/* client/style.css */
:root {
  --bg-primary: #1a1a1a;
  --bg-secondary: #2a2a2a;
  --bg-tertiary: #333;
  --bg-hover: #3a3a3a;
  --text-primary: #e0e0e0;
  --text-secondary: #b0b0b0;
  --text-muted: gray;
  --border-color: #404040;
  --border-light: #333;
  --primary: #4caf50;
  --primary-hover: #66bb6a;
  --secondary: #2196f3;
  --danger: #f44336;
  --warning: #ff9800;
  --success: #4caf50;
  --shadow-sm: 0 2px 4px #0000004d;
  --shadow-md: 0 4px 8px #0006;
  --shadow-lg: 0 8px 16px #00000080;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
}

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

html, body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

body {
  overflow-x: hidden;
}

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

a:hover {
  text-decoration: underline;
}

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

.topbar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md) 0;
  position: sticky;
  z-index: 100;
  box-shadow: var(--shadow-sm);
  top: 0;
}

.topbar-content {
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items:  center;
  max-width: 1200px;
  margin: 0 auto;
}

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

.logo {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 600;
}

.logo:hover {
  color: var(--primary);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
}

.nav-link {
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all .2s;
}

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

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

.main-content {
  padding: var(--spacing-xl) 0;
  flex: 1;
}

.container {
  padding: 0 var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

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

.page-header h1 {
  margin: 0;
  font-size: 2rem;
  font-weight: 600;
}

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: center;
  cursor: pointer;
  border-radius: var(--radius-sm);
  text-decoration: none;
  border: none;
  transition: all .2s;
  font-size: .95rem;
  font-weight: 500;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: .5;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-hover);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 6px 12px;
  font-size: .875rem;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
  font-size: .875rem;
  font-weight: 500;
}

input[type="text"], input[type="email"], input[type="password"], input[type="date"], input[type="search"], select, textarea {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  width: 100%;
  transition: all .2s;
  font-size: .95rem;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px #4caf501a;
}

input:disabled, select:disabled, textarea:disabled {
  opacity: .5;
  cursor: not-allowed;
}

.login-page {
  display: flex;
  padding: var(--spacing-md);
  background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
  justify-content: center;
  align-items:  center;
  min-height: 100vh;
}

.login-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
}

.login-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.login-header h1 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.75rem;
}

.login-header p {
  color: var(--text-secondary);
  font-size: .95rem;
}

.login-form {
  display: flex;
  flex-direction: column;
}

.error-message {
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
  background: #f443361a;
  font-size: .875rem;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.kpi-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  display: flex;
  align-items:  center;
  gap: var(--spacing-md);
  transition: all .2s;
}

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

.kpi-icon {
  flex-shrink: 0;
  font-size: 2.5rem;
}

.kpi-content {
  flex: 1;
}

.kpi-title {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
  font-size: .875rem;
  font-weight: 500;
}

.kpi-value {
  color: var(--text-primary);
  font-size: 2rem;
  font-weight: 600;
}

.kpi-subtitle {
  color: var(--text-muted);
  margin-top: var(--spacing-xs);
  font-size: .875rem;
}

.date-range-picker {
  display: flex;
  gap: var(--spacing-md);
  align-items:  center;
}

.date-range-picker label {
  display: flex;
  align-items:  center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  font-size: .875rem;
}

.date-range-picker input[type="date"] {
  width: auto;
}

.filters-bar {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.search-form {
  display: flex;
  gap: var(--spacing-sm);
  flex: 1;
  min-width: 250px;
}

.search-input {
  flex: 1;
}

.status-filter {
  min-width: 150px;
}

.table-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

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

.data-table thead {
  background: var(--bg-tertiary);
}

.data-table th {
  padding: var(--spacing-md);
  text-align: left;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  font-size: .875rem;
  font-weight: 600;
}

.data-table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-light);
}

.data-table tbody tr {
  cursor: pointer;
  transition: background .2s;
}

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

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.mail-subject a {
  color: var(--text-primary);
  font-weight: 500;
}

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

.link-url a {
  color: var(--secondary);
  word-break: break-all;
}

.status-badge {
  display: inline-block;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 4px 8px;
  font-size: .75rem;
  font-weight: 600;
}

.status-sent {
  color: var(--success);
  background: #4caf5026;
}

.status-queued {
  color: var(--secondary);
  background: #2196f326;
}

.status-sending {
  color: var(--warning);
  background: #ff980026;
}

.status-failed {
  color: var(--danger);
  background: #f4433626;
}

.status-active {
  color: var(--success);
  background: #4caf5026;
}

.status-unsubscribed {
  color: var(--text-muted);
  background: #9e9e9e26;
}

.pagination {
  display: flex;
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  justify-content: space-between;
  align-items:  center;
}

.pagination-info {
  color: var(--text-secondary);
  font-size: .875rem;
}

.mail-header {
  margin-bottom: var(--spacing-lg);
}

.back-link {
  display: inline-block;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  font-size: .875rem;
}

