/* Stripe & Linear Inspired Light Theme System */
:root {
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Color System */
  --bg-app: #f8fafc;        /* Slate 50 */
  --bg-card: #ffffff;
  --bg-card-hover: #f1f5f9; /* Slate 100 */
  
  --border-color: #e2e8f0;    /* Slate 200 */
  --border-hover: #cbd5e1;    /* Slate 300 */
  --border-focus: #6366f1;    /* Indigo 500 */
  
  --text-primary: #0f172a;    /* Slate 900 */
  --text-secondary: #475569;  /* Slate 600 */
  --text-muted: #64748b;      /* Slate 500 */
  
  /* Brand colors */
  --brand-color: #4f46e5;     /* Indigo 600 */
  --brand-hover: #4338ca;     /* Indigo 700 */
  --brand-light: #e0e7ff;     /* Indigo 100 */
  
  /* Status Colors */
  --color-active: #059669;      /* Emerald 600 */
  --color-active-bg: #ecfdf5;   /* Emerald 50 */
  --color-active-border: #a7f3d0;
  
  --color-delete: #dc2626;      /* Red 600 */
  --color-delete-bg: #fef2f2;   /* Red 50 */
  --color-delete-row: #fee2e2;  /* Red 100 */
  --color-delete-border: #fca5a5;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 4px 6px -4px rgba(0, 0, 0, 0.04);

  --transition-fast: 0.1s ease;
  --transition-smooth: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Global Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-family);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  line-height: 1.5;
}

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

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

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

.app-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* Typography Hierarchy */
h1, h2, h3, .stat-value {
  letter-spacing: -0.02em; /* Tight letter spacing for premium look */
}

/* Header Section */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1.25rem 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: var(--brand-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #ffffff;
}

.logo-text h1 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
}

.logo-text .sub-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* CSV Upload Area */
.upload-zone {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: #f8fafc;
  border: 1px dashed var(--border-hover);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.upload-zone:hover {
  border-color: var(--brand-color);
  background: #f1f5f9;
}

.upload-zone.dragover {
  border-color: var(--brand-color);
  background: var(--brand-light);
}

.upload-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-family: var(--font-family);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  border: 1px solid transparent;
  outline: none;
}

.btn-upload {
  background: var(--brand-color);
  color: #ffffff;
}

.btn-upload:hover {
  background: var(--brand-hover);
}

.btn-export {
  background: #ffffff;
  color: var(--text-primary);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.btn-export:hover {
  background: var(--color-delete-bg);
  color: var(--color-delete);
  border-color: var(--color-delete-border);
}

.btn-export:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: #ffffff;
  color: var(--text-muted);
  border-color: var(--border-color);
  box-shadow: none;
}

/* Statistics Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1.25rem 1.5rem;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.stat-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
}

.total-emails .stat-icon {
  background: #f0f9ff;
  color: #0369a1;
}

.to-delete .stat-icon {
  background: var(--color-delete-bg);
  color: var(--color-delete);
}

.business-standard .stat-icon {
  background: #fffbeb;
  color: #b45309;
}

.exchange-plans .stat-icon {
  background: #f5f3ff;
  color: #6d28d9;
}

.stat-details h3 {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

/* Search and Filters */
.controls-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1rem 1.25rem;
  border-radius: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
}

.search-container {
  position: relative;
  flex-grow: 1;
  max-width: 400px;
}

.search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.85rem;
}

.search-container input {
  width: 100%;
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 0.55rem 0.75rem 0.55rem 2rem;
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.85rem;
  outline: none;
  transition: var(--transition-fast);
}

.search-container input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.select-wrapper {
  position: relative;
}

.select-wrapper::after {
  content: '\f107';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  font-size: 0.8rem;
}

.select-wrapper select {
  appearance: none;
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 0.55rem 2.25rem 0.55rem 0.85rem;
  border-radius: 6px;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
  transition: var(--transition-fast);
  min-width: 160px;
}

.select-wrapper select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

/* Data Table Component */
.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.table-header-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.table-title h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.table-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.sync-status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  padding: 0.25rem 0.6rem;
  border-radius: 12px;
}

.pulse-green {
  width: 6px;
  height: 6px;
  background: var(--color-active);
  border-radius: 50%;
  display: inline-block;
}

