/* ===================================
   AI Flex Chart Admin Panel Styles
   Modern, Clean, Professional Design
   =================================== */

/* Root Variables */
:root {
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --secondary-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  --info-color: #3b82f6;
  --dark-color: #1f2937;
  --light-color: #f9fafb;
  --sidebar-width: 260px;
  --sidebar-collapsed-width: 80px;
  --topbar-height: 70px;
  --border-radius: 12px;
  --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --box-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--dark-color);
  background-color: var(--light-color);
  overflow-x: hidden;
}

@media (min-width: 768px) {
  html {
    font-size: 15px;
  }
}

/* Admin Wrapper */
.admin-wrapper {
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===================================
   Sidebar Styles
   =================================== */
.sidebar {
  width: var(--sidebar-width);
  background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  box-shadow: var(--box-shadow-lg);
  transition: var(--transition);
  z-index: 1000;
  position: fixed;
  height: 100vh;
  left: 0;
  top: 0;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}

.sidebar-header {
  padding: 24px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  transition: var(--transition);
}

.logo i {
  font-size: 28px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar.collapsed .logo span {
  display: none;
}

.sidebar-toggle {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  transition: var(--transition);
}

.sidebar-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Sidebar Navigation */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 20px 0;
}

.sidebar-nav::-webkit-scrollbar {
  width: 6px;
}

.sidebar-nav::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
  margin: 4px 12px;
  border-radius: 10px;
}

.nav-item i {
  font-size: 20px;
  min-width: 20px;
  text-align: center;
}

.sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 14px;
}

.sidebar.collapsed .nav-item span {
  display: none;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: translateX(4px);
}

.nav-item.active {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  color: #fff;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 60%;
  background: #fff;
  border-radius: 0 4px 4px 0;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  overflow: hidden;
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.user-details {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar.collapsed .user-details {
  display: none;
}

.user-name {
  font-weight: 600;
  font-size: 14px;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-email {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.logout-btn {
  background: rgba(239, 68, 68, 0.1);
  border: none;
  color: #ef4444;
  padding: 10px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logout-btn:hover {
  background: rgba(239, 68, 68, 0.2);
  transform: scale(1.1);
}

/* ===================================
   Main Content Area
   =================================== */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  min-height: 100vh;
  overflow-x: hidden;
}

.sidebar.collapsed ~ .main-content {
  margin-left: var(--sidebar-collapsed-width);
}

/* Top Bar */
.top-bar {
  height: var(--topbar-height);
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  z-index: 100;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  font-size: 24px;
  color: var(--dark-color);
  cursor: pointer;
  padding: 8px;
}

.page-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--dark-color);
  margin: 0;
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.icon-btn {
  position: relative;
  background: transparent;
  border: none;
  font-size: 20px;
  color: #6b7280;
  cursor: pointer;
  padding: 10px;
  border-radius: 8px;
  transition: var(--transition);
}

.icon-btn:hover {
  background: var(--light-color);
  color: var(--dark-color);
}

.icon-btn .badge {
  position: absolute;
  top: 6px;
  right: 6px;
  background: var(--danger-color);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 10px;
  min-width: 18px;
}

/* Content Wrapper */
.content-wrapper {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 32px;
  background: var(--light-color);
}

/* ===================================
   Card Components
   =================================== */
.card {
  background: #fff;
  border-radius: var(--border-radius);
  box-shadow: var(--box-shadow);
  padding: 24px;
  margin-bottom: 24px;
  transition: var(--transition);
}

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

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--light-color);
}

.card-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark-color);
  margin: 0;
}

.card-body {
  color: #6b7280;
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.stat-card {
  background: #fff;
  border-radius: var(--border-radius);
  padding: 24px;
  box-shadow: var(--box-shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary-color), var(--primary-hover));
}

.stat-card.success::before {
  background: linear-gradient(180deg, var(--secondary-color), #059669);
}

.stat-card.warning::before {
  background: linear-gradient(180deg, var(--warning-color), #d97706);
}

.stat-card.danger::before {
  background: linear-gradient(180deg, var(--danger-color), #dc2626);
}

.stat-card:hover {
  box-shadow: var(--box-shadow-lg);
  transform: translateY(-4px);
}

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

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  color: #fff;
}

.stat-card.success .stat-icon {
  background: linear-gradient(135deg, var(--secondary-color), #059669);
}

.stat-card.warning .stat-icon {
  background: linear-gradient(135deg, var(--warning-color), #d97706);
}

.stat-card.danger .stat-icon {
  background: linear-gradient(135deg, var(--danger-color), #dc2626);
}

.stat-label {
  font-size: 14px;
  color: #6b7280;
  margin-bottom: 8px;
  font-weight: 500;
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 8px;
}

.stat-change {
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.stat-change.positive {
  color: var(--secondary-color);
}

.stat-change.negative {
  color: var(--danger-color);
}

/* ===================================
   Buttons
   =================================== */
.btn {
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  color: #fff;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background: #e5e7eb;
  color: var(--dark-color);
}

.btn-secondary:hover {
  background: #d1d5db;
}

.btn-success {
  background: var(--secondary-color);
  color: #fff;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-danger {
  background: var(--danger-color);
  color: #fff;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ===================================
   Forms
   =================================== */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--dark-color);
  font-size: 14px;
}

.form-control, .form-select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-size: 14px;
  transition: var(--transition);
  background: #fff;
  color: var(--dark-color);
}

.form-control:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

.form-control::placeholder {
  color: #9ca3af;
}

/* ===================================
   Tables
   =================================== */
.table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

.table thead {
  background: var(--light-color);
}

.table th {
  padding: 16px;
  text-align: left;
  font-weight: 600;
  color: var(--dark-color);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table td {
  padding: 16px;
  border-top: 1px solid #e5e7eb;
  color: #6b7280;
}

.table tbody tr:hover {
  background: var(--light-color);
}

/* ===================================
   Badges
   =================================== */
.badge {
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  display: inline-block;
}

.badge-primary {
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary-color);
}

.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--secondary-color);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning-color);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger-color);
}

/* ===================================
   Footer
   =================================== */
.footer {
  padding: 16px 32px;
  background: #fff;
  border-top: 1px solid #e5e7eb;
  margin-top: auto;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: #9ca3af;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .mobile-toggle {
    display: block;
  }
}

@media (max-width: 768px) {
  .content-wrapper {
    padding: 20px;
  }
  
  .top-bar {
    padding: 0 16px;
  }
  
  .page-title {
    font-size: 20px;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .stat-value {
    font-size: 28px;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

/* ===================================
   Utility Classes
   =================================== */
.text-center {
  text-align: center;
}

.text-muted {
  color: #6b7280;
}

.mb-3 {
  margin-bottom: 1rem;
}

.mt-3 {
  margin-top: 1rem;
}

.d-flex {
  display: flex;
}

.align-items-center {
  align-items: center;
}

.justify-content-between {
  justify-content: space-between;
}

.gap-3 {
  gap: 1rem;
}