm"] {
  max-width: 640px;
}

[nx="container"][size="md"] {
  max-width: 768px;
}

[nx="container"][size="lg"] {
  max-width: 1024px;
}

[nx="container"][size="xl"] {
  max-width: 1280px;
}

[nx="container"][size="full"] {
  max-width: 100%;
}

/* ═══════════════════════════════════════
   SMART GRID  nx="grid"
   Intent-based CSS Grid system
═══════════════════════════════════════ */
[nx="grid"] {
  display: grid;
  gap: var(--nx-fluid-space-md);
}

/* Column count shortcuts */
[nx="grid"][cols="1"] {
  grid-template-columns: 1fr;
}

[nx="grid"][cols="2"] {
  grid-template-columns: repeat(2, 1fr);
}

[nx="grid"][cols="3"] {
  grid-template-columns: repeat(3, 1fr);
}

[nx="grid"][cols="4"] {
  grid-template-columns: repeat(4, 1fr);
}

[nx="grid"][cols="5"] {
  grid-template-columns: repeat(5, 1fr);
}

[nx="grid"][cols="6"] {
  grid-template-columns: repeat(6, 1fr);
}

/* Auto-responsive — fills columns automatically */
[nx="grid"][cols="auto"],
[nx="grid"][cols="auto-sm"] {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 200px), 1fr));
}

[nx="grid"][cols="auto-md"] {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
}

[nx="grid"][cols="auto-lg"] {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 360px), 1fr));
}

[nx="grid"][cols="auto-xl"] {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 440px), 1fr));
}

/* Intent-based layouts */
[nx="grid"][layout="sidebar-main"] {
  grid-template-columns: 280px 1fr;
}

[nx="grid"][layout="main-sidebar"] {
  grid-template-columns: 1fr 280px;
}

[nx="grid"][layout="holy-grail"] {
  grid-template-columns: 220px 1fr 220px;
  grid-template-rows: auto 1fr auto;
}

[nx="grid"][layout="dashboard"] {
  grid-template-columns: 240px 1fr;
  grid-template-rows: 60px 1fr auto;
}

[nx="grid"][layout="mosaic"] {
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 200px;
}

[nx="grid"][layout="magazine"] {
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: auto;
}

[nx="grid"][layout="masonry"] {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  grid-auto-rows: 8px;
  /* JS fills in row spans */
  align-items: start;
}

/* Gap variants */
[nx="grid"][gap="none"] {
  gap: 0;
}

[nx="grid"][gap="xs"] {
  gap: var(--nx-space-2);
}

[nx="grid"][gap="sm"] {
  gap: var(--nx-space-3);
}

[nx="grid"][gap="md"] {
  gap: var(--nx-space-5);
}

[nx="grid"][gap="lg"] {
  gap: var(--nx-space-7);
}

[nx="grid"][gap="xl"] {
  gap: var(--nx-space-9);
}

/* Alignment */
[nx="grid"][align="start"] {
  align-items: start;
}

[nx="grid"][align="center"] {
  align-items: center;
}

[nx="grid"][align="end"] {
  align-items: end;
}

[nx="grid"][align="stretch"] {
  align-items: stretch;
}

[nx="grid"][justify="start"] {
  justify-items: start;
}

[nx="grid"][justify="center"] {
  justify-items: center;
}

[nx="grid"][justify="end"] {
  justify-items: end;
}

/* Subgrid support */
[nx="grid"][subgrid] {
  display: subgrid;
  grid-column: 1 / -1;
}

/* Responsive breakpoints */
@media (max-width: 1024px) {

  [nx="grid"][cols="4"],
  [nx="grid"][cols="5"],
  [nx="grid"][cols="6"] {
    grid-template-columns: repeat(3, 1fr);
  }

  [nx="grid"][layout="holy-grail"] {
    grid-template-columns: 1fr;
  }

  [nx="grid"][layout="dashboard"] {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {

  [nx="grid"][cols="3"],
  [nx="grid"][cols="4"],
  [nx="grid"][cols="5"],
  [nx="grid"][cols="6"] {
    grid-template-columns: repeat(2, 1fr);
  }

  [nx="grid"][layout="sidebar-main"],
  [nx="grid"][layout="main-sidebar"] {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {

  [nx="grid"][cols="2"],
  [nx="grid"][cols="3"],
  [nx="grid"][cols="4"],
  [nx="grid"][cols="5"],
  [nx="grid"][cols="6"] {
    grid-template-columns: 1fr;
  }
}

/* ═══════════════════════════════════════
   GRID ITEM SPANS
═══════════════════════════════════════ */
[span="2"] {
  grid-column: span 2;
}

[span="3"] {
  grid-column: span 3;
}

[span="4"] {
  grid-column: span 4;
}

[span="full"] {
  grid-column: 1 / -1;
}

[row-span="2"] {
  grid-row: span 2;
}

[row-span="3"] {
  grid-row: span 3;
}

/* ═══════════════════════════════════════
   FLEX ROW/WRAP
═══════════════════════════════════════ */
[nx="row"] {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--nx-space-4);
  align-items: center;
}

[nx="row"][gap="none"] {
  gap: 0;
}

[nx="row"][gap="xs"] {
  gap: var(--nx-space-2);
}

[nx="row"][gap="sm"] {
  gap: var(--nx-space-3);
}

[nx="row"][gap="md"] {
  gap: var(--nx-space-5);
}

[nx="row"][gap="lg"] {
  gap: var(--nx-space-7);
}

[nx="row"][nowrap] {
  flex-wrap: nowrap;
}

[nx="row"][justify="between"] {
  justify-content: space-between;
}

[nx="row"][justify="center"] {
  justify-content: center;
}

[nx="row"][justify="end"] {
  justify-content: flex-end;
}

[nx="row"][justify="around"] {
  justify-content: space-around;
}

[nx="row"][align="start"] {
  align-items: flex-start;
}

[nx="row"][align="end"] {
  align-items: flex-end;
}

[nx="row"][align="stretch"] {
  align-items: stretch;
}

/* ═══════════════════════════════════════
   STACK (vertical flex column)
═══════════════════════════════════════ */
[nx="stack"] {
  display: flex;
  flex-direction: column;
  gap: var(--nx-space-4);
}

[nx="stack"][gap="none"] {
  gap: 0;
}

[nx="stack"][gap="xs"] {
  gap: var(--nx-space-2);
}

[nx="stack"][gap="sm"] {
  gap: var(--nx-space-3);
}

[nx="stack"][gap="md"] {
  gap: var(--nx-space-5);
}

[nx="stack"][gap="lg"] {
  gap: var(--nx-space-7);
}

[nx="stack"][align="center"] {
  align-items: center;
}

[nx="stack"][align="end"] {
  align-items: flex-end;
}

[nx="stack"][align="start"] {
  align-items: flex-start;
}

[nx="stack"][align="stretch"] {
  align-items: stretch;
}

/* ═══════════════════════════════════════
   CENTER — perfect centering utility
═══════════════════════════════════════ */
[nx="center"] {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ═══════════════════════════════════════
   DIVIDER  nx="divider"
═══════════════════════════════════════ */
[nx="divider"] {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--nx-color-border) 20%, var(--nx-color-border) 80%, transparent);
  margin: var(--nx-space-5) 0;
  border: none;
}

[nx="divider"][variant="accent"] {
  background: linear-gradient(90deg, transparent, var(--nx-color-accent-md) 20%, var(--nx-color-accent) 50%, var(--nx-color-accent-md) 80%, transparent);
  box-shadow: var(--nx-ag-seam-glow);
}

[nx="divider"][vertical] {
  height: auto;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--nx-color-border) 20%, var(--nx-color-border) 80%, transparent);
  margin: 0 var(--nx-space-5);
  align-self: stretch;
}

/* ═══════════════════════════════════════
   SPACER
═══════════════════════════════════════ */
[nx="spacer"] {
  flex: 1 1 auto;
}