/* ============================================================
   dashboard.css — Layout + CSS Custom Properties (Design Tokens)
   Sherpa AI Admin Dashboard
   ============================================================ */

/* ----- Design Tokens ----- */
:root {
  /* Colors — Primary */
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-primary-light: #dbeafe;
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe; /* same as --color-primary-light — kept for semantic clarity */

  /* Colors — Extended palette (used by badge/stat variants) */
  --color-purple: #7c3aed;
  --color-purple-light: #ede9fe;
  --color-purple-dark: #6d28d9;
  --color-purple-border: #ddd6fe;
  --color-primary-700: #1d4ed8;

  /* Colors — Neutral */
  --color-bg: #f1f5f9;
  --color-surface: #ffffff;
  --color-text-primary: #0f172a;
  --color-text-secondary: #64748b;
  --color-text-tertiary: #94a3b8;
  --color-text-inverse: #ffffff;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-divider: #e2e8f0;

  /* Colors — Semantic */
  --color-success: #10b981;
  --color-success-light: #dcfce7;
  --color-success-dark: #16a34a;
  --color-warning: #f59e0b;
  --color-warning-light: #fef9c3;
  --color-warning-dark: #d97706;
  --color-danger: #ef4444;
  --color-danger-light: #fee2e2;
  --color-danger-dark: #dc2626;
  --color-info: #3b82f6;
  --color-info-light: #dbeafe;

  /* Colors — Sidebar */
  --color-sidebar-bg: #0f172a;
  --color-sidebar-hover: #1e293b;
  --color-sidebar-active: rgba(59, 130, 246, 0.12);
  --color-sidebar-text: #94a3b8;
  --color-sidebar-text-active: #f1f5f9;
  --color-sidebar-text-bright: #e2e8f0;
  --color-sidebar-border: #1e293b;
  --color-sidebar-item-active-bg: #334155;
  --color-sidebar-item-hover-bg: #293548;
  --color-sidebar-avatar-bg: #475569;
  --color-sidebar-email: #cbd5e1;

  /* Colors — Role badges */
  --color-role-superadmin: #7c3aed;
  --color-role-superadmin-bg: #ede9fe;
  --color-role-admin: #2563eb;
  --color-role-admin-bg: #dbeafe;
  --color-role-manager: #059669;
  --color-role-manager-bg: #d1fae5;

  /* Colors — Toast type backgrounds */
  --color-toast-success-bg: #ecfdf5;
  --color-toast-success-text: #065f46;
  --color-toast-error-bg: #fef2f2;
  --color-toast-error-text: #991b1b;
  --color-toast-warning-bg: #fffbeb;
  --color-toast-warning-text: #92400e;
  --color-toast-info-bg: #eff6ff;
  --color-toast-info-text: #1e40af;

  /* Colors — Modal */
  --color-modal-title: #111827;
  --color-modal-body: #4b5563;
  --color-modal-close: #9ca3af;
  --color-modal-cancel-text: #374151;
  --color-modal-cancel-border: #d1d5db;
  --color-modal-cancel-hover-bg: #f9fafb;

  /* Shadows */
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-card-hover: 0 4px 16px rgba(15, 23, 42, 0.1), 0 2px 6px rgba(15, 23, 42, 0.06);
  --shadow-dropdown: 0 8px 24px rgba(15, 23, 42, 0.12), 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-modal: 0 24px 64px rgba(15, 23, 42, 0.18), 0 8px 24px rgba(15, 23, 42, 0.1);
  --shadow-header: 0 1px 0 rgba(15, 23, 42, 0.08);

  /* Typography */
  --font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI',
    system-ui, sans-serif;
  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.8125rem; /* 13px */
  --font-size-md: 0.875rem;  /* 14px */
  --font-size-base: 1rem;    /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-base: 16px;
  --spacing-lg: 20px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;
  --spacing-3xl: 40px;
  --spacing-4xl: 48px;

