/* ============================================
   WhatsApp SaaS Admin Dashboard - Styles
   ============================================ */

:root {
  --primary: #25D366;
  --primary-dark: #128C7E;
  --secondary: #34B7F1;
  --danger: #e74c3c;
  --warning: #f39c12;
  --success: #2ecc71;
  --info: #3498db;
  --purple: #9b59b6;

  --bg-primary: #f5f7fa;
  --bg-secondary: #ffffff;
  --bg-sidebar: #1a1a2e;
  --bg-sidebar-hover: #16213e;
  --bg-card: #ffffff;

  --text-primary: #1a1a2e;
  --text-secondary: #6c757d;
  --text-muted: #adb5bd;
  --text-light: #ffffff;

  --border-color: #e9ecef;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --sidebar-width: 280px;
  --header-height: 70px;

  --transition: all 0.3s ease;
}

[data-theme="dark"] {
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-sidebar: #0a0a14;
  --bg-sidebar-hover: #1a1a2e;
  --bg-card: #1e1e32;

  --text-primary: #e9ecef;
  --text-secondary: #adb5bd;
  --text-muted: #6c757d;

  --border-color: #2d2d44;
}

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

body {
  font-family: 'Segoe UI', 'Tahoma', 'Arial', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  direction: rtl;
  min-height: 100vh;
  transition: var(--transition);
}

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

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  padding: 20px;
}

.login-container {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.5s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.login-logo i {
  font-size: 56px;
  color: var(--primary);
  margin-bottom: 16px;
}

.login-logo h2 {
  font-size: 24px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.login-logo p {
  color: var(--text-secondary);
  font-size: 15px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-group label i {
  color: var(--primary);
  font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-family: inherit;
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.15);
}

.form-group input[type="color"] {
  height: 48px;
  padding: 4px;
  cursor: pointer;
}

.form-group input[type="file"] {
  padding: 10px;
}

.error-message {
  color: var(--danger);
  font-size: 14px;
  text-align: center;
  margin-top: 16px;
  padding: 10px;
  background: rgba(231, 76, 60, 0.1);
  border-radius: var(--radius-sm);
  display: none;
}

.error-message.show {
  display: block;
}

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

.dashboard {
  display: flex;
  min-height: 100vh;
}

/* ============================================
   Sidebar
   ============================================ */

.sidebar {
  position: fixed;
  right: 0;
  top: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-sidebar);
  color: var(--text-light);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: var(--transition);
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo i {
  font-size: 32px;
  color: var(--primary);
}

.logo span {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-light);
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  margin-bottom: 4px;
  cursor: pointer;
}

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

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

.nav-item i {
  font-size: 18px;
  width: 24px;
  text-align: center;
}

.nav-item .badge {
  margin-right: auto;
  background: rgba(255,255,255,0.2);
  color: var(--text-light);
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.admin-info {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.admin-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

.admin-details {
  display: flex;
  flex-direction: column;
}

.admin-name {
  font-weight: 600;
  font-size: 14px;
}

.admin-role {
  font-size: 12px;
  color: rgba(255,255,255,0.5);
}

.btn-logout {
  width: 100%;
  padding: 10px;
  background: rgba(231, 76, 60, 0.2);
  color: #ff6b6b;
  border: 1px solid rgba(231, 76, 60, 0.3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}

.btn-logout:hover {
  background: rgba(231, 76, 60, 0.3);
}

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

.main-content {
  flex: 1;
  margin-right: var(--sidebar-width);
  padding: 24px 32px;
  min-height: 100vh;
}

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

.top-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.top-header h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

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

.notifications {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
}

.notification-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  background: var(--danger);
  color: white;
  font-size: 11px;
  font-weight: 700;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.stat-card.primary .stat-icon { background: rgba(37, 211, 102, 0.15); color: var(--primary); }
.stat-card.success .stat-icon { background: rgba(46, 204, 113, 0.15); color: var(--success); }
.stat-card.warning .stat-icon { background: rgba(243, 156, 18, 0.15); color: var(--warning); }
.stat-card.info .stat-icon { background: rgba(52, 152, 219, 0.15); color: var(--info); }
.stat-card.danger .stat-icon { background: rgba(231, 76, 60, 0.15); color: var(--danger); }
.stat-card.purple .stat-icon { background: rgba(155, 89, 182, 0.15); color: var(--purple); }

