/* ========================================
   OrcaBot Admin Panel - Modern CSS
   ======================================== */

/* CSS Variables for Theming */
:root {
  /* Light Theme (default) */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  
  /* Accent Colors */
  --accent-primary: #3b82f6;
  --accent-primary-hover: #2563eb;
  --accent-primary-light: #eff6ff;
  --accent-success: #10b981;
  --accent-success-light: #ecfdf5;
  --accent-warning: #f59e0b;
  --accent-warning-light: #fffbeb;
  --accent-danger: #ef4444;
  --accent-danger-light: #fef2f2;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #334155;
  --border-light: #1e293b;
  
  --accent-primary-light: #1e3a5f;
  --accent-success-light: #064e3b;
  --accent-warning-light: #451a03;
  --accent-danger-light: #450a0a;
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* ========================================
   Base Styles
   ======================================== */

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

.hidden {
  display: none !important;
}

/* ========================================
   Login Screen
   ======================================== */

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

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

.login-logo {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.logo-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--space-sm);
}

.login-logo h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
}

.login-logo p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: var(--space-xs);
}

.login-footer {
  margin-top: var(--space-lg);
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-color);
}

.error-text {
  color: var(--accent-danger);
  font-size: 0.875rem;
  margin-top: var(--space-md);
  text-align: center;
}

/* ========================================
   Form Elements
   ======================================== */

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

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.text-input,
.select-input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: 0.9375rem;
  font-family: inherit;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.text-input:focus,
.select-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-light);
}

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

.text-input.readonly {
  background: var(--bg-tertiary);
  cursor: not-allowed;
}

textarea.text-input {
  resize: vertical;
  min-height: 80px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
}

.form-section-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin: var(--space-lg) 0 var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-color);
}

.total-display {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  padding: 0.5rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.625rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 500;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--accent-primary);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-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-primary);
  border-color: var(--text-muted);
}

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

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

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

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
}

.btn-full {
  width: 100%;
}

.btn .icon {
  font-size: 1.1em;
}

.btn-loader {
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ========================================
   Theme Toggle
   ======================================== */

.theme-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
}

.theme-toggle input {
  display: none;
}

.toggle-slider {
  width: 44px;
  height: 24px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  position: relative;
  transition: background var(--transition-fast);
}

.toggle-slider::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.theme-toggle input:checked + .toggle-slider {
  background: var(--accent-primary);
}

.theme-toggle input:checked + .toggle-slider::after {
  transform: translateX(20px);
}

.toggle-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ========================================
   Header
   ======================================== */

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-xl);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.header-left .logo-icon {
  font-size: 1.75rem;
}

.header-left h1 {
  font-size: 1.25rem;
  font-weight: 600;
}

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

.system-status {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background var(--transition-fast);
}

.system-status.online .status-dot {
  background: var(--accent-success);
}

.system-status.offline .status-dot {
  background: var(--accent-danger);
}

/* ========================================
   Navigation
   ======================================== */

.nav-tabs {
  display: flex;
  gap: var(--space-xs);
  padding: 0 var(--space-xl);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
}

.nav-tab {
  padding: var(--space-md) var(--space-lg);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-tab:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

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

/* ========================================
   Content
   ======================================== */

.content {
  padding: var(--space-xl);
  max-width: 1400px;
  margin: 0 auto;
}

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

.section-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
}

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

.header-actions .select-input,
.header-actions .text-input {
  width: auto;
  min-width: 200px;
}

.subsection-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin: var(--space-xl) 0 var(--space-md);
  color: var(--text-primary);
}

/* ========================================
   Stats Grid
   ======================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-lg);
}

.stat-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.stat-icon {
  font-size: 2rem;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
}

.stat-info {
  display: flex;
  flex-direction: column;
}

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

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ========================================
   CUIT Status Cards
   ======================================== */

.cuit-status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

.cuit-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast);
}

.cuit-card:hover {
  box-shadow: var(--shadow-md);
}

.cuit-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
}

.cuit-number {
  font-size: 1.125rem;
  font-weight: 600;
  font-family: 'SF Mono', 'Fira Code', monospace;
}

.cuit-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
}

.cuit-badge.active {
  background: var(--accent-success-light);
  color: var(--accent-success);
}

.cuit-badge.inactive {
  background: var(--accent-danger-light);
  color: var(--accent-danger);
}

.cuit-badge.warning {
  background: var(--accent-warning-light);
  color: var(--accent-warning);
}

.cuit-card-body {
  padding: var(--space-lg);
}

.cuit-info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border-light);
}

.cuit-info-row:last-child {
  border-bottom: none;
}

.cuit-info-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.cuit-info-value {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.cuit-info-value.danger {
  color: var(--accent-danger);
}

.cuit-info-value.warning {
  color: var(--accent-warning);
}

.cuit-card-actions {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.cuit-card-actions .btn {
  flex: 1;
  min-width: fit-content;
}

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

.table-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

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

.data-table th,
.data-table td {
  padding: var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
}

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

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

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

.data-table .actions-cell {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.loading-row td {
  padding: var(--space-xl);
}

/* ========================================
   Loading States
   ======================================== */

.loading-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  color: var(--text-secondary);
  gap: var(--space-md);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ========================================
   Modal
   ======================================== */

.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-lg);
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  animation: modalIn 0.2s ease;
}

.modal-lg {
  max-width: 720px;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

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

.modal-header h3 {
  font-size: 1.125rem;
  font-weight: 600;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

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

.modal-body {
  padding: var(--space-lg);
  overflow-y: auto;
}

.modal-footer {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
  padding: var(--space-lg);
  border-top: 1px solid var(--border-color);
  background: var(--bg-tertiary);
}

.code-block {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.8125rem;
  line-height: 1.5;
  background: var(--bg-primary);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 400px;
  overflow-y: auto;
}

/* ========================================
   Form Card
   ======================================== */

.form-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

/* ========================================
   Toast Notifications
   ======================================== */

.toast-container {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 400px;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.3s ease;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.toast.success {
  border-left: 4px solid var(--accent-success);
}

.toast.error {
  border-left: 4px solid var(--accent-danger);
}

.toast.warning {
  border-left: 4px solid var(--accent-warning);
}

.toast.info {
  border-left: 4px solid var(--accent-primary);
}

.toast-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 0.125rem;
}

.toast-message {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.toast-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  font-size: 1rem;
}

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

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

@media (max-width: 768px) {
  .header {
    padding: var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-md);
  }
  
  .header-right {
    width: 100%;
    justify-content: space-between;
  }
  
  .nav-tabs {
    padding: 0 var(--space-md);
  }
  
  .nav-tab {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
  }
  
  .content {
    padding: var(--space-md);
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .header-actions {
    width: 100%;
    flex-direction: column;
  }
  
  .header-actions .select-input,
  .header-actions .text-input {
    width: 100%;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .cuit-status-grid {
    grid-template-columns: 1fr;
  }
  
  .form-grid {
    grid-template-columns: 1fr;
  }
  
  .modal-content {
    max-height: 85vh;
  }
  
  .toast-container {
    left: var(--space-md);
    right: var(--space-md);
    max-width: none;
  }
  
  .data-table {
    font-size: 0.875rem;
  }
  
  .data-table th,
  .data-table td {
    padding: var(--space-sm);
  }
}

@media (max-width: 480px) {
  .form-actions {
    flex-direction: column;
  }
  
  .form-actions .btn {
    width: 100%;
  }
  
  .modal-footer {
    flex-direction: column;
  }
  
  .modal-footer .btn {
    width: 100%;
  }
}