/* ============================================================================
   Layout System - SaaS-Ready Layouts
   ============================================================================ */

/* Admin Dashboard Layout */
.admin-layout {
  display: flex;
  min-height: 100vh;
  background-color: var(--color-gray-50);
}

.admin-sidebar {
  width: 260px;
  background-color: var(--color-white);
  border-right: 1px solid var(--color-gray-200);
  padding: var(--spacing-lg);
  position: fixed;
  left: 0;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  box-shadow: var(--shadow-sm);
}

.admin-main {
  flex: 1;
  margin-left: 260px;
  display: flex;
  flex-direction: column;
}

.admin-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  padding: var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-sm);
}

.admin-content {
  flex: 1;
  padding: var(--spacing-2xl);
  overflow-y: auto;
}

/* Sidebar Navigation */
.sidebar-nav {
  list-style: none;
  padding: 0;
}

.sidebar-nav-item {
  margin-bottom: var(--spacing-sm);
}

.sidebar-nav-link {
  display: block;
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--color-gray-700);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  font-weight: 500;
  font-size: 0.875rem;
  text-decoration: none;
}

.sidebar-nav-link:hover,
.sidebar-nav-link.active {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.sidebar-nav-section {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-200);
}

.sidebar-nav-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-gray-600);
  padding: var(--spacing-md) var(--spacing-lg);
  letter-spacing: 0.05em;
}

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.two-column-sidebar {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: var(--spacing-2xl);
}

/* Three Column Layout */
.three-column {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
}

/* Page Header */
.page-header {
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-gray-200);
}

.page-header-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-lg);
}

.page-header-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-gray-900);
}

.page-header-subtitle {
  font-size: 1rem;
  color: var(--color-gray-600);
  margin-top: var(--spacing-sm);
}

.page-header-actions {
  display: flex;
  gap: var(--spacing-md);
}

/* Section */
.section {
  margin-bottom: var(--spacing-2xl);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-gray-200);
}

.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-gray-900);
}

.section-actions {
  display: flex;
  gap: var(--spacing-md);
}

/* Form Layout */
.form-layout {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-sm);
}

.form-two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.form-full-width {
  grid-column: 1 / -1;
}

/* Card Layout */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.card-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: var(--spacing-2xl) var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-2xl);
}

.hero-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.hero-subtitle {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.95;
}

/* Content Grid */
.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

/* Flex Utilities */
.flex-column {
  display: flex;
  flex-direction: column;
}

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

.flex-wrap {
  flex-wrap: wrap;
}

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

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

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

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

/* Content Wrapper */
.content-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

/* Sticky Footer */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-footer {
  margin-top: auto;
  background-color: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-200);
  padding: var(--spacing-lg);
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-gray-600);
}

/* Responsive Adjustments */
@media (max-width: 1024px) {
  .admin-sidebar {
    width: 200px;
  }

  .admin-main {
    margin-left: 200px;
  }

  .two-column {
    grid-template-columns: 1fr;
  }

  .two-column-sidebar {
    grid-template-columns: 1fr;
  }

  .three-column {
    grid-template-columns: 1fr 1fr;
  }

  .form-two-column {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .admin-layout {
    flex-direction: column;
  }

  .admin-sidebar {
    position: static;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--spacing-lg);
  }

  .admin-main {
    margin-left: 0;
  }

  .sidebar-nav {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
  }

  .sidebar-nav-item {
    margin-bottom: 0;
    flex: 1;
    min-width: 150px;
  }

  .admin-header {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: flex-start;
  }

  .page-header-top {
    flex-direction: column;
  }

  .page-header-actions {
    flex-direction: column;
    width: 100%;
  }

  .page-header-actions .btn {
    width: 100%;
  }

  .admin-content {
    padding: var(--spacing-lg);
  }

  .three-column {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: var(--spacing-lg);
  }

  .hero-title {
    font-size: 1.5rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .page-header {
    margin-bottom: var(--spacing-lg);
  }

  .section {
    margin-bottom: var(--spacing-lg);
  }
}

/* Print Styles */
@media print {
  .admin-sidebar,
  .admin-header,
  .page-header-actions,
  .no-print {
    display: none;
  }

  .admin-layout {
    flex-direction: column;
  }

  .admin-main {
    margin-left: 0;
  }

  .admin-content {
    padding: 0;
  }
}