/* ============================================
   PRO ALI SMART Audit Copilot — Layout System
   ============================================
   Responsive layout with sidebar navigation,
   adaptive breakpoints, and grid system.
   ============================================ */

/* ============================================
   1. APP SHELL LAYOUT
   ============================================ */
.app-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  grid-template-rows: var(--header-height) 1fr;
  grid-template-areas:
    "sidebar header"
    "sidebar main";
  min-height: 100vh;
  transition: grid-template-columns var(--transition-base);
}

.app-layout.sidebar-collapsed {
  grid-template-columns: var(--sidebar-collapsed) 1fr;
}

/* ============================================
   2. HEADER
   ============================================ */
.app-header {
  grid-area: header;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  background: var(--color-surface);
  backdrop-filter: blur(var(--glass-blur));
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-sticky);
  position: sticky;
  top: 0;
  height: var(--header-height);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

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

.header-search {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-glass);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  min-width: 280px;
  transition: all var(--transition-fast);
}

.header-search:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
  min-width: 360px;
}

.header-search input {
  border: none;
  background: transparent;
  flex: 1;
  font-size: var(--text-sm);
  color: var(--color-text);
}

.header-search input::placeholder {
  color: var(--color-text-tertiary);
}

.header-search .search-icon {
  color: var(--color-text-tertiary);
  flex-shrink: 0;
}

/* ── Header Actions ── */
.header-notification {
  position: relative;
}

.header-notification .notification-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 18px;
  height: 18px;
  background: var(--color-danger);
  color: var(--color-white);
  font-size: 10px;
  font-weight: var(--weight-bold);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-surface);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--color-glass);
  color: var(--color-accent);
}

/* ============================================
   3. SIDEBAR NAVIGATION
   ============================================ */
.app-sidebar {
  grid-area: sidebar;
  background: var(--color-surface);
  backdrop-filter: blur(var(--glass-blur-heavy));
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: var(--z-fixed);
  transition: width var(--transition-base);
}

/* ── Logo Area ── */
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  flex-shrink: 0;
  text-decoration: none;
  color: inherit;
  transition: opacity var(--transition-fast);
}

.sidebar-logo:hover {
  opacity: 0.9;
}

.sidebar-logo .logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 18px;
  font-weight: var(--weight-extrabold);
  flex-shrink: 0;
}

.sidebar-logo .logo-text {
  display: flex;
  flex-direction: column;
  white-space: nowrap;
  overflow: hidden;
}

.sidebar-logo .logo-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-text);
  line-height: 1.2;
}

.sidebar-logo .logo-subtitle {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  line-height: 1.2;
}

/* ── Navigation Links ── */
.sidebar-nav {
  flex: 1;
  padding: var(--space-4) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sidebar-section {
  margin-bottom: var(--space-4);
}

.sidebar-section-title {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-2) var(--space-3);
  margin-bottom: var(--space-1);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.nav-item:hover {
  background: var(--color-glass);
  color: var(--color-text);
}

.nav-item.active {
  background: var(--color-accent-50);
  color: var(--color-accent);
  font-weight: var(--weight-semibold);
}

.nav-item .nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.nav-item .nav-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-item .nav-badge {
  padding: 2px 8px;
  font-size: 10px;
  font-weight: var(--weight-bold);
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--radius-full);
}

/* ── Sidebar Footer ── */
.sidebar-footer {
  padding: var(--space-4) var(--space-3);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sidebar-user:hover {
  background: var(--color-glass);
}

.sidebar-user-info {
  flex: 1;
  overflow: hidden;
}

.sidebar-user-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-role {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
}

/* ── Sidebar Collapsed State ── */
.sidebar-collapsed .sidebar-logo .logo-text,
.sidebar-collapsed .sidebar-section-title,
.sidebar-collapsed .nav-item .nav-label,
.sidebar-collapsed .nav-item .nav-badge,
.sidebar-collapsed .sidebar-user-info {
  display: none;
}

.sidebar-collapsed .sidebar-logo {
  justify-content: center;
  padding: var(--space-5) var(--space-2);
}

.sidebar-collapsed .nav-item {
  justify-content: center;
  padding: var(--space-3);
}

.sidebar-collapsed .sidebar-user {
  justify-content: center;
}

/* ============================================
   4. MAIN CONTENT
   ============================================ */
.app-main {
  grid-area: main;
  padding: var(--space-6);
  overflow-y: auto;
  min-height: calc(100vh - var(--header-height));
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.page-title {
  font-size: var(--text-h2);
  font-weight: var(--weight-bold);
  color: var(--color-text);
}

