/* ==========================================================================
   Shopify Polaris-inspired Global Layout & Base Styles
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
@import url('variables.css');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background-color: var(--bg-app);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
}

a {
  color: var(--action-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  text-decoration: underline;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

img, svg {
  vertical-align: middle;
}

/* ==========================================================================
   App Shell Layout
   ========================================================================== */

.app-container {
  display: flex;
  min-height: 100vh;
  position: relative;
}

/* ==========================================================================
   Sidebar Navigation (Shopify Admin Style)
   ========================================================================== */

.app-sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-surface-secondary);
  border-right: 1px solid var(--border-default);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: var(--z-sidebar);
  transition: transform var(--transition-base), width var(--transition-base);
}

.sidebar-header {
  height: var(--header-height);
  padding: 0 var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-md);
  color: var(--text-primary);
  text-decoration: none;
}

.brand-icon {
  width: 30px;
  height: 30px;
  background: linear-gradient(135deg, var(--primary) 0%, #005e46 100%);
  color: #fff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-sm);
  box-shadow: 0 2px 4px rgba(0, 128, 96, 0.25);
}

.brand-store-tag {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  font-weight: var(--font-weight-regular);
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-3) var(--space-2);
  overflow-y: auto;
  overflow-x: hidden;
}

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

.nav-section-title {
  padding: var(--space-1) var(--space-3);
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-subdued);
}

.nav-item {
  margin-bottom: 2px;
}

.nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
}

.nav-link:hover {
  background-color: var(--bg-surface-hover);
  text-decoration: none;
  color: var(--text-primary);
}

.nav-link.active {
  background-color: #e4e5e7;
  color: var(--text-primary);
  font-weight: var(--font-weight-semibold);
}

.nav-link-content {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav-link svg {
  width: 20px;
  height: 20px;
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

.nav-link:hover svg,
.nav-link.active svg {
  color: var(--text-primary);
}

.nav-badge {
  font-size: var(--font-size-xs);
  padding: 1px 7px;
  border-radius: var(--radius-full);
  background-color: var(--status-neutral-bg);
  color: var(--text-secondary);
  font-weight: var(--font-weight-semibold);
}

.nav-badge.active-badge {
  background-color: var(--primary-light);
  color: var(--primary);
}

.sidebar-footer {
  padding: var(--space-3) var(--space-3);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.user-quick-profile {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
  cursor: pointer;
}

.user-quick-profile:hover {
  background-color: var(--bg-surface-hover);
}

.user-avatar-sm {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background-color: #e3e5e8;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-xs);
  object-fit: cover;
}

.user-info-text {
  flex: 1;
  min-width: 0;
}

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

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

/* ==========================================================================
   Main Content Area
   ========================================================================== */

.app-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ==========================================================================
   Top Header (Shopify Admin Style)
   ========================================================================== */

.app-header {
  height: var(--header-height);
  background-color: var(--header-bg);
  color: var(--header-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  max-width: 560px;
}

.mobile-menu-btn {
  display: none;
  background: none;
  color: #fff;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
}

.global-search-container {
  position: relative;
  width: 100%;
}

.global-search-input {
  width: 100%;
  height: 36px;
  background-color: var(--header-surface);
  border: 1px solid var(--header-border);
  border-radius: var(--radius-md);
  padding: 0 var(--space-3) 0 36px;
  color: var(--header-text);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.global-search-input::placeholder {
  color: var(--text-subdued);
}

.global-search-input:focus {
  outline: none;
  background-color: var(--bg-surface-hover);
  border-color: var(--border-strong);
  box-shadow: 0 0 0 1px var(--border-strong);
}

.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-subdued);
  pointer-events: none;
  width: 16px;
  height: 16px;
}

.search-shortcut {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background-color: var(--header-border);
  color: var(--header-text);
  font-size: 11px;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  pointer-events: none;
}

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

.header-icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  position: relative;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.header-icon-btn:hover {
  background-color: var(--header-surface);
  color: var(--header-text);
}

.notification-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  background-color: var(--primary);
  border: 2px solid var(--header-bg);
  border-radius: 50%;
}

html[data-theme="dark"] .nav-link.active {
  background-color: var(--bg-surface-active);
}

html[data-theme="dark"] .notif-unread {
  background-color: var(--status-success-bg);
}

html[data-theme="dark"] .notif-unread:hover {
  background-color: var(--primary-light);
}

.notif-unread {
  background-color: #f0fdf4;
  border-left: 3px solid #008060 !important;
}

.notif-unread:hover {
  background-color: #dcfce7;
}

.header-user-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 4px 8px;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.header-user-btn:hover {
  background-color: var(--header-surface);
}

.header-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--action-secondary) 100%);
  color: var(--text-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-semibold);
  font-size: 12px;
  object-fit: cover;
}

.header-username {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--header-text);
}

/* ==========================================================================
   Page Content Area & Headers
   ========================================================================== */

.page-container {
  flex: 1;
  padding: var(--space-6) var(--space-8);
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
}

.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-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.page-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  line-height: var(--line-height-tight);
}

.page-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

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

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.breadcrumb-nav a {
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.breadcrumb-nav a:hover {
  color: var(--text-primary);
  text-decoration: none;
}

/* ==========================================================================
   Dropdowns & Overlay Backdrops
   ========================================================================== */

.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  width: 260px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-dropdown);
  padding: var(--space-2);
  z-index: var(--z-dropdown);
  display: none;
  animation: dropdownFadeIn 150ms ease-out;
}

.dropdown-menu.show {
  display: block;
}

@keyframes dropdownFadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.dropdown-header {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--text-subdued);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-1);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--bg-surface-hover);
  text-decoration: none;
}

.dropdown-divider {
  height: 1px;
  background-color: var(--border-subtle);
  margin: var(--space-1) 0;
}

/* Drawer overlay for mobile */
.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: calc(var(--z-sidebar) - 1);
  display: none;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.sidebar-overlay.active {
  display: block;
  opacity: 1;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 1024px) {
  .app-sidebar {
    transform: translateX(-100%);
  }

  .app-sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-modal);
  }

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

  .mobile-menu-btn {
    display: inline-flex;
  }

  .page-container {
    padding: var(--space-5) var(--space-4);
  }
}

@media (max-width: 640px) {
  .app-header {
    padding: 0 var(--space-3);
  }

  .header-left {
    flex: 1 1 auto;
    min-width: 0;
    max-width: none;
  }

  .global-search-container {
    min-width: 0;
    width: 100%;
  }

  .global-search-input {
    font-size: 12.5px;
    padding-right: 12px;
  }

  .header-right {
    gap: var(--space-2);
  }

  .header-icon-btn {
    width: 32px;
    height: 32px;
  }

  #notifDropdown {
    position: fixed !important;
    top: calc(var(--header-height) + 8px) !important;
    left: 50% !important;
    right: auto !important;
    transform: translateX(-50%);
    width: calc(100vw - 16px) !important;
    max-width: 340px !important;
  }

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

  .page-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .header-username {
    display: none;
  }

  .search-shortcut {
    display: none;
  }
}

@media (max-width: 480px) {
  .header-left {
    gap: var(--space-2);
  }

  .global-search-input {
    height: 34px;
  }

  .search-icon {
    left: 8px;
    width: 14px;
    height: 14px;
  }
}