  /* Layout */
  --sidebar-width: 260px;
  --sidebar-collapsed-width: 64px;
  --header-height: 64px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Z-index layers */
  --z-sidebar: 100;
  --z-header: 90;
  --z-dropdown: 200;
  --z-modal: 500;
  --z-toast: 600;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  line-height: 1.5;
  min-width: 1024px;
}

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

a:hover {
  color: var(--color-primary-hover);
}

/* Focus-visible for keyboard accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* ----- Dashboard Shell ----- */
.dashboard-shell {
  display: flex;
  min-height: 100vh;
}

/* ----- Sidebar ----- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background-color: var(--color-sidebar-bg);
  color: var(--color-sidebar-text);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sidebar);
  transition: width var(--transition-slow);
  overflow: hidden;
}

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

/* Sidebar — Logo / Brand */
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) var(--spacing-lg);
  height: var(--header-height);
  border-bottom: 1px solid var(--color-sidebar-border);
  flex-shrink: 0;
}

.sidebar-brand-logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.sidebar-brand-text {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text-inverse);
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--transition-base);
}

.sidebar.collapsed .sidebar-brand-text,
.sidebar.sidebar--collapsed .sidebar-brand-text {
  opacity: 0;
  width: 0;
}

/* Sidebar — User info */
.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-base) var(--spacing-lg);
  border-bottom: 1px solid var(--color-sidebar-border);
  flex-shrink: 0;
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 600;
  flex-shrink: 0;
}

.sidebar-user-info {
  overflow: hidden;
  white-space: nowrap;
  transition: opacity var(--transition-base);
}

.sidebar.collapsed .sidebar-user-info,
.sidebar.sidebar--collapsed .sidebar-user-info {
  opacity: 0;
  width: 0;
}

.sidebar-user-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-inverse);
}

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

/* Sidebar — Navigation */
.sidebar-nav {
  flex: 1;
  padding: var(--spacing-sm) 0;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-nav-section {
  padding: var(--spacing-md) var(--spacing-lg) var(--spacing-xs);
}

.sidebar-nav-section-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-tertiary);
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--transition-base);
}

.sidebar.collapsed .sidebar-nav-section-label,
.sidebar.sidebar--collapsed .sidebar-nav-section-label {
  opacity: 0;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-lg);
  margin: 2px var(--spacing-sm);
  border-radius: var(--radius-md);
  color: var(--color-sidebar-text);
  font-size: var(--font-size-md);
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-fast),
    color var(--transition-fast);
  white-space: nowrap;
  position: relative;
  border: none;
  background: none;
  width: calc(100% - var(--spacing-base));
  text-align: left;
}

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

.sidebar-nav-item.active {
  background-color: var(--color-sidebar-active);
  color: var(--color-primary);
}

.sidebar-nav-item.active::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--spacing-sm));
  top: 4px;
  bottom: 4px;
  width: 3px;
  background-color: var(--color-primary);
  border-radius: 0 2px 2px 0;
}

.sidebar-nav-item-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.8;
}

.sidebar-nav-item.active .sidebar-nav-item-icon {
  opacity: 1;
}

.sidebar-nav-item-label {
  overflow: hidden;
  transition: opacity var(--transition-base);
}

.sidebar.collapsed .sidebar-nav-item-label,
.sidebar.sidebar--collapsed .sidebar-nav-item-label {
  opacity: 0;
  width: 0;
}

.sidebar-nav-item-badge {
  margin-left: auto;
  background-color: var(--color-danger);
  color: var(--color-text-inverse);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
  line-height: 1.4;
}

.sidebar.collapsed .sidebar-nav-item-badge,
.sidebar.sidebar--collapsed .sidebar-nav-item-badge {
  display: none;
}

/* Sidebar — Footer / Logout */
.sidebar-footer {
  padding: var(--spacing-sm);
  border-top: 1px solid var(--color-sidebar-border);
  flex-shrink: 0;
}

