/**
 * Layout Shell CSS
 * Consolidated responsive layout system for header, sidebar, footer, and main content
 * CRITICAL: Uses !important to override conflicts in main.css and protect-navbar.css
 *
 * @package Trippy's Food Corporation
 * @version 2.1
 */

/* ============================================================================
   CSS Custom Properties
   ========================================================================= */
:root {
  /* Sidebar dimensions */
  --sidebar-width-expanded: 16rem;
  --sidebar-width-collapsed: 4rem;

  /* Header dimensions - MUST match protect-navbar.css */
  --header-height: 80px;

  /* Footer dimensions - MUST match main.css */
  --footer-height: 70px;

  /* Transitions */
  --layout-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index layers */
  --z-sidebar: 40;
  --z-header: 50;
  --z-footer: 30;
  --z-overlay: 35;
  --z-dropdown: 9999;

  /* Breakpoints */
  --breakpoint-mobile: 768px;
}

/* ============================================================================
   Sidebar Layout - State Management Only
   Base styles in protect-navbar.css (lines 45-66) with !important
   ========================================================================= */

/* Sidebar collapsed state (desktop) */
#sidebar.collapsed {
  width: var(--sidebar-width-collapsed) !important;
}

/* Sidebar mobile: slide-in from left, positioned below header */
@media (max-width: 767px) {
  #sidebar {
    top: var(--header-height) !important;
    height: calc(100vh - var(--header-height)) !important;
    transform: translateX(-100%) !important;
  }

  #sidebar.mobile-open {
    transform: translateX(0) !important;
  }

  /* Remove collapsed state on mobile */
  #sidebar.collapsed {
    width: var(--sidebar-width-expanded) !important;
  }
}

/* ============================================================================
   Header Layout - Override All Conflicts
   ========================================================================= */
#main-header {
  position: fixed !important;
  top: 0 !important;
  right: 0 !important;
  left: var(--sidebar-width-expanded) !important;
  height: var(--header-height) !important;
  width: calc(100% - var(--sidebar-width-expanded)) !important;
  z-index: var(--z-header) !important;
  transition: var(--layout-transition) !important;
}

/* Header when sidebar is collapsed (desktop) */
body.sidebar-collapsed #main-header {
  left: var(--sidebar-width-collapsed) !important;
  width: calc(100% - var(--sidebar-width-collapsed)) !important;
}

/* Header initial collapsed state (prevents FOUC) */
.sidebar-initially-collapsed #main-header {
  left: var(--sidebar-width-collapsed) !important;
  width: calc(100% - var(--sidebar-width-collapsed)) !important;
}

/* Header mobile: full width */
@media (max-width: 767px) {
  #main-header {
    left: 0 !important;
    width: 100% !important;
  }

  body.sidebar-collapsed #main-header,
  .sidebar-initially-collapsed #main-header {
    left: 0 !important;
    width: 100% !important;
  }
}

/* ============================================================================
   Main Content Layout - Override ALL Conflicts
   Overrides: main.css (lines 39-68) and protect-navbar.css (lines 203-231)
   ========================================================================= */
#main-content,
main#main-content {
  margin-left: var(--sidebar-width-expanded) !important;
  padding-top: var(--header-height) !important;
  padding-bottom: var(--footer-height) !important;
  min-height: 100vh !important;
  transition: var(--layout-transition) !important;
  background-color: #f9fafb !important;
  flex: 1 !important;
}

/* Main content when sidebar is collapsed (desktop) */
body.sidebar-collapsed #main-content,
body.sidebar-collapsed main#main-content {
  margin-left: var(--sidebar-width-collapsed) !important;
}

/* Main content initial collapsed state (prevents FOUC) */
.sidebar-initially-collapsed #main-content,
.sidebar-initially-collapsed main#main-content {
  margin-left: var(--sidebar-width-collapsed) !important;
}

/* Main content mobile: no left margin */
@media (max-width: 767px) {
  #main-content,
  main#main-content {
    margin-left: 0 !important;
    padding-top: var(--header-height) !important;
    padding-bottom: var(--footer-height) !important;
  }

  body.sidebar-collapsed #main-content,
  body.sidebar-collapsed main#main-content,
  .sidebar-initially-collapsed #main-content,
  .sidebar-initially-collapsed main#main-content {
    margin-left: 0 !important;
  }
}

