/* ============================================
   BOHVISION - LAYOUT CSS
   Page layout structure and grid systems
   ============================================ */

/* ============================================
   MAIN LAYOUT STRUCTURE
   ============================================ */

html, body {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Main Content Wrapper */
main,
.site-main,
#main-content,
.content-wrapper {
  flex: 1;
  padding-top: 70px; /* Account for fixed header */
}

/* Page Container */
.page-container,
.page-wrapper {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 40px 30px;
}

.page-container.full-width,
.page-wrapper.full-width {
  max-width: 100%;
  padding: 0;
}

/* ============================================
   GRID SYSTEM
   ============================================ */

.grid {
  display: grid;
  gap: 20px;
}

.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); }

/* Auto-fit grids */
.grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-auto-sm {
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.grid-auto-lg {
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

/* Gap variations */
.grid-gap-0 { gap: 0; }
.grid-gap-1 { gap: 10px; }
.grid-gap-2 { gap: 20px; }
.grid-gap-3 { gap: 30px; }
.grid-gap-4 { gap: 40px; }
.grid-gap-5 { gap: 60px; }

/* ============================================
   FLEX LAYOUTS
   ============================================ */

.flex-row {
  display: flex;
  flex-direction: row;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-around {
  display: flex;
  align-items: center;
  justify-content: space-around;
}

.flex-start {
  display: flex;
  align-items: flex-start;
}

.flex-end {
  display: flex;
  align-items: flex-end;
}

/* ============================================
   SIDEBAR LAYOUT
   ============================================ */

.layout-sidebar,
.has-sidebar {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 40px;
}

.layout-sidebar-right,
.sidebar-right {
  grid-template-columns: 1fr 250px;
}

.sidebar {
  position: sticky;
  top: 90px;
  height: fit-content;
}

.sidebar-section {
  margin-bottom: 30px;
}

.sidebar-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.sidebar-list {
  list-style: none;
}

.sidebar-list li {
  margin-bottom: 8px;
}

.sidebar-list a {
  font-size: 13px;
  color: var(--text-secondary);
  display: block;
  padding: 5px 0;
}

.sidebar-list a:hover {
  color: var(--text-primary);
}

/* ============================================
   TWO COLUMN LAYOUT
   ============================================ */

.two-column,
.layout-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.two-column.narrow,
.layout-two-col.narrow {
  gap: 20px;
}

.two-column.wide,
.layout-two-col.wide {
  gap: 80px;
}

/* ============================================
   THREE COLUMN LAYOUT
   ============================================ */

.three-column,
.layout-three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

/* ============================================
   SPLIT LAYOUT
   ============================================ */

.split-layout {
  display: grid;
  grid-template-columns: 50% 50%;
  min-height: calc(100vh - 70px);
}

.split-left,
.split-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 60px;
}

.split-left {
  background: var(--bg-secondary);
}

.split-right {
  background: var(--bg-primary);
}

/* ============================================
   ASYMMETRIC LAYOUT
   ============================================ */

.asymmetric-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
}

.asymmetric-layout.reverse {
  grid-template-columns: 1fr 2fr;
}

/* ============================================
   SECTION LAYOUTS
   ============================================ */

.section {
  padding: 80px 0;
}

.section-sm {
  padding: 40px 0;
}

.section-lg {
  padding: 120px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  font-size: clamp(24px, 4vw, 36px);
  margin-bottom: 15px;
}

.section-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   HERO LAYOUT
   ============================================ */

.hero {
  min-height: calc(100vh - 70px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 30px;
  position: relative;
}

.hero-content {
  max-width: 800px;
  z-index: 2;
}

.hero-title {
  font-size: clamp(36px, 8vw, 72px);
  font-weight: 400;
  letter-spacing: -1px;
  margin-bottom: 20px;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   CONTENT BLOCKS
   ============================================ */

.content-block {
  margin-bottom: 60px;
}

.content-block:last-child {
  margin-bottom: 0;
}

.content-header {
  margin-bottom: 30px;
}

.content-header h2 {
  margin-bottom: 10px;
}

.content-header p {
  color: var(--text-secondary);
}

/* ============================================
   CARD LAYOUT
   ============================================ */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  border-color: var(--text-muted);
}

.card-image {
  aspect-ratio: 4/5;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-content {
  padding: 20px;
}

.card-title {
  font-size: 14px;
  margin-bottom: 8px;
}

.card-text {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 15px;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-muted);
}

/* ============================================
   RESPONSIVE LAYOUTS
   ============================================ */

@media (max-width: 1024px) {
  .layout-sidebar,
  .has-sidebar {
    grid-template-columns: 200px 1fr;
    gap: 30px;
  }
  
  .layout-sidebar-right,
  .sidebar-right {
    grid-template-columns: 1fr 200px;
  }
  
  .split-layout {
    grid-template-columns: 1fr;
  }
  
  .split-left,
  .split-right {
    padding: 40px;
    min-height: 50vh;
  }
  
  .asymmetric-layout,
  .asymmetric-layout.reverse {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .page-container,
  .page-wrapper {
    padding: 30px 20px;
  }
  
  .grid-2,
  .grid-3,
  .grid-4,
  .grid-5,
  .grid-6 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .layout-sidebar,
  .has-sidebar,
  .layout-sidebar-right,
  .sidebar-right {
    grid-template-columns: 1fr;
  }
  
  .sidebar {
    position: static;
    order: 2;
  }
  
  .two-column,
  .layout-two-col {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .three-column,
  .layout-three-col {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: 60px 0;
  }
  
  .section-lg {
    padding: 80px 0;
  }
  
  .hero {
    min-height: auto;
    padding: 80px 20px;
  }
  
  .split-left,
  .split-right {
    padding: 30px 20px;
  }
}

@media (max-width: 480px) {
  .grid-2,
  .grid-3,
  .grid-4,
  .grid-5,
  .grid-6 {
    grid-template-columns: 1fr;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-buttons button,
  .hero-buttons .btn {
    width: 100%;
  }
}