.stat-info {
  flex: 1;
}

.stat-info h3 {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 8px;
}

.stat-info .number {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-info .change {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-info .change.up { color: var(--success); }
.stat-info .change.down { color: var(--danger); }

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

.cards-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

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

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.card-header h2 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-header h2 i {
  color: var(--primary);
}

.card-header .link {
  color: var(--primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}

.card-header .link:hover {
  text-decoration: underline;
}

.select-period {
  padding: 6px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
}

.chart-container {
  position: relative;
  height: 300px;
}

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

.section {
  display: none;
}

.section.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  gap: 16px;
  flex-wrap: wrap;
}

.search-filter {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  flex: 1;
}

.search-box {
  position: relative;
  flex: 1;
  min-width: 250px;
}

.search-box i {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 14px;
}

.search-box input {
  width: 100%;
  padding: 12px 40px 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  transition: var(--transition);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.1);
}

.filter-select {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
  min-width: 150px;
}

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

.table-responsive {
  overflow-x: auto;
}

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

.data-table th,
.data-table td {
  padding: 14px 16px;
  text-align: right;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--bg-primary);
}

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

.data-table tbody tr:hover {
  background: rgba(37, 211, 102, 0.03);
}

.data-table td {
  color: var(--text-primary);
  font-size: 14px;
}

.data-table td strong {
  font-weight: 600;
}

.data-table td small {
  color: var(--text-muted);
  font-size: 12px;
}

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

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
}

.badge-trial { background: #fff3e0; color: #e65100; }
.badge-active { background: #e8f5e9; color: #2e7d32; }
.badge-suspended { background: #ffebee; color: #c62828; }
.badge-expired { background: #f3e5f5; color: #7b1fa2; }
.badge-paid { background: #e8f5e9; color: #2e7d32; }
.badge-pending { background: #fff3e0; color: #e65100; }
.badge-overdue { background: #ffebee; color: #c62828; }

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

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

.btn-secondary:hover {
  background: var(--border-color);
}

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

.btn-danger:hover {
  background: #c0392b;
}

.btn-block {
  width: 100%;
  padding: 14px;
  font-size: 16px;
}

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

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

.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.pagination button {
  padding: 8px 14px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  transition: var(--transition);
}

.pagination button:hover,
.pagination button.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.show {
  display: flex;
  animation: fadeIn 0.2s ease;
}

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s ease;
}

.modal-content.modal-lg {
  max-width: 800px;
}

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

.modal-header h2 {
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.modal-header h2 i {
  color: var(--primary);
}

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  color: var(--text-muted);
  cursor: pointer;
  line-height: 1;
  transition: var(--transition);
}

.modal-close:hover {
  color: var(--danger);
}

.modal-body {
  padding: 24px;
}

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

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 20px;
}

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

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

.toast-container {
  position: fixed;
  top: 24px;
  left: 24px;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toast {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
  animation: slideInLeft 0.3s ease;
  border-right: 4px solid var(--primary);
}

.toast.success { border-right-color: var(--success); }
.toast.error { border-right-color: var(--danger); }
.toast.warning { border-right-color: var(--warning); }

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

.toast i {
  font-size: 20px;
}

.toast.success i { color: var(--success); }
.toast.error i { color: var(--danger); }
.toast.warning i { color: var(--warning); }

.toast-message {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 18px;
}

/* ============================================
   Loading Overlay
   ============================================ */

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 4000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.loading-overlay p {
  color: white;
  font-size: 16px;
  font-weight: 600;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(255,255,255,0.3);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

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

.hidden {
  display: none !important;
}

/* Checkbox */
input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  cursor: pointer;
}

/* Responsive */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-right: 0;
  }

  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }

  .cards-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .main-content {
    padding: 16px;
  }

  .section-header {
    flex-direction: column;
    align-items: stretch;
  }

  .search-filter {
    flex-direction: column;
  }

  .search-box {
    min-width: auto;
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}