/* Skills-specific styles - Optimized for Performance */
    .skills-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
      gap: 2rem;
      margin-top: 3rem;
      background: rgba(30, 41, 59, 0.6);
      border: 1px solid rgba(148, 163, 184, 0.15);
      border-radius: 20px;
      padding: 2.5rem;
      /* Removed backdrop-filter for better performance */
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    }

    [data-theme="light"] .skills-grid {
      background: #f6f8fa;
      border: 1px solid #e5e7eb;
      box-shadow: 0 4px 24px rgba(5, 150, 105, 0.06);
    }

    .skill-category {
      background: var(--glass);
      border: 1px solid var(--glass-border);
      border-radius: 16px;
      padding: 2rem;
      transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
      position: relative;
      /* Use will-change only when hovering */
    }

    .skill-category::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--accent);
      transform: scaleX(0);
      transition: transform 0.2s ease;
      transform-origin: left;
    }

    .skill-category:hover {
      will-change: transform;
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--accent);
    }

    .skill-category:hover::before {
      transform: scaleX(1);
    }

    /* Remove will-change after animation */
    .skill-category:not(:hover) {
      will-change: auto;
    }

    [data-theme="light"] .skill-category {
      background: #f3f4f6;
      border: 1.5px solid #e5e7eb;
      box-shadow: 0 2px 12px rgba(5, 150, 105, 0.07);
    }

    [data-theme="light"] .skill-category:hover {
      background: #f9fafb;
      box-shadow: 0 8px 32px rgba(5, 150, 105, 0.12);
      border-color: var(--accent);
    }

    .category-header {
      display: flex;
      align-items: center;
      gap: 1rem;
      margin-bottom: 1.5rem;
      padding-bottom: 1rem;
      border-bottom: 1px solid var(--glass-border);
    }

    .category-icon {
      width: 48px;
      height: 48px;
      background: var(--accent);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      color: var(--bg-primary);
      font-weight: 700;
      font-family: 'JetBrains Mono', monospace;
      /* Simplified background for better performance */
    }

    [data-theme="light"] .category-icon {
      background: var(--accent);
      color: #fff;
      border: 1.5px solid #e5e7eb;
      box-shadow: 0 2px 8px rgba(5, 150, 105, 0.08);
    }

    .category-title {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-primary);
      font-family: 'JetBrains Mono', monospace;
    }

    .skills-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 1rem;
    }

    .skill-item {
      padding: 1rem;
      background: var(--glass-hover);
      border-radius: 10px;
      border-left: 3px solid var(--accent);
      transition: background-color 0.2s ease, border-left-color 0.2s ease, transform 0.2s ease;
      cursor: pointer;
    }

    .skill-item:hover {
      will-change: transform;
      background: var(--glass-border);
      border-left-color: var(--accent-light);
      transform: translateX(4px);
    }

    .skill-item:not(:hover) {
      will-change: auto;
    }

    [data-theme="light"] .skill-item {
      background: rgba(5, 150, 105, 0.03);
      border-left-color: var(--accent);
    }

    [data-theme="light"] .skill-item:hover {
      background: rgba(5, 150, 105, 0.08);
    }

    .skill-name {
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 0.5rem;
      font-size: 1rem;
    }

    .skill-description {
      color: var(--text-muted);
      font-size: 0.9rem;
      line-height: 1.5;
    }

    .toolkit-section {
      margin-top: 4rem;
      padding: 3rem 2.5rem;
      border-top: 1px solid var(--glass-border);
      background: rgba(30, 41, 59, 0.6);
      border: 1px solid rgba(148, 163, 184, 0.15);
      border-radius: 20px;
      /* Removed backdrop-filter for better performance */
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    }

    [data-theme="light"] .toolkit-section {
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid rgba(5, 150, 105, 0.1);
      box-shadow: 0 8px 32px rgba(5, 150, 105, 0.08);
    }

    .toolkit-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      grid-template-rows: repeat(2, 1fr);
      gap: 1.5rem;
      margin-top: 2rem;
    }

