/* ==============================================
   Layout Styles
   Header, sidebar, main content grid, and positioning
   ============================================== */

/* Root Layout Container */
html,
body {
  height: 100%;
  width: 100%;
}

/* Main App Container - Flexbox Grid */
.app-container {
  display: flex;
  height: calc(100vh - var(--header-height));
  width: 100%;
  position: relative;
}

/* Header Styles */
header,
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-primary-dark);
  color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  box-shadow: var(--shadow-card);
  z-index: var(--z-sticky);
  gap: var(--spacing-lg);
}

/* Header Logo */
.header-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-h3);
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition-base);
  flex-shrink: 0;
}

.header-logo:hover {
  color: var(--color-accent-yellow);
}

.header-logo:focus {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--radius-button);
}

.header-logo img {
  height: 100px;
  width: auto;
  display: block;
}

.header-logo-icon {
  width: 24px;
  height: 24px;
}

/* Header Left Section */
.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 0 0 auto;
}

/* Sidebar Toggle Button */
.sidebar-toggle {
  background: transparent;
  color: var(--color-primary-light);
  border: 2px solid transparent;
  padding: var(--spacing-sm);
  cursor: pointer;
  border-radius: var(--radius-button);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  width: 40px;
  height: 40px;
}

.sidebar-toggle:hover {
  background-color: rgba(244, 196, 48, 0.1);
  color: var(--color-accent-yellow);
}

.sidebar-toggle:focus {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
}

.sidebar-toggle svg {
  width: 20px;
  height: 20px;
}

/* Header Right Section */
.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 0 0 auto;
  margin-left: auto;
}

/* User Dropdown (Placeholder) */
.user-dropdown {
  position: relative;
}

.user-dropdown-toggle {
  background: transparent;
  color: var(--color-primary-light);
  border: 2px solid transparent;
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  border-radius: var(--radius-button);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-base);
  font-weight: var(--font-weight-medium);
}

.user-dropdown-toggle:hover {
  background-color: rgba(244, 196, 48, 0.1);
  color: var(--color-accent-yellow);
}

.user-dropdown-toggle:focus {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
}

.user-dropdown-toggle svg {
  width: 18px;
  height: 18px;
}

/* Sidebar Navigation */
nav,
.sidebar {
  position: fixed;
  left: 0;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  width: var(--sidebar-width);
  background-color: var(--color-primary-light);
  border-right: 1px solid var(--color-border-gray);
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--spacing-lg) 0;
  transition: width var(--transition-base), transform var(--transition-base);
  z-index: var(--z-sticky);
}

nav.collapsed,
.sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}

/* Sidebar - Mobile Behavior */
@media (max-width: 768px) {
  nav,
  .sidebar {
    transform: translateX(-100%);
    box-shadow: var(--shadow-card-hover);
  }

  nav.open,
  .sidebar.open {
    transform: translateX(0);
  }
}

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

/* Sidebar Navigation Item */
.sidebar-nav-item {
  margin: 0;
  padding: 0;
}

.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px var(--spacing-lg);
  color: var(--color-text-dark);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-body);
  transition: all var(--transition-base);
  position: relative;
}

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

.sidebar-nav-link:focus {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
}

/* Active Navigation Link */
.sidebar-nav-link.active {
  background-color: var(--color-bg-active);
  color: var(--color-primary-dark);
  border-left: 3px solid var(--color-primary-dark);
  padding-left: calc(var(--spacing-lg) - 3px);
  font-weight: var(--font-weight-semibold);
}

/* Sidebar Icon */
.sidebar-nav-link svg,
.sidebar-nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Sidebar Label */
.sidebar-nav-label {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: opacity var(--transition-base);
}

/* Collapsed Sidebar - Hide Labels */
nav.collapsed .sidebar-nav-label,
.sidebar.collapsed .sidebar-nav-label {
  display: none;
}

/* Collapsed Sidebar - Center Icons */
nav.collapsed .sidebar-nav-link,
.sidebar.collapsed .sidebar-nav-link {
  justify-content: center;
  padding: 12px var(--spacing-sm);
}

/* Coming Soon Badge */
.coming-soon-badge {
  display: inline-block;
  background-color: var(--color-border-gray);
  color: var(--color-text-muted);
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: auto;
  text-transform: uppercase;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.5px;
}

/* Coming Soon State */
.sidebar-nav-link.coming-soon {
  opacity: 0.6;
  cursor: not-allowed;
  color: var(--color-text-muted);
}

.sidebar-nav-link.coming-soon:hover {
  background-color: transparent;
  color: var(--color-text-muted);
}

/* Main Content Area */
main,
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  margin-top: var(--header-height);
  padding: var(--main-content-padding);
  background-color: var(--color-background);
  min-height: calc(100vh - var(--header-height));
  overflow-y: auto;
  transition: margin-left var(--transition-base);
}

main.sidebar-collapsed,
.main-content.sidebar-collapsed {
  margin-left: var(--sidebar-collapsed-width);
}

/* No sidebar (auth pages) — center content */
main.no-sidebar,
.main-content.no-sidebar {
  margin-left: 0;
  display: flex;
  justify-content: center;
}

.main-content.no-sidebar > * {
  width: 100%;
  max-width: 500px;
}

/* Main Content with Collapsed Sidebar - Mobile */
@media (max-width: 768px) {
  main,
  .main-content {
    margin-left: 0;
    margin-top: var(--header-height);
  }

  main.sidebar-open,
  .main-content.sidebar-open {
    margin-left: 0;
  }
}

/* Page Container */
.page {
  max-width: 1400px;
  margin: 0 auto;
}

/* Page Header */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-gray);
}

.page-header h1 {
  margin-bottom: var(--spacing-sm);
}

.page-header p {
  color: var(--color-text-muted);
  margin: 0;
}

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

/* Breadcrumb Navigation */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-small);
}

.breadcrumb-item {
  color: var(--color-text-muted);
}

.breadcrumb-item a {
  color: var(--color-primary-dark);
  transition: color var(--transition-base);
}

.breadcrumb-item a:hover {
  color: var(--color-accent-yellow);
}

.breadcrumb-separator {
  color: var(--color-border-gray);
}

.breadcrumb-item.active {
  color: var(--color-text-dark);
  font-weight: var(--font-weight-semibold);
}

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

.section-title {
  font-size: var(--font-size-h2);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-dark);
  font-weight: var(--font-weight-semibold);
}

/* Responsive Design */
@media (max-width: 1200px) {
  .main-content,
  main {
    padding: var(--spacing-md);
  }
}

@media (max-width: 768px) {
  .header {
    padding: 0 var(--spacing-md);
  }

  .header-logo {
    font-size: var(--font-size-body);
  }

  .header-logo-icon {
    width: 20px;
    height: 20px;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 0 var(--spacing-sm);
    gap: var(--spacing-sm);
  }

  .header-right {
    gap: var(--spacing-xs);
  }

  .user-dropdown-toggle {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}