:root {
      --primary: #3b82f6;
      --primary-dark: #2563eb;
      --secondary: #64748b;
      --success: #10b981;
      --danger: #ef4444;
      --warning: #f59e0b;
      --background: #f8fafc;
      --surface: #ffffff;
      --surface-hover: #f1f5f9;
      --text: #0f172a;
      --text-secondary: #64748b;
      --border: #e2e8f0;
      --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
      --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
      --radius: 8px;
      --radius-lg: 12px;
    }

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

    body {
      font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
      background: var(--background);
      color: var(--text);
      line-height: 1.6;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1rem;
    }

    /* Header */
    .header {
      background: var(--surface);
      border-bottom: 1px solid var(--border);
      padding: 1rem 0;
      position: sticky;
      top: 0;
      z-index: 100;
      backdrop-filter: blur(8px);
    }

    .header-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 1rem;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      color: var(--primary);
      font-size: 1.5rem;
      font-weight: 700;
      text-decoration: none;
    }

    /* Search and Actions */
    .search-section {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      flex: 1;
      max-width: 600px;
    }

    .search-container {
      position: relative;
      flex: 1;
    }

    .search-input {
      width: 100%;
      padding: 0.75rem 1rem 0.75rem 2.5rem;
      border: 2px solid var(--border);
      border-radius: var(--radius);
      font-size: 1rem;
      transition: all 0.2s;
      background: var(--surface);
    }

    .search-input:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
    }

    .search-icon {
      position: absolute;
      left: 0.75rem;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-secondary);
      pointer-events: none;
      font-size: 1.1rem;
    }

    .add-word-btn {
      background: var(--primary);
      color: white;
      border: none;
      padding: 0.75rem 1.5rem;
      border-radius: var(--radius);
      font-weight: 600;
      cursor: pointer;
      transition: all 0.2s;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      white-space: nowrap;
    }

    .add-word-btn:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
    }

    /* Modal */
    .modal {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.5);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 1000;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s;
      padding: 1rem;
    }

    .modal.active {
      opacity: 1;
      pointer-events: all;
    }

    .modal-content {
      background: var(--surface);
      border-radius: var(--radius-lg);
      width: 100%;
      max-width: 500px;
      max-height: 90vh;
      overflow-y: auto;
      transform: scale(0.9);
      transition: transform 0.3s;
      box-shadow: var(--shadow-lg);
    }

    .modal.active .modal-content {
      transform: scale(1);
    }

    .modal-header {
      padding: 1.5rem;
      border-bottom: 1px solid var(--border);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .modal-title {
      font-size: 1.25rem;
      font-weight: 600;
      color: var(--text);
    }

    .close-btn {
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--text-secondary);
      padding: 0.25rem;
      border-radius: var(--radius);
      transition: all 0.2s;
    }

    .close-btn:hover {
      background: var(--surface-hover);
      color: var(--text);
    }

    .modal-body {
      padding: 1.5rem;
    }

    /* Form */
    .form-group {
      margin-bottom: 1.25rem;
    }

    .form-label {
      display: block;
      margin-bottom: 0.5rem;
      font-weight: 500;
      color: var(--text);
    }

    .form-input,
    .form-textarea {
      width: 100%;
      padding: 0.75rem;
      border: 2px solid var(--border);
      border-radius: var(--radius);
      font-size: 1rem;
      transition: all 0.2s;
      font-family: inherit;
      background: var(--surface);
    }

    .form-input:focus,
    .form-textarea:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
    }

    .form-textarea {
      resize: vertical;
      min-height: 100px;
    }

    .submit-btn {
      width: 100%;
      background: var(--primary);
      color: white;
      border: none;
      padding: 0.875rem;
      border-radius: var(--radius);
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.2s;
    }

    .submit-btn:hover {
      background: var(--primary-dark);
    }

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

    /* Main Content */
    .main {
      padding: 2rem 0;
      min-height: calc(100vh - 140px);
    }

    .stats {
      background: var(--surface);
      border-radius: var(--radius-lg);
      padding: 1rem 1.5rem;
      margin-bottom: 2rem;
      box-shadow: var(--shadow);
    }

    .stats-grid {
      display: flex;
      justify-content: space-around;
      align-items: center;
      flex-wrap: wrap;
      gap: 1.5rem;
    }

