:root {
  --primary: #4f46e5;
  --primary-light: #6366f1;
  --primary-dark: #3730a3;
  --primary-bg: rgba(79, 70, 229, 0.08);
  --success: #10b981;
  --success-light: rgba(16, 185, 129, 0.12);
  --danger: #ef4444;
  --danger-light: rgba(239, 68, 68, 0.12);
  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.12);
  --info: #06b6d4;
  --info-light: rgba(6, 182, 212, 0.12);

  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.06), 0 4px 6px rgba(0, 0, 0, 0.04);
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

body.dark-mode {
  --primary: #818cf8;
  --primary-light: #6366f1;
  --primary-dark: #a5b4fc;
  --primary-bg: rgba(129, 140, 248, 0.1);
  --success: #34d399;
  --success-light: rgba(52, 211, 153, 0.12);
  --danger: #f87171;
  --danger-light: rgba(248, 113, 113, 0.12);
  --warning: #fbbf24;
  --warning-light: rgba(251, 191, 36, 0.12);
  --info: #22d3ee;
  --info-light: rgba(34, 211, 238, 0.12);

  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: #1e293b;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #334155;
  --border-light: #1e293b;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3), 0 4px 6px rgba(0, 0, 0, 0.2);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
}

.header {
  background: var(--bg-card);
  padding: 20px 28px;
  border-radius: var(--radius-lg);
  margin-bottom: 28px;
  box-shadow: var(--shadow);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  border: 1px solid var(--border-color);
  transition: box-shadow var(--transition);
}

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

.header h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.3px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
}

.nav a:hover {
  color: var(--primary);
  background: var(--primary-bg);
}

.theme-toggle {
  background: var(--bg-tertiary);
  border: none;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  cursor: pointer;
  color: var(--text-primary);
  transition: all var(--transition);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--primary);
  color: white;
  transform: rotate(15deg);
}

.content {
  background: var(--bg-card);
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.content h2 {
  margin-bottom: 24px;
  color: var(--text-primary);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.2px;
}

.content h3 {
  margin-bottom: 16px;
  color: var(--text-primary);
  font-size: 17px;
  font-weight: 600;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  line-height: 1.4;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

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

.btn-primary:hover {
  background: var(--primary-light);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

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

.btn-success:hover {
  background: #059669;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

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

.btn-danger:hover {
  background: #dc2626;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.btn-warning {
  background: var(--warning);
  color: #1e293b;
}

.btn-warning:hover {
  background: #d97706;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

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

.btn-info:hover {
  background: #0891b2;
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.3);
}

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

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

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: var(--radius);
}

.alert {
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  font-size: 14px;
  line-height: 1.5;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.alert::before {
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 1px;
}

.alert-success {
  background: var(--success-light);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-success::before {
  content: "✓";
}

.alert-error {
  background: var(--danger-light);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-error::before {
  content: "✕";
}

.alert-info {
  background: var(--primary-bg);
  color: var(--primary);
  border: 1px solid rgba(79, 70, 229, 0.2);
}

.alert-info::before {
  content: "ℹ";
}

.alert-warning {
  background: var(--warning-light);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.alert-warning::before {
  content: "⚠";
}

.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  margin-bottom: 32px;
  background: var(--bg-secondary);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.upload-area::before {
  content: "↑";
  display: block;
  font-size: 40px;
  color: var(--text-muted);
  margin-bottom: 12px;
  transition: color var(--transition);
}

.upload-area:hover,
.upload-area.dragover {
  border-color: var(--primary);
  background: var(--primary-bg);
}

.upload-area:hover::before,
.upload-area.dragover::before {
  color: var(--primary);
}

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

.upload-area p:last-child {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 8px;
}

.file-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 22px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  transition: all var(--transition);
  flex-wrap: wrap;
  gap: 14px;
}

.file-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.file-info {
  display: flex;
  gap: 18px;
  align-items: center;
  flex: 1;
  min-width: 200px;
}

.file-icon {
  font-size: 36px;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

.file-details h4 {
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.file-details p {
  color: var(--text-secondary);
  font-size: 13px;
}

.file-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-color);
}

th, td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  font-size: 14px;
}

th {
  background: var(--bg-tertiary);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: var(--bg-tertiary);
}

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 28px;
}

.pagination a,
.pagination span {
  padding: 9px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition);
  font-size: 14px;
  font-weight: 500;
  min-width: 40px;
  text-align: center;
}

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

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

.form-group {
  margin-bottom: 22px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 14px;
  transition: all var(--transition);
  font-family: var(--font-sans);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group small {
  display: block;
  margin-top: 6px;
  color: var(--text-muted);
  font-size: 13px;
}

.auth-box {
  max-width: 420px;
  margin: 60px auto;
  padding: 40px;
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

.auth-box h2 {
  text-align: center;
  margin-bottom: 32px;
  font-size: 24px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin: 24px 0;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: all var(--transition);
}