.sidebar-logout {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: 0 var(--spacing-xs);
  border-radius: var(--radius-md);
  color: var(--color-sidebar-text);
  font-size: var(--font-size-md);
  font-weight: 500;
  cursor: pointer;
  transition: background-color var(--transition-fast),
    color var(--transition-fast);
  border: none;
  background: none;
  width: calc(100% - var(--spacing-sm));
  text-align: left;
  white-space: nowrap;
}

.sidebar-logout:hover {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--color-danger);
}

.sidebar-logout-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.sidebar-logout-label {
  overflow: hidden;
  transition: opacity var(--transition-base);
}

.sidebar.collapsed .sidebar-logout-label,
.sidebar.sidebar--collapsed .sidebar-logout-label {
  opacity: 0;
  width: 0;
}

/* Sidebar collapse toggle */
.sidebar-toggle {
  position: absolute;
  top: 50%;
  right: -12px;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: calc(var(--z-sidebar) + 1);
  transition: transform var(--transition-fast);
  color: var(--color-text-secondary);
  font-size: 12px;
}

.sidebar-toggle:hover {
  background-color: var(--color-primary-50);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.sidebar.collapsed .sidebar-toggle,
.sidebar.sidebar--collapsed .sidebar-toggle {
  transform: translateY(-50%) rotate(180deg);
}

/* ----- Header ----- */
.header {
  position: sticky;
  top: 0;
  height: var(--header-height);
  margin-left: var(--sidebar-width);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-xl);
  z-index: var(--z-header);
  transition: margin-left var(--transition-slow);
}

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

.header-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text-primary);
}

.header-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.header-breadcrumb-separator {
  color: var(--color-text-tertiary);
}

.header-breadcrumb-current {
  color: var(--color-text-primary);
  font-weight: 500;
}

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

.header-icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: none;
  background: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast),
    color var(--transition-fast);
  position: relative;
}

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

.header-icon-btn-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--color-danger);
  border: 2px solid var(--color-surface);
}

/* ----- Pending Badge (header) ----- */
.header-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px 5px 8px;
  background: var(--color-warning-light);
  border: 1px solid var(--color-warning);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-warning-dark);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
}

.header-badge:hover {
  background: var(--color-warning-light);
  border-color: var(--color-warning);
}

.header-badge svg {
  color: var(--color-warning-dark);
}

#pending-count {
  font-variant-numeric: tabular-nums;
}

/* ----- Main Content ----- */
.main-content {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  padding: var(--spacing-xl);
  transition: margin-left var(--transition-slow);
}

.sidebar.collapsed ~ .header,
.sidebar--collapsed ~ .header {
  margin-left: var(--sidebar-collapsed-width);
}

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

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

/* ----- Page Header ----- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
}

.page-header-left {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.page-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

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

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

/* ----- Content Grid ----- */
.content-grid {
  display: grid;
  gap: var(--spacing-xl);
}

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

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

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

.content-grid-auto {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* ----- Card Base ----- */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border-light);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg) var(--spacing-xl);
  border-bottom: 1px solid var(--color-border-light);
}

.card-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-primary);
}

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

.card-footer {
  padding: var(--spacing-base) var(--spacing-xl);
  border-top: 1px solid var(--color-border-light);
}

/* ----- Loading Spinner ----- */
.spinner {
  width: 24px;
  height: 24px;
  border: 2.5px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.6s linear infinite;
}

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 3px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ----- Loading State ----- */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4xl);
  gap: var(--spacing-base);
}

.loading-state-text {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
}

/* ----- Scrollbar ----- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background-color: rgba(0, 0, 0, 0.15);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background-color: rgba(0, 0, 0, 0.25);
}

/* ----- Utility — Hidden ----- */
.hidden {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ----- Utility — Text ----- */
.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

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

.text-danger {
  color: var(--color-danger);
}

.text-success {
  color: var(--color-success);
}

.text-warning {
  color: var(--color-warning);
}

/* ----- Utility — Flex ----- */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-base {
  gap: var(--spacing-base);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.gap-xl {
  gap: var(--spacing-xl);
}