    .tool-item {
      background: var(--glass);
      border: 1px solid var(--glass-border);
      border-radius: 12px;
      padding: 1.5rem;
      text-align: center;
      transition: transform 0.2s ease, border-color 0.2s ease;
      position: relative;
    }

    /* Simplified hover effects - removed complex pseudo-elements */
    .tool-item::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: width 0.2s ease;
      transform: translateX(-50%);
    }

    .tool-item:hover {
      will-change: transform;
      transform: translateY(-2px);
      border-color: var(--accent);
    }

    .tool-item:hover::after {
      width: 80%;
    }

    .tool-item:not(:hover) {
      will-change: auto;
    }

    [data-theme="light"] .tool-item {
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid rgba(5, 150, 105, 0.15);
    }

    [data-theme="light"] .tool-item:hover {
      background: rgba(255, 255, 255, 0.95);
      border-color: var(--accent);
    }

    .tool-name {
      font-weight: 600;
      color: var(--text-primary);
      font-family: 'JetBrains Mono', monospace;
      font-size: 0.9rem;
    }

    .hero-skills {
      text-align: center;
      margin-bottom: 3rem;
      position: relative;
    }

    .hero-skills h1 {
      font-size: 2.5rem;
      font-weight: 700;
      margin-bottom: 1rem;
      color: var(--text-primary);
    }

    .hero-skills .subtitle {
      color: var(--accent);
      font-family: 'JetBrains Mono', monospace;
      font-size: 1.1rem;
      font-weight: 600;
      margin-bottom: 1.5rem;
    }

    .hero-skills .description {
      color: var(--text-muted);
      max-width: 600px;
      margin: 0 auto;
      font-size: 1.1rem;
      line-height: 1.7;
    }

    .section-title {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 1rem;
      text-align: center;
      position: relative;
    }

    .section-title::after {
      content: '';
      position: absolute;
      bottom: -0.5rem;
      left: 50%;
      width: 60px;
      height: 3px;
      background: var(--accent);
      transform: translateX(-50%);
      border-radius: 2px;
    }

    /* Optimized blinking cursor animation */
    .blinking-cursor {
      color: var(--accent);
      animation: blink 1.5s infinite;
      font-weight: normal;
    }

    @keyframes blink {
      0%, 60% { opacity: 1; }
      61%, 100% { opacity: 0; }
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
      .skills-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
      }
      
      .skill-category {
        padding: 1.5rem;
      }
      
      .toolkit-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(4, 1fr);
        gap: 1rem;
      }
      
      .hero-skills h1 {
        font-size: 2rem;
      }
    }

    @media (max-width: 480px) {
      .skills-grid {
        grid-template-columns: 1fr;
      }
      
      .toolkit-section {
        padding: 1.2rem 0.5rem;
        border-radius: 12px;
        margin-top: 2rem;
      }
      .toolkit-grid {
        grid-template-columns: 1fr;
        grid-template-rows: none;
        gap: 0.7rem;
        margin-top: 1rem;
      }
      .tool-item {
        padding: 1rem 0.5rem;
        font-size: 0.95rem;
        border-radius: 10px;
      }
      .tool-name {
        font-size: 0.95rem;
      }
    }

    /* Optimized initial state for animations */
    .page-loaded .skill-category,
    .page-loaded .tool-item {
      opacity: 1;
      transform: translateY(0);
    }

    /* Performance optimization: Reduce paint on scroll */
    .skill-category,
    .tool-item {
      contain: layout style paint;
    }

    /* Use GPU acceleration only when needed */
    @media (hover: hover) {
      .skill-category:hover,
      .skill-item:hover,
      .tool-item:hover {
        transform: translateZ(0);
      }
    }

    main, .main, .section {
      margin-top: 50px;
    }

    /* Single-page layout adjustments for skills section */
    #skills .hero-skills {
      padding-top: 2rem;
    }

    #skills .skills-grid {
      margin-top: 2rem;
    }

    /* Ensure skills section fits well in single-page layout */
    #skills {
      min-height: auto;
      padding-bottom: 4rem;
    }