.back-link:hover {
  color: var(--primary);
}

.mail-header h1 {
  margin-bottom: var(--spacing-sm);
}

.mail-meta {
  display: flex;
  gap: var(--spacing-md);
  color: var(--text-secondary);
  flex-wrap: wrap;
  align-items:  center;
  font-size: .875rem;
}

.tabs {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.tab {
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--text-secondary);
  cursor: pointer;
  background: none;
  border: none;
  border-bottom: 2px solid #0000;
  transition: all .2s;
  font-size: .95rem;
}

.tab:hover {
  color: var(--text-primary);
}

.tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-content {
  margin-bottom: var(--spacing-lg);
}

.events-list {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
}

.event-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-light);
}

.event-item:last-child {
  border-bottom: none;
}

.event-icon {
  flex-shrink: 0;
  font-size: 1.5rem;
}

.event-content {
  flex: 1;
}

.event-type {
  margin-bottom: var(--spacing-xs);
}

.event-meta {
  color: var(--text-secondary);
  font-size: .875rem;
}

.event-detail {
  color: var(--text-muted);
  margin-top: var(--spacing-xs);
  font-size: .875rem;
}

.loading-spinner {
  display: flex;
  padding: var(--spacing-xl) 0;
  justify-content: center;
  align-items:  center;
  gap: var(--spacing-md);
  flex-direction: column;
}

.spinner {
  border: 3px solid var(--border-color);
  border-top-color: var(--primary);
  animation: spin .8s linear infinite;
  border-radius: 50%;
  width: 40px;
  height: 40px;
}

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

.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
}

.empty-icon {
  margin-bottom: var(--spacing-md);
  font-size: 4rem;
}

.empty-state h2 {
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.empty-state p {
  color: var(--text-secondary);
}

.quick-actions {
  margin-top: var(--spacing-lg);
  text-align: center;
}

@media (width <= 768px) {
  .topbar-content {
    gap: var(--spacing-md);
    flex-direction: column;
  }

  .topbar-left {
    gap: var(--spacing-sm);
    text-align: center;
    flex-direction: column;
    width: 100%;
  }

  .nav-links {
    justify-content: center;
    width: 100%;
  }

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

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

  .date-range-picker {
    flex-direction: column;
    align-items:  flex-start;
    width: 100%;
  }

  .date-range-picker label, .date-range-picker input[type="date"] {
    width: 100%;
  }

  .filters-bar {
    flex-direction: column;
  }

  .search-form, .status-filter {
    width: 100%;
  }

  .pagination {
    gap: var(--spacing-md);
    flex-direction: column;
  }

  .data-table {
    font-size: .875rem;
  }

  .data-table th, .data-table td {
    padding: var(--spacing-sm);
  }

  .tabs {
    overflow-x: auto;
  }

  .tab {
    white-space: nowrap;
  }
}

@media (width <= 480px) {
  .kpi-value, .page-header h1 {
    font-size: 1.5rem;
  }
}

.contact-lists-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.contact-list-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-md);
  flex-direction: column;
  transition: all .2s;
}

.contact-list-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.contact-list-header {
  display: flex;
  justify-content: space-between;
  align-items:  flex-start;
  gap: var(--spacing-md);
}

.contact-list-name {
  color: var(--text-primary);
  flex: 1;
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
}

.contact-list-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.contact-list-description {
  color: var(--text-secondary);
  margin: 0;
  font-size: .9rem;
}

.contact-list-stats {
  display: flex;
  gap: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.contact-list-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-list-stats .stat-value {
  color: var(--primary);
  font-size: 1.5rem;
  font-weight: 600;
}

.contact-list-stats .stat-label {
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
  font-size: .8rem;
}

.contact-list-footer {
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.radio-group {
  display: flex;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-sm);
}

.radio-label {
  display: flex;
  align-items:  center;
  gap: var(--spacing-sm);
  cursor: pointer;
  color: var(--text-secondary);
}

.radio-label input[type="radio"] {
  cursor: pointer;
}

.modal-large {
  width: 90vw;
  max-width: 700px;
}

.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-md);
}

.alert-info {
  color: var(--text-secondary);
  background: #2196f31a;
  border: 1px solid #2196f34d;
}

.alert ul {
  margin: .5rem 0 0 1rem;
  padding-left: 1rem;
}

.alert li {
  margin-bottom: .25rem;
}

.stats-row {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  min-width: 150px;
}

.stat-card .stat-value {
  color: var(--primary);
  font-size: 2rem;
  font-weight: 600;
}

.stat-card .stat-label {
  color: var(--text-muted);
  margin-top: var(--spacing-sm);
  font-size: .875rem;
}

.flex {
  display: flex;
}

.gap-2 {
  gap: var(--spacing-sm);
}

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

.text-danger:hover {
  color: #ff5252 !important;
}

.mb-4 {
  margin-bottom: var(--spacing-xl);
}