/* ============================================
   CourseraVoyant Inc. — Layout System
   Container · Grid · Section Spacing
   ============================================ */

/* ---- Container ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

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

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

.container--fluid {
  max-width: 100%;
}

/* ---- Section Spacing ---- */
.section {
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-4xl);
}

.section--sm {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

.section--lg {
  padding-top: var(--space-5xl);
  padding-bottom: var(--space-5xl);
}

.section--tight {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

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

.section--navy h2,
.section--navy h3,
.section--navy h4 {
  color: var(--color-white);
}

.section--navy p {
  color: rgba(255, 255, 255, 0.8);
}

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

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

.section--gold {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-white);
}

.section--gold h2,
.section--gold h3 {
  color: var(--color-white);
}

/* ---- Section Header ---- */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-3xl);
}

.section-header--left {
  text-align: left;
  margin-left: 0;
}

/* ---- Grid System ---- */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--5 { grid-template-columns: repeat(5, 1fr); }
.grid--6 { grid-template-columns: repeat(6, 1fr); }

.grid--gap-sm { gap: var(--space-md); }
.grid--gap-md { gap: var(--space-lg); }
.grid--gap-lg { gap: var(--space-2xl); }

/* ---- Content Layouts ---- */
.content-row {
  display: flex;
  align-items: center;
  gap: var(--space-3xl);
}

.content-row--reverse {
  flex-direction: row-reverse;
}

.content-col {
  flex: 1;
}

.content-col--narrow {
  flex: 0 0 40%;
}

.content-col--wide {
  flex: 0 0 55%;
}

/* ---- Split Layout ---- */
.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

/* ---- Stacked Layout ---- */
.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.stack--lg { gap: var(--space-xl); }
.stack--xl { gap: var(--space-2xl); }
.stack--sm { gap: var(--space-sm); }

/* ---- Sidebar Layout ---- */
.sidebar-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-3xl);
}

/* ---- Hero Full Height ---- */
.hero-full {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-half {
  min-height: 60vh;
  display: flex;
  align-items: center;
  position: relative;
}

/* ---- Decorative Background ---- */
.bg-gradient-navy {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
}

.bg-gradient-gold {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
}

.bg-pattern-dots {
  background-image: radial-gradient(circle, rgba(197, 165, 114, 0.15) 1px, transparent 1px);
  background-size: 24px 24px;
}

.bg-pattern-grid {
  background-image:
    linear-gradient(rgba(10, 31, 61, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 31, 61, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ---- Absolute Decorative ---- */
.deco-circle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.deco-circle--gold {
  background: radial-gradient(circle, rgba(197, 165, 114, 0.12), transparent 70%);
}

.deco-circle--navy {
  background: radial-gradient(circle, rgba(10, 31, 61, 0.08), transparent 70%);
}

/* ---- Main Content Area ---- */
.main-content {
  position: relative;
  z-index: var(--z-base);
}

/* ---- Article Body ---- */
.article-body {
  max-width: 760px;
  margin: 0 auto;
}

.article-body p {
  font-size: var(--fs-body-lg);
  line-height: var(--lh-relaxed);
  color: var(--color-text-primary);
  margin-bottom: var(--space-lg);
}

.article-body h2 {
  font-size: var(--fs-h3);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.article-body h3 {
  font-size: var(--fs-h4);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.article-body ul,
.article-body ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.article-body li {
  margin-bottom: var(--space-xs);
  line-height: var(--lh-relaxed);
}