    .stat-item {
      display: flex;
      align-items: center;
      gap: 0.6rem;
    }
    
    .stat-item i {
        color: var(--secondary);
        font-size: 1.2rem;
    }

    .stat-number {
      font-size: 1.25rem;
      font-weight: 600;
      color: var(--text);
    }

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

    /* Word Grid */
    .words-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
      gap: 1.5rem;
    }

    .word-card {
      background: var(--surface);
      border-radius: var(--radius-lg);
      padding: 1.5rem;
      box-shadow: var(--shadow);
      transition: all 0.2s;
      position: relative;
      border: 1px solid var(--border);
    }

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

    .word-header {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin-bottom: 1rem;
    }

    .word-title {
      font-size: 1.25rem;
      font-weight: 600;
      color: var(--primary);
      margin: 0;
    }

    .delete-btn {
      background: transparent;
      color: var(--danger);
      border: none;
      width: 36px;
      height: 36px;
      border-radius: 50%;
      cursor: pointer;
      font-size: 1rem;
      transition: all 0.2s;
      display: inline-flex;
      align-items: center;
      justify-content: center;
    }

    .delete-btn:hover {
      background: #fee2e2;
    }

    .word-definition {
      color: var(--text);
      margin-bottom: 1rem;
      line-height: 1.5;
    }

    .word-meta {
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
      padding-top: 1rem;
      border-top: 1px solid var(--border);
      font-size: 0.875rem;
      color: var(--text-secondary);
    }

    .word-meta > div {
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }
    
    .word-meta i {
        color: var(--secondary);
        width: 16px;
        text-align: center;
    }

    /*dropdown for countries */
    /* Country dropdown styles */
.country-input-container {
  position: relative;
}

.country-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--surface);
  border: 2px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  max-height: 200px;
  overflow-y: auto;
  z-index: 1001;
  display: none;
  box-shadow: var(--shadow-lg);
}

.country-dropdown.show {
  display: block;
}

.country-option {
  padding: 0.75rem 1rem;
  cursor: pointer;
  transition: background-color 0.2s;
  border-bottom: 1px solid var(--border);
}

.country-option:last-child {
  border-bottom: none;
}

.country-option:hover,
.country-option.highlighted {
  background: var(--surface-hover);
}

.country-option:active {
  background: var(--primary);
  color: white;
}

    /* Empty State */
    .empty-state {
      text-align: center;
      padding: 3rem 1rem;
      color: var(--text-secondary);
    }

    .empty-state-icon {
      font-size: 4rem;
      margin-bottom: 1rem;
    }

    .empty-state-title {
      font-size: 1.25rem;
      font-weight: 600;
      margin-bottom: 0.5rem;
      color: var(--text);
    }

    /* Footer */
    .footer {
      background: var(--surface);
      border-top: 1px solid var(--border);
      padding: 2rem 0;
      text-align: center;
      color: var(--text-secondary);
    }

    .brand {
      color: var(--primary);
      text-decoration: none;
      font-weight: 600;
    }

    /* Loading State */
    .loading {
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 3rem;
    }

    .spinner {
      width: 32px;
      height: 32px;
      border: 3px solid var(--border);
      border-top-color: var(--primary);
      border-radius: 50%;
      animation: spin 1s ease-in-out infinite;
    }

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

    /* Responsive Design */
    @media (max-width: 768px) {
      .header-content {
        flex-direction: column;
        gap: 1rem;
      }

      .search-section {
        width: 100%;
        max-width: none;
      }

      .logo {
        font-size: 1.25rem;
      }

      .words-grid {
        grid-template-columns: 1fr;
      }
      
      .add-word-btn .btn-text {
        display: none;
      }
      
      .add-word-btn {
        padding: 0.75rem;
        min-width: 44px;
        aspect-ratio: 1/1;
        justify-content: center;
      }

      .modal {
        padding: 0.5rem;
      }
    }

    @media (max-width: 480px) {
      .container {
        padding: 0 0.75rem;
      }

      .word-card {
        padding: 1rem;
      }
    }

    /* Accessibility */
    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }
    }

    /* Focus styles for better accessibility */
    .add-word-btn:focus-visible,
    .delete-btn:focus-visible,
    .submit-btn:focus-visible,
    .close-btn:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }