/* ============================================
   Layout Styles - Sidebar, Header, Main Content
   ============================================ */

/* ============================================
   Sidebar Base Styles
   ============================================ */
.sidebar {
  width: var(--sidebar-width);
  background: linear-gradient(180deg, var(--bg-sidebar) 0%, var(--bg-sidebar-dark) 100%);
  color: var(--text-sidebar);
  flex-shrink: 0;
  position: fixed;
  height: 100vh;
  height: 100dvh; /* Dynamic viewport height for mobile */
  overflow-y: auto;
  overflow-x: hidden;
  z-index: var(--z-fixed);
  transition: transform var(--transition-slow), width var(--transition-slow);
  box-shadow: var(--shadow-lg);
  top: 0;
  left: 0;
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
}

.sidebar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Sidebar Header */
.sidebar-header {
  padding: var(--spacing-6);
  background: var(--bg-sidebar-header);
  border-bottom: 1px solid var(--border-sidebar);
  min-height: var(--sidebar-header-height);
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.sidebar-header > div {
  width: 100%;
}

.sidebar-header h4 {
  color: var(--text-sidebar);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
  margin: 0;
  letter-spacing: -0.02em;
}

.sidebar-logo {
  height: 32px;
  width: auto;
  max-width: 200px;
  margin-bottom: var(--spacing-2);
  display: block;
}

.sidebar-header small {
  color: var(--text-sidebar-muted);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-normal);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: var(--spacing-1);
}

/* ============================================
   Main Content Area
   ============================================ */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  min-height: 100vh;
  min-height: 100dvh; /* Dynamic viewport height for mobile */
  transition: margin-left var(--transition-slow);
  width: calc(100% - var(--sidebar-width));
  overflow-x: hidden;
}

/* ============================================
   Top Header
   ============================================ */
.top-header {
  background: var(--header-bg);
  padding: 0 var(--spacing-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--header-shadow);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  min-height: var(--header-height);
  border-bottom: 1px solid var(--border-color-light);
}

.top-header .btn-link {
  color: var(--text-secondary);
  padding: var(--spacing-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.top-header .btn-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  text-decoration: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.header-actions .dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--text-primary);
  padding: var(--spacing-2) var(--spacing-3);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.header-actions .dropdown-toggle:hover {
  background-color: var(--bg-tertiary);
  text-decoration: none;
}

/* ============================================
   Content Area
   ============================================ */
.content-area {
  padding: var(--content-padding);
  flex: 1;
  max-width: var(--content-max-width);
  width: 100%;
  margin: 0 auto;
}

/* ============================================
   Sidebar Overlay (Mobile)
   ============================================ */
.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-overlay);
  z-index: var(--z-modal-backdrop);
  backdrop-filter: blur(2px);
  animation: fadeIn var(--transition-base);
  touch-action: none; /* Prevent scrolling on touch devices */
}

/* ============================================
   Page Header Styles
   ============================================ */
.page-header {
  margin-bottom: var(--spacing-6);
}

.page-header h2 {
  margin: 0 0 var(--spacing-2) 0;
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.page-header p {
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--font-size-base);
}

/* ============================================
   Responsive Styles
   ============================================ */
@media (max-width: 991.98px) {
  .sidebar {
    transform: translateX(-100%);
    z-index: var(--z-modal);
    transition: transform 0.3s ease-in-out;
    width: 280px;
    max-width: 85vw;
  }

  .sidebar:not(.collapsed) {
    transform: translateX(0);
  }

  .sidebar-overlay {
    display: block !important;
  }

  .sidebar-overlay:not([style*="display: none"]) {
    display: block !important;
  }

  .main-content {
    margin-left: 0 !important;
    width: 100%;
  }

  .top-header {
    padding: 0 var(--spacing-4);
    min-height: 56px;
  }

  .content-area {
    padding: var(--spacing-4);
  }

  .page-header {
    margin-bottom: var(--spacing-4);
  }

  .page-header h2 {
    font-size: var(--font-size-2xl);
  }

  .sidebar-close-btn {
    display: flex !important;
  }
}

@media (max-width: 768px) {
  .content-area {
    padding: var(--spacing-3);
    overflow-x: hidden;
    max-width: 100%;
  }

  .page-header h2 {
    font-size: var(--font-size-xl);
  }

  .top-header {
    padding: 0 var(--spacing-3);
  }

  .header-actions .dropdown-toggle {
    font-size: var(--font-size-sm);
    padding: var(--spacing-1) var(--spacing-2);
  }

  .header-actions .btn-sm {
    font-size: var(--font-size-xs);
    padding: var(--spacing-1) var(--spacing-2);
  }

  .main-content {
    width: 100%;
    overflow-x: hidden;
  }
}

@media (max-width: 576px) {
  .content-area {
    padding: var(--spacing-2);
  }

  .card-body {
    padding: var(--spacing-4);
  }

  .card-header {
    padding: var(--spacing-3) var(--spacing-4);
  }

  .table {
    font-size: var(--font-size-sm);
  }

  .table th,
  .table td {
    padding: var(--spacing-2) var(--spacing-3);
  }

  .btn {
    min-height: 44px; /* Touch target size */
    padding: var(--spacing-2) var(--spacing-3);
  }

  .btn-sm {
    min-height: 36px;
  }
}

@media (min-width: 992px) {
  .sidebar.collapsed {
    transform: translateX(-100%);
  }

  .sidebar.collapsed ~ .main-content {
    margin-left: 0;
  }
  
  /* Keep toggle button visible on desktop to reopen sidebar */
  .sidebar-toggle {
    display: flex;
  }
}

/* ============================================
   Layout Specific - Super Admin
   ============================================ */
.superadmin-layout {
  display: flex;
  min-height: 100vh;
}

/* ============================================
   Layout Specific - Company
   ============================================ */
.company-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar-toggle {
  color: var(--text-secondary);
  padding: var(--spacing-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  background: transparent;
  border: none;
  cursor: pointer;
  min-width: 40px;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-toggle:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
}

.sidebar-toggle:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

/* Sidebar Close Button */
.sidebar-close-btn {
  color: var(--text-sidebar-muted) !important;
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-lg);
  min-width: 36px;
  min-height: 36px;
  display: none; /* Hidden by default, shown on mobile */
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  opacity: 0.7;
}

.sidebar-close-btn:hover {
  color: var(--text-sidebar) !important;
  background-color: var(--bg-hover);
  transform: scale(1.1);
  opacity: 1;
}

.sidebar-close-btn:focus {
  outline: 2px solid var(--text-sidebar);
  outline-offset: 2px;
  opacity: 1;
}

.sidebar-close-btn:active {
  transform: scale(0.95);
}

.sidebar-close-btn i {
  margin: 0;
  font-size: 1.25rem;
}

/* ============================================
   Empty Layout
   ============================================ */
.empty-layout {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
}