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

.stat-card h3 {
  font-size: 30px;
  color: var(--primary);
  margin-bottom: 6px;
  font-weight: 700;
}

.stat-card p {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.chart-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
}

.chart-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  height: 200px;
  gap: 12px;
  padding: 16px 8px;
  overflow-x: auto;
}

.bar-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 36px;
}

.bar {
  width: 100%;
  max-width: 44px;
  background: linear-gradient(180deg, var(--primary-light), var(--primary));
  border-radius: 4px 4px 0 0;
  transition: all var(--transition);
  min-height: 4px;
}

.bar:hover {
  opacity: 0.8;
  transform: translateY(-2px);
}

.bar-label {
  font-size: 11px;
  margin-top: 8px;
  color: var(--text-secondary);
  text-align: center;
}

.bar-value {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 4px;
}

.region-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.region-item {
  background: var(--bg-tertiary);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.region-item:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.no-data {
  text-align: center;
  color: var(--text-muted);
  padding: 48px 24px;
  font-size: 15px;
}

.rename-input {
  width: 280px;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-sans);
}

.rename-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

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

.copy-btn:hover {
  background: #059669;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.file-subtitle {
  color: var(--text-secondary);
  margin-bottom: 25px;
  font-size: 14px;
}

.filter-bar {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 18px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--bg-primary);
  color: var(--text-secondary);
  transition: all var(--transition);
  font-size: 13px;
  font-weight: 500;
}

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

.filter-btn:hover:not(.active) {
  border-color: var(--primary);
  color: var(--primary);
}

.date-input {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.4;
}

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

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

.badge-info {
  background: var(--info-light);
  color: var(--info);
}

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

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(4px);
}

.modal.show {
  display: flex;
}

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: 32px;
  max-width: 580px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  animation: modalIn 0.25s ease;
}

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

.modal-content h3 {
  margin-bottom: 24px;
  font-size: 18px;
}

.checkbox-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.checkbox-group label {
  cursor: pointer;
  margin-bottom: 0;
}

.recycle-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.recycle-header p {
  color: var(--text-secondary);
  font-size: 14px;
}

.rename-input {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
}

.edit-mode .file-name {
  display: none;
}

.edit-mode .rename-form {
  display: inline-block;
}

.view-mode .rename-form {
  display: none;
}

@media (max-width: 768px) {
  .container {
    padding: 12px;
  }

  .header {
    flex-direction: column;
    text-align: center;
    padding: 16px 18px;
  }

  .nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px;
  }

  .nav a {
    padding: 6px 12px;
    font-size: 13px;
  }

  .content {
    padding: 20px;
  }

  .file-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .file-actions {
    width: 100%;
  }

  .auth-box {
    margin: 30px auto;
    padding: 28px 24px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat-card {
    padding: 16px;
  }

  .stat-card h3 {
    font-size: 24px;
  }

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

  .modal-content {
    padding: 24px;
  }

  .upload-area {
    padding: 32px 16px;
  }
}

.rename-input {
  width: 280px;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 14px;
}

.rename-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

.copy-btn {
  background: var(--success) !important;
  color: white !important;
}

.copy-btn:hover {
  background: #059669 !important;
}

.edit-mode .file-name {
  display: none;
}

.edit-mode .rename-form {
  display: inline-block;
}

.view-mode .rename-form {
  display: none;
}

.file-subtitle {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.nav a.active {
  color: var(--primary);
  background: var(--primary-bg);
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin: 20px 0;
}

.plan-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
  transition: all var(--transition);
}

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

.plan-name {
  font-size: 20px;
  font-weight: bold;
  color: var(--primary);
  margin-bottom: 10px;
}

.plan-price {
  font-size: 28px;
  font-weight: bold;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.plan-feature {
  display: flex;
  align-items: center;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.plan-feature.enabled {
  color: var(--success);
}

.plan-feature.disabled {
  color: var(--danger);
}

.section {
  margin-top: 40px;
}

.region-tag {
  display: inline-block;
  padding: 5px 12px;
  background: var(--bg-tertiary);
  border-radius: 20px;
  margin: 4px;
  font-size: 13px;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .nav a {
    font-size: 12px;
    padding: 5px 10px;
  }

  .header h1 {
    font-size: 18px;
  }
}

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

.sidebar {
  width: 260px;
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  color: #cbd5e1;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  overflow-y: auto;
  overflow-x: hidden;
  transition: transform 0.3s ease;
}

body.dark-mode .sidebar {
  background: linear-gradient(180deg, #0b1120 0%, #16213e 100%);
}

.sidebar-header {
  padding: 24px 20px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-header .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: white;
  flex-shrink: 0;
}

.sidebar-header .logo-text {
  font-size: 18px;
  font-weight: 700;
  color: #f1f5f9;
  letter-spacing: -0.3px;
}