.sync-text {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-active);
}

.table-scroll-wrapper {
  overflow-x: auto;
  max-height: 550px;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background: #f8fafc;
  padding: 0.85rem 1.25rem; /* Larger padding for premium feel */
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 10;
}

td {
  padding: 0.85rem 1.25rem; /* Spacious padding */
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  vertical-align: middle;
  transition: background-color var(--transition-fast);
}

tbody tr:hover:not(.empty-state) {
  background: #f8fafc;
}

/* Deletion Marked Row Styling - Strong Warning Red Tint */
tbody tr.marked-deletion-row {
  background-color: #fee2e2 !important; /* Bolder Red 100 tint */
}

tbody tr.marked-deletion-row:hover {
  background-color: #fca5a5 !important; /* Darker Red 300 on hover */
}

tbody tr.marked-deletion-row td {
  border-bottom-color: #f87171; /* Bolder border Red 400 */
}

.marked-deletion-row .cell-name {
  color: #991b1b; /* Stronger Red 800 */
  text-decoration: line-through;
  opacity: 0.9;
  font-weight: 600; /* Bold Name to stand out */
}

.marked-deletion-row .cell-email {
  color: #b91c1c; /* Stronger Red 700 */
  text-decoration: line-through;
  opacity: 0.8;
}

/* Typography styles for cells */
.cell-name {
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
  display: block;
}

.cell-email {
  color: var(--text-secondary);
  font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.8rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
  display: block;
}

/* Clean Badges (Flat with subtle borders) */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 500;
}

.badge-source {
  background: #f1f5f9;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 0.1rem 0.35rem;
  font-size: 0.7rem;
}

.cell-licenses {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  max-width: 100%;
}

.badge-license {
  background: #f0f9ff;
  color: #0369a1;
  border: 1px solid #bae6fd;
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 500;
  white-space: nowrap;
  line-height: 1.2;
}

.badge-license.standard {
  background: #fffbeb;
  color: #92400e;
  border: 1px solid #fef3c7;
}

.marked-deletion-row .badge-license {
  opacity: 0.6;
}

/* Status Indicator Dots (Subtle & Tiny) */
.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: block;
  margin: 0 auto;
}

.status-dot.active {
  background: var(--color-active);
}

.status-dot.delete {
  background: var(--color-delete);
}

/* Text Input for Núcleo */
.nucleo-input {
  width: 100%;
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.65rem; /* Slightly taller for better UX */
  border-radius: 4px;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.8rem;
  outline: none;
  transition: var(--transition-fast);
}

.nucleo-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

.nucleo-input:placeholder-shown {
  font-style: italic;
  color: var(--text-muted);
}

.marked-deletion-row .nucleo-input {
  opacity: 0.6;
  background: rgba(255, 255, 255, 0.5);
}

.input-container-relative {
  position: relative;
  display: flex;
  align-items: center;
}

.save-spinner {
  position: absolute;
  right: 0.5rem;
  font-size: 0.75rem;
  color: var(--color-active);
  opacity: 0;
  transition: var(--transition-fast);
  pointer-events: none;
}

.save-spinner.active {
  opacity: 1;
}

/* Delete Toggle Button */
.btn-toggle-delete {
  background: #ffffff;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin: 0 auto;
}

.btn-toggle-delete:hover {
  background: var(--color-delete-bg);
  color: var(--color-delete);
  border-color: var(--color-delete-border);
}

.marked-deletion-row .btn-toggle-delete {
  background: var(--color-delete);
  color: #ffffff;
  border-color: var(--color-delete);
}

.marked-deletion-row .btn-toggle-delete:hover {
  background: #b91c1c;
}

/* Empty State */
.empty-state-content {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-secondary);
}

.empty-state-content i {
  font-size: 2.5rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.empty-state-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.empty-state-content p {
  font-size: 0.8rem;
  max-width: 360px;
  margin: 0 auto;
}

/* App Footer */
.app-footer-info {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

/* Toast Notifications */
.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  z-index: 1000;
  transition: transform 0.2s ease, opacity 0.2s;
  opacity: 1;
  transform: translateY(0);
}

.toast.hidden {
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
}

.toast.success {
  border-color: var(--color-active-border);
  background: var(--color-active-bg);
}

.toast.success i {
  color: var(--color-active);
}

.toast.error {
  border-color: var(--color-delete-border);
  background: var(--color-delete-bg);
}

.toast.error i {
  color: var(--color-delete);
}

.toast.info {
  border-color: #bae6fd;
  background: #f0f9ff;
}

.toast.info i {
  color: #0284c7;
}

/* Responsive Styles */
@media (max-width: 900px) {
  .app-header {
    flex-direction: column;
    align-items: stretch;
    padding: 1.25rem 1.5rem;
  }
  .upload-zone {
    justify-content: center;
  }
  .controls-panel {
    flex-direction: column;
    align-items: stretch;
  }
  .search-container {
    max-width: 100%;
  }
  .filter-group {
    justify-content: space-between;
  }
  .select-wrapper select {
    min-width: unset;
    flex-grow: 1;
  }
  .app-container {
    padding: 1.5rem 1rem;
  }
}