/* Dark mode main content */
[data-theme="dark"] #main-content,
[data-theme="dark"] main#main-content {
  background: linear-gradient(180deg, #0f172a 0%, #111827 100%) !important;
}

/* ============================================================================
   Footer Layout - Override All Positioning
   ========================================================================= */
#main-footer {
  position: fixed !important;
  bottom: 0 !important;
  right: 0 !important;
  left: var(--sidebar-width-expanded) !important;
  height: var(--footer-height) !important;
  width: calc(100% - var(--sidebar-width-expanded)) !important;
  z-index: var(--z-footer) !important;
  transition: var(--layout-transition) !important;
}

/* Footer when sidebar is collapsed (desktop) */
body.sidebar-collapsed #main-footer {
  left: var(--sidebar-width-collapsed) !important;
  width: calc(100% - var(--sidebar-width-collapsed)) !important;
}

/* Footer initial collapsed state (prevents FOUC) */
.sidebar-initially-collapsed #main-footer {
  left: var(--sidebar-width-collapsed) !important;
  width: calc(100% - var(--sidebar-width-collapsed)) !important;
}

/* Footer mobile: full width */
@media (max-width: 767px) {
  #main-footer {
    left: 0 !important;
    width: 100% !important;
  }

  body.sidebar-collapsed #main-footer,
  .sidebar-initially-collapsed #main-footer {
    left: 0 !important;
    width: 100% !important;
  }
}

/* ============================================================================
   Mobile Overlay - Conflicts with main.css (lines 313-329)
   ========================================================================= */
.sidebar-overlay {
  display: none !important;
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  background-color: rgba(0, 0, 0, 0.5) !important;
  z-index: var(--z-overlay) !important;
  opacity: 0 !important;
  transition: opacity 0.3s ease-in-out !important;
}

@media (max-width: 767px) {
  .sidebar-overlay.active {
    display: block !important;
    opacity: 1 !important;
  }
}

/* ============================================================================
   Hamburger Menu Button (Mobile)
   ========================================================================= */
.hamburger-button {
  display: none;
  position: relative;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: transparent;
  border: 1px solid rgba(226, 232, 240, 0.6);
  border-radius: 0.5rem;
  cursor: pointer;
  transition: var(--layout-transition);
}

.hamburger-button:hover {
  background: rgba(248, 250, 252, 0.5);
}

.hamburger-button span {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: var(--layout-transition);
  position: absolute;
  left: 8px;
}

.hamburger-button span:nth-child(1) {
  top: 10px;
}

.hamburger-button span:nth-child(2) {
  top: 18px;
}

.hamburger-button span:nth-child(3) {
  top: 26px;
}

/* Hamburger animation when sidebar is open */
.hamburger-button.active span:nth-child(1) {
  transform: rotate(45deg);
  top: 18px;
}

.hamburger-button.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-button.active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 18px;
}

@media (max-width: 767px) {
  .hamburger-button {
    display: block;
  }
}

/* ============================================================================
   Dark Mode Support
   ========================================================================= */
[data-theme="dark"] .hamburger-button {
  border-color: rgba(71, 85, 105, 0.6);
}

[data-theme="dark"] .hamburger-button:hover {
  background: rgba(30, 41, 59, 0.5);
}

/* ============================================================================
   Print Styles - Override main.css (lines 417-439)
   ========================================================================= */
@media print {
  #sidebar,
  #main-header,
  #main-footer,
  .sidebar-overlay,
  .hamburger-button {
    display: none !important;
  }

  #main-content,
  main#main-content {
    margin-left: 0 !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
  }
}

/* ============================================================================
   Accessibility - Reduced Motion - Override main.css (lines 522-528)
   ========================================================================= */
@media (prefers-reduced-motion: reduce) {
  #sidebar,
  #main-header,
  #main-content,
  main#main-content,
  #main-footer,
  .sidebar-overlay,
  .hamburger-button,
  .hamburger-button span {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ============================================================================
   Utility Classes
   ========================================================================= */
.sidebar-hidden-text {
  opacity: 1;
  transition: opacity 0.2s ease-in-out;
}

#sidebar.collapsed .sidebar-hidden-text {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

/* Prevent text selection during transitions */
.no-select {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}