.page-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  margin-top: var(--space-1);
}

/* ============================================
   5. GRID SYSTEM
   ============================================ */
.grid {
  display: grid;
  gap: var(--space-6);
}

.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-auto {
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

/* ── Flex Utilities ── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ============================================
   6. RESPONSIVE BREAKPOINTS
   ============================================ */

/* ── Tablet (< 1200px) ── */
@media (max-width: 1199px) {
  .app-layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "header"
      "main";
  }

  .app-sidebar {
    position: fixed;
    left: -100%;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    z-index: var(--z-fixed);
    transition: left var(--transition-base);
  }

  .app-sidebar.open {
    left: 0;
  }

  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--color-overlay);
    z-index: calc(var(--z-fixed) - 1);
  }

  .app-sidebar.open ~ .sidebar-overlay,
  .sidebar-overlay.active {
    display: block;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }

  .header-search {
    min-width: 200px;
  }

  .header-search:focus-within {
    min-width: 280px;
  }
}

/* ── Mobile (< 768px) ── */
@media (max-width: 767px) {
  :root {
    --container-padding: var(--space-4);
    --text-display: 2.25rem;
    --text-h1: 1.75rem;
    --text-h2: 1.5rem;
    --text-h3: 1.25rem;
  }

  .app-main {
    padding: var(--space-4);
    padding-bottom: calc(var(--space-4) + 72px); /* space for bottom nav */
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .grid-5 {
    grid-template-columns: 1fr;
  }

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

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-search {
    display: none;
  }

  /* ── Mobile Bottom Navigation ── */
  .bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: var(--color-surface);
    backdrop-filter: blur(var(--glass-blur-heavy));
    border-top: 1px solid var(--color-border);
    z-index: var(--z-fixed);
    align-items: center;
    justify-content: space-around;
    padding: 0 var(--space-2);
    padding-bottom: env(safe-area-inset-bottom, 0);
  }

  .bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2);
    border-radius: var(--radius-md);
    color: var(--color-text-tertiary);
    font-size: 10px;
    font-weight: var(--weight-medium);
    text-decoration: none;
    transition: all var(--transition-fast);
    min-width: 56px;
  }

  .bottom-nav-item .nav-icon {
    font-size: 22px;
  }

  .bottom-nav-item.active {
    color: var(--color-accent);
  }

  .bottom-nav-item:hover {
    color: var(--color-text);
  }

  .toast-container {
    right: var(--space-4);
    left: var(--space-4);
  }

  .toast {
    min-width: auto;
    width: 100%;
  }

  .modal {
    width: 95%;
    max-height: 90vh;
    padding: var(--space-6);
  }
}

/* ── Desktop hide helpers ── */
.mobile-menu-toggle {
  display: none;
}

.bottom-nav {
  display: none;
}

@media (max-width: 1199px) {
  .mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
  }

  .mobile-menu-toggle:hover {
    background: var(--color-glass);
    color: var(--color-text);
  }
}

@media (max-width: 767px) {
  .bottom-nav {
    display: flex;
  }

  .desktop-only {
    display: none !important;
  }
}

@media (min-width: 768px) {
  .mobile-only {
    display: none !important;
  }
}

/* ── 3D Icon Image Styles ── */
.nav-icon img,
.bottom-nav-item .nav-icon img,
.kpi-icon img,
.activity-icon img,
.action-icon img,
.ws-tab-nav-item img,
.ws-sub-panel-title img,
.ws-hub-card-icon img,
.upload-icon img,
.ev-icon img,
.process-icon img,
.feature-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  vertical-align: middle;
  display: inline-block;
}

/* Adjustments for specific contexts so they align nicely and have appropriate sizing */
.nav-icon img {
  max-width: 18px;
  max-height: 18px;
}

.bottom-nav-item .nav-icon img {
  max-width: 20px;
  max-height: 20px;
}

.ws-tab-nav-item img {
  width: 16px;
  height: 16px;
  margin-right: 6px;
}

.ws-sub-panel-title img {
  width: 18px;
  height: 18px;
  margin-right: 6px;
}

.ws-hub-card-icon img {
  width: 48px;
  height: 48px;
}

.upload-icon img {
  width: 32px;
  height: 32px;
}

.ev-icon img {
  width: 20px;
  height: 20px;
}

.btn-img-icon {
  width: 16px;
  height: 16px;
  object-fit: contain;
  vertical-align: middle;
  margin-right: 4px;
}