.sidebar-header .logo-sub {
  font-size: 11px;
  color: #64748b;
  margin-top: 1px;
}

.sidebar-nav {
  padding: 12px 10px;
  flex: 1;
}

.nav-group {
  margin-bottom: 8px;
}

.nav-group-title {
  font-size: 11px;
  font-weight: 600;
  color: #475569;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 8px 12px 6px;
}

.sidebar-nav .nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  color: #94a3b8;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s ease;
  margin-bottom: 1px;
  position: relative;
}

.sidebar-nav .nav-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #e2e8f0;
}

.sidebar-nav .nav-item.active {
  background: var(--primary);
  color: white;
  font-weight: 600;
}

.sidebar-nav .nav-item.active::before {
  display: none;
}

.sidebar-nav .nav-item .nav-icon {
  font-size: 16px;
  width: 22px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-nav .nav-item .nav-badge {
  margin-left: auto;
  font-size: 11px;
  background: rgba(255, 255, 255, 0.1);
  padding: 1px 8px;
  border-radius: 10px;
  color: #94a3b8;
}

.sidebar-nav .nav-item.active .nav-badge {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

.sidebar-footer {
  padding: 16px 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-footer .nav-item {
  color: #64748b;
  font-size: 13px;
}

.sidebar-footer .nav-item:hover {
  color: #e2e8f0;
  background: rgba(255, 255, 255, 0.06);
}

.main-content {
  flex: 1;
  margin-left: 260px;
  min-height: 100vh;
  background: var(--bg-secondary);
}

.top-bar {
  background: var(--bg-card);
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
}

.top-bar h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

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

.sidebar-toggle {
  display: none;
  background: var(--bg-tertiary);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--text-primary);
  font-size: 20px;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 99;
}

.sidebar-overlay.show {
  display: block;
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
  }
  .sidebar-toggle {
    display: flex;
  }
  .top-bar {
    padding: 12px 16px;
  }
}

.hero-section {
  text-align: center;
  padding: 48px 20px 32px;
}

.hero-section .hero-icon {
  font-size: 56px;
  display: block;
  margin-bottom: 16px;
}

.hero-section h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.hero-section .hero-desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto 24px;
  line-height: 1.6;
}

.hero-section .hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.feature-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin: 24px 0 32px;
  padding: 20px 24px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
}

.feature-bar .feature-item {
  text-align: center;
}

.feature-bar .feature-item .feature-icon {
  font-size: 24px;
  display: block;
  margin-bottom: 6px;
}

.feature-bar .feature-item .feature-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.site-footer {
  text-align: center;
  padding: 24px;
  color: var(--text-muted);
  font-size: 13px;
}

.site-footer a {
  color: var(--primary);
  text-decoration: none;
}

.toast-container { position: fixed; top: 20px; right: 20px; z-index: 99999; display: flex; flex-direction: column; gap: 10px; }
.toast { padding: 14px 20px; border-radius: 10px; color: #fff; font-size: 14px; font-weight: 500; box-shadow: 0 4px 20px rgba(0,0,0,.15); animation: toastIn .3s ease; max-width: 360px; display: flex; align-items: center; gap: 10px; }
.toast.success { background: #10b981; }
.toast.error { background: #ef4444; }
.toast.info { background: #3b82f6; }
.toast.warning { background: #f59e0b; }
@keyframes toastIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes toastOut { from { transform: translateX(0); opacity: 1; } to { transform: translateX(100%); opacity: 0; } }
.sys-modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 99998; display: none; align-items: center; justify-content: center; backdrop-filter: blur(2px); }
.sys-modal-overlay.show { display: flex; }
.sys-modal { background: var(--bg-card, #fff); border-radius: 16px; padding: 28px; max-width: 400px; width: 90%; box-shadow: 0 20px 60px rgba(0,0,0,.2); animation: modalIn .25s ease; text-align: center; }
.sys-modal .modal-icon { font-size: 40px; margin-bottom: 12px; }
.sys-modal h3 { font-size: 18px; margin: 0 0 8px; color: var(--text-primary, #0f172a); }
.sys-modal p { font-size: 14px; color: var(--text-secondary, #64748b); margin: 0 0 20px; line-height: 1.5; }
.sys-modal .modal-actions { display: flex; gap: 10px; justify-content: center; }
.sys-modal .modal-actions .btn { min-width: 80px; padding: 10px 24px; border-radius: 8px; font-size: 14px; font-weight: 600; cursor: pointer; border: none; }
.sys-modal .modal-actions .btn-primary { background: var(--primary, #4f46e5); color: #fff; }
.sys-modal .modal-actions .btn-secondary { background: var(--bg-tertiary, #f1f5f9); color: var(--text-primary, #0f172a); }
.sys-modal .modal-actions .btn-danger { background: #ef4444; color: #fff; }
@keyframes modalIn { from { transform: scale(.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }