/* ============================================
   Lantech AI - Modern Design System
   ============================================ */

/* CSS Variables */
:root {
  /* Colors - Backgrounds */
  --bg-base: #f8fafc;
  --bg-card: #ffffff;
  --bg-sidebar: #0f172a;
  --bg-sidebar-hover: rgba(255, 255, 255, 0.05);
  --bg-input: #ffffff;
  --bg-input-focus: #ffffff;

  /* Colors - Text */
  --text-primary: #0f172a;
  --text-body: #475569;
  --text-muted: #94a3b8;
  --text-inverse: #ffffff;

  /* Colors - Borders */
  --border: #e2e8f0;
  --border-light: #f1f5f9;

  /* Colors - Accent */
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-light: rgba(59, 130, 246, 0.1);
  --accent-ring: rgba(59, 130, 246, 0.15);

  /* Colors - Status */
  --success: #22c55e;
  --success-light: rgba(34, 197, 94, 0.1);
  --success-text: #16a34a;
  --error: #ef4444;
  --error-light: rgba(239, 68, 68, 0.1);
  --error-text: #dc2626;
  --warning: #eab308;
  --warning-light: rgba(234, 179, 8, 0.1);
  --warning-text: #ca8a04;

  /* Spacing */
  --sidebar-collapsed: 64px;
  --sidebar-expanded: 240px;
  --header-height: 64px;
  --content-max-width: 1280px;
  --content-padding: 32px;

  /* Typography */
  --font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.05), 0 4px 12px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.08), 0 8px 24px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 8px 24px rgba(0, 0, 0, 0.12), 0 16px 48px rgba(0, 0, 0, 0.08);

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

/* ============================================
   Reset & Base
   ============================================ */

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

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--text-body);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em 0;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.025em;
  line-height: 1.3;
}

h1 { font-size: var(--font-size-3xl); font-weight: 700; }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-sm); }

p {
  margin: 0 0 1em 0;
}

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

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

/* ============================================
   Layout - External (Login, etc.)
   ============================================ */

.lt-external-layout {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-base) 0%, #e2e8f0 100%);
  padding: 24px;
}

.lt-external-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: 48px;
  width: 100%;
  max-width: 420px;
}

.lt-external-logo {
  text-align: center;
  margin-bottom: 32px;
}

.lt-external-logo img {
  height: 48px;
  object-fit: contain;
}

.lt-external-logo h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: 0;
}

.lt-external-logo span {
  color: var(--accent);
}

.lt-external-title {
  text-align: center;
  margin-bottom: 8px;
}

.lt-external-subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: var(--font-size-sm);
}

/* ============================================
   Layout - Internal (Dashboard, etc.)
   ============================================ */

.lt-app-layout {
  display: flex;
  min-height: 100vh;
}

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

.lt-sidebar:hover,
.lt-sidebar.expanded,
html.sidebar-expanded .lt-sidebar {
  width: var(--sidebar-expanded);
}

.lt-sidebar.no-transition {
  transition: none;
}

.lt-sidebar-logo {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  white-space: nowrap;
  overflow: hidden;
}

.lt-sidebar-logo-icon {
  width: 24px;
  height: 24px;
  min-width: 24px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: var(--font-size-sm);
}

.lt-sidebar-logo-text {
  margin-left: 12px;
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-inverse);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.lt-sidebar-logo-text span {
  color: var(--accent);
}

.lt-sidebar:hover .lt-sidebar-logo-text,
html.sidebar-expanded .lt-sidebar-logo-text {
  opacity: 1;
}

/* Sidebar Navigation */
.lt-sidebar-nav {
  flex: 1;
  padding: 16px 0;
  overflow-y: auto;
  overflow-x: hidden;
}

.lt-nav-group {
  margin-bottom: 8px;
}

.lt-nav-group-label {
  padding: 8px 20px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.lt-sidebar:hover .lt-nav-group-label,
html.sidebar-expanded .lt-nav-group-label {
  opacity: 1;
}

.lt-nav-item {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  color: #94a3b8;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast);
  position: relative;
}

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

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

.lt-nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background: var(--accent);
  border-radius: 0 3px 3px 0;
}

.lt-nav-item i {
  width: 24px;
  min-width: 24px;
  text-align: center;
  font-size: var(--font-size-base);
}

.lt-nav-item-text {
  margin-left: 12px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.lt-sidebar:hover .lt-nav-item-text,
html.sidebar-expanded .lt-nav-item-text {
  opacity: 1;
}

/* Tooltip for collapsed sidebar */
.lt-nav-item[data-tooltip] {
  position: relative;
}

.lt-nav-item[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(var(--sidebar-collapsed) + 8px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-sidebar);
  color: var(--text-inverse);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: 1000;
}

.lt-sidebar:not(:hover) .lt-nav-item[data-tooltip]:hover::after {
  opacity: 1;
}

/* Main Content Area */
.lt-main {
  flex: 1;
  margin-left: var(--sidebar-collapsed);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition-base);
}

/* Header */
.lt-header {
  height: var(--header-height);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.lt-header-left {
  display: flex;
  align-items: center;
}

.lt-header-logo {
  height: 32px;
  object-fit: contain;
}

.lt-header-center {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 0 24px;
}

.lt-header-search {
  width: 100%;
  max-width: 400px;
  position: relative;
  display: flex;
  align-items: center;
}

.lt-header-search > i,
.lt-header-search > svg {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 14px;
  width: 14px;
  height: 14px;
  pointer-events: none;
  z-index: 1;
  line-height: 1;
}

.lt-header-search input {
  width: 100%;
  height: 40px;
  padding: 0 16px 0 44px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-family: inherit;
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.lt-header-search input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}

/* Search Results Dropdown */
.lt-search-results {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 400px;
  overflow-y: auto;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.lt-search-results.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lt-search-results-header {
  padding: 8px 16px 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.lt-search-results-section + .lt-search-results-section {
  border-top: 1px solid var(--border-light);
}

.lt-search-results-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  color: var(--text-body);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: background var(--transition-fast);
  cursor: pointer;
}

.lt-search-results-item:hover,
.lt-search-results-item.active {
  background: var(--bg-base);
  color: var(--text-primary);
}

.lt-search-results-item i {
  width: 16px;
  color: var(--text-muted);
  font-size: 13px;
  flex-shrink: 0;
}

.lt-search-results-item-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.lt-search-results-item-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lt-search-results-item-detail {
  font-size: 11px;
  color: var(--text-muted);
}

.lt-search-results-empty {
  padding: 16px;
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.lt-header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* User Menu */
.lt-user-menu {
  position: relative;
}

.lt-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.lt-user-avatar:hover {
  transform: scale(1.05);
}

.lt-user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 180px;
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.lt-user-menu:hover .lt-user-dropdown,
.lt-user-dropdown:hover {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lt-user-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  color: var(--text-body);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: background var(--transition-fast);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.lt-user-dropdown-item:hover {
  background: var(--bg-base);
  color: var(--text-primary);
}

.lt-user-dropdown-item i {
  width: 16px;
  color: var(--text-muted);
}

.lt-user-dropdown-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 0;
}

/* Content Container */
.lt-content {
  flex: 1;
  padding: var(--content-padding);
  max-width: var(--content-max-width);
  width: 100%;
  margin: 0 auto;
}

.lt-content-full {
  max-width: none;
}

/* Page Header */
.lt-page-header {
  margin-bottom: 24px;
}

.lt-page-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: 4px;
}

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

/* ============================================
   Cards
   ============================================ */

.lt-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.lt-card-hover:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

.lt-card-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lt-card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0;
}

.lt-card-body {
  padding: 24px;
}

.lt-card-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg-base);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* Stat Cards */
.lt-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.lt-stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.lt-stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
}

.lt-stat-icon-blue {
  background: var(--accent-light);
  color: var(--accent);
}

.lt-stat-icon-green {
  background: var(--success-light);
  color: var(--success-text);
}

.lt-stat-icon-red {
  background: var(--error-light);
  color: var(--error-text);
}

.lt-stat-icon-yellow {
  background: var(--warning-light);
  color: var(--warning-text);
}

.lt-stat-content {
  flex: 1;
}

.lt-stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.lt-stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: 4px;
}

/* Stat Card Popups */
.lt-stat-card {
  position: relative;
}

.lt-stat-popup {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 50;
  min-width: 360px;
  margin-top: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 16px;
}

.lt-stat-popup::before {
  content: '';
  position: absolute;
  top: -20px;
  left: 0;
  right: 0;
  height: 20px;
}

.lt-stat-card:hover .lt-stat-popup {
  display: block;
}

.lt-stat-popup-chart {
  position: relative;
  height: 160px;
  width: 100%;
}

.lt-stat-popup-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.lt-stat-popup-footer {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: 12px;
  padding-top: 8px;
  border-top: 1px solid var(--border-light);
}

.lt-stat-popup-user {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  font-size: var(--font-size-sm);
  color: var(--text-body);
}

.lt-stat-popup-more {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  padding-top: 6px;
  margin-top: 4px;
  border-top: 1px solid var(--border-light);
}

.lt-stat-popup-empty {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  padding: 8px 0;
}

/* ============================================
   Forms
   ============================================ */

.lt-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.lt-form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.lt-form-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.lt-form-label-required::after {
  content: ' *';
  color: var(--error);
}

.lt-form-input,
.lt-form-select,
.lt-form-textarea {
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-family: inherit;
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.lt-form-input::placeholder,
.lt-form-textarea::placeholder {
  color: var(--text-muted);
}

.lt-form-input:focus,
.lt-form-select:focus,
.lt-form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}

.lt-form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

.lt-form-textarea {
  min-height: 100px;
  resize: vertical;
}

.lt-form-hint {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.lt-form-error {
  font-size: var(--font-size-xs);
  color: var(--error-text);
}

/* ============================================
   Buttons
   ============================================ */

.lt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
  border: none;
  white-space: nowrap;
}

.lt-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.lt-btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: var(--shadow-sm);
}

.lt-btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.lt-btn-secondary {
  background: var(--bg-card);
  color: var(--text-body);
  border: 1px solid var(--border);
}

.lt-btn-secondary:hover:not(:disabled) {
  background: var(--bg-base);
  border-color: #cbd5e1;
}

.lt-btn-ghost {
  background: transparent;
  color: var(--text-body);
}

.lt-btn-ghost:hover:not(:disabled) {
  background: var(--bg-base);
}

.lt-btn-danger {
  background: var(--error);
  color: white;
}

.lt-btn-danger:hover:not(:disabled) {
  background: #dc2626;
  transform: translateY(-1px);
}

.lt-btn-sm {
  padding: 6px 12px;
  font-size: var(--font-size-xs);
}

.lt-btn-lg {
  padding: 14px 28px;
  font-size: var(--font-size-base);
}

.lt-btn-full {
  width: 100%;
}

.lt-btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
}

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

/* ============================================
   Badges
   ============================================ */

.lt-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.lt-badge-valid {
  background: var(--success-light);
  color: var(--success-text);
}

.lt-badge-invalid {
  background: var(--error-light);
  color: var(--error-text);
}

.lt-badge-undecided {
  background: var(--warning-light);
  color: var(--warning-text);
}

.lt-badge-info {
  background: var(--accent-light);
  color: var(--accent);
}

/* ============================================
   Tables
   ============================================ */

.lt-table-container {
  overflow-x: auto;
}

.lt-table {
  width: 100%;
  border-collapse: collapse;
}

.lt-table th,
.lt-table td {
  padding: 12px 16px;
  text-align: left;
}

.lt-table th {
  background: var(--bg-base);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
}

.lt-table td {
  border-bottom: 1px solid var(--border);
  font-size: var(--font-size-sm);
  color: var(--text-body);
}

.lt-table tbody tr {
  transition: background var(--transition-fast);
}

.lt-table tbody tr:hover {
  background: var(--bg-base);
}

.lt-table-actions {
  display: flex;
  gap: 8px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.lt-table tbody tr:hover .lt-table-actions {
  opacity: 1;
}

/* ============================================
   Lead List Items
   ============================================ */

.lt-lead-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.lt-lead-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.lt-lead-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.lt-lead-item-valid {
  border-left-color: var(--success);
}

.lt-lead-item-invalid {
  border-left-color: var(--error);
}

.lt-lead-item-undecided {
  border-left-color: var(--warning);
}

.lt-lead-item-info {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 16px;
}

.lt-lead-item-date {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.lt-lead-item-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ============================================
   Modals
   ============================================ */

.lt-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.lt-modal-overlay.active {
  display: flex;
}

.lt-modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 500px;
  max-height: calc(100vh - 48px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: lt-modal-in 200ms ease-out;
}

@keyframes lt-modal-in {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.lt-modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lt-modal-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0;
}

.lt-modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
  background: none;
  border: none;
}

.lt-modal-close:hover {
  background: var(--bg-base);
  color: var(--text-primary);
}

.lt-modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.lt-modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  background: var(--bg-base);
}

/* ============================================
   Alerts / Notices
   ============================================ */

.lt-alert {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.lt-alert i {
  margin-top: 2px;
}

.lt-alert-info {
  background: var(--accent-light);
  color: var(--accent);
  border-left: 3px solid var(--accent);
}

.lt-alert-success {
  background: var(--success-light);
  color: var(--success-text);
  border-left: 3px solid var(--success);
}

.lt-alert-error {
  background: var(--error-light);
  color: var(--error-text);
  border-left: 3px solid var(--error);
}

.lt-alert-warning {
  background: var(--warning-light);
  color: var(--warning-text);
  border-left: 3px solid var(--warning);
}

/* ============================================
   Pagination
   ============================================ */

.lt-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 16px 0;
}

.lt-pagination-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-body);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  text-decoration: none;
}

.lt-pagination-btn:hover {
  background: var(--bg-base);
  border-color: var(--border);
}

.lt-pagination-btn.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* ============================================
   Charts Panel
   ============================================ */

.lt-chart-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 24px;
}

.lt-chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.lt-chart-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin: 0;
}

.lt-chart-actions {
  display: flex;
  gap: 8px;
}

/* ============================================
   Dashboard Layout
   ============================================ */

.lt-dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 24px;
}

@media (max-width: 1024px) {
  .lt-dashboard-grid {
    grid-template-columns: 1fr;
  }
}

.lt-dashboard-main {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.lt-dashboard-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ============================================
   Settings Panel
   ============================================ */

.lt-settings-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.lt-settings-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.lt-settings-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin: 0;
}

.lt-settings-body {
  padding: 20px;
}

/* ============================================
   Empty States
   ============================================ */

.lt-empty-state {
  text-align: center;
  padding: 48px 24px;
}

.lt-empty-state i {
  font-size: 48px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.lt-empty-state-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.lt-empty-state-text {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* ============================================
   Utilities
   ============================================ */

.lt-text-center { text-align: center; }
.lt-text-right { text-align: right; }
.lt-text-muted { color: var(--text-muted); }
.lt-text-success { color: var(--success-text); }
.lt-text-error { color: var(--error-text); }
.lt-text-warning { color: var(--warning-text); }

.lt-mt-0 { margin-top: 0; }
.lt-mt-1 { margin-top: 8px; }
.lt-mt-2 { margin-top: 16px; }
.lt-mt-3 { margin-top: 24px; }
.lt-mt-4 { margin-top: 32px; }

.lt-mb-0 { margin-bottom: 0; }
.lt-mb-1 { margin-bottom: 8px; }
.lt-mb-2 { margin-bottom: 16px; }
.lt-mb-3 { margin-bottom: 24px; }
.lt-mb-4 { margin-bottom: 32px; }

.lt-flex { display: flex; }
.lt-flex-col { flex-direction: column; }
.lt-items-center { align-items: center; }
.lt-justify-between { justify-content: space-between; }
.lt-gap-1 { gap: 8px; }
.lt-gap-2 { gap: 16px; }
.lt-gap-3 { gap: 24px; }

.lt-hidden { display: none; }

/* ============================================
   Scrollbar Styling
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #cbd5e1;
}

/* ============================================
   Legacy Support (gradual migration)
   ============================================ */

/* These map old classes to new styles during transition */
.lt-body-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: calc(100vh - var(--header-height));
  padding: var(--content-padding);
}