/* CSS Variables for consistent theming */
        :root {
            --ach-primary-color: #2c3e50;
            --ach-secondary-color: #34495e;
            --ach-accent-color: #3498db;
            --ach-light-color: #ecf0f1;
            --ach-card-bg: #ffffff;
            --ach-border-color: #ddd;
            --ach-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --ach-shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.12);
            --ach-radius: 12px;
            --ach-transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }
        
        /* Reset and base styles */
        .ach-html {
            scroll-behavior: smooth;
            margin-top: 0 !important;
        }
        
        .ach-body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: var(--ach-light-color);
            color: var(--ach-primary-color);
            line-height: 1.6;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
        
        .ach-body * {
            box-sizing: border-box;
        }
        
        /* Container */
        .ach-container {
            max-width: 1400px;
            margin: 0 auto;
            background: var(--ach-card-bg);
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
            min-height: 100vh;
        }
        
        /* Header */
        .ach-header {
            background: var(--ach-card-bg);
            padding: 1.5rem 2rem;
            border-bottom: 2px solid var(--ach-border-color);
            position: sticky;
            top: 0;
            z-index: 90;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }
        
        .ach-header-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
            gap: 1.5rem;
        }
        
        /* Search Bar */
        .ach-search-container {
            position: relative;
            width: 100%;
            max-width: 500px;
        }
        
        .ach-search-input {
            width: 100%;
            padding: 0.9rem 1rem 0.9rem 2.8rem;
            border: 2px solid var(--ach-border-color);
            border-radius: 50px;
            font-size: 1rem;
            background-color: var(--ach-card-bg);
            color: var(--ach-primary-color);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            transition: var(--ach-transition);
        }
        
        .ach-search-input:focus {
            border-color: var(--ach-accent-color);
            outline: none;
            box-shadow: 0 4px 12px rgba(52, 152, 219, 0.15);
        }
        
        .ach-search-icon {
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--ach-secondary-color);
            font-size: 1.1rem;
            z-index: 1;
        }
        
        /* Search Results */
        .ach-search-results {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: var(--ach-card-bg);
            border-radius: var(--ach-radius);
            margin-top: 0.5rem;
            padding: 1rem;
            box-shadow: var(--ach-shadow-hover);
            z-index: 10000;
            max-height: 400px;
            overflow-y: auto;
            border: 1px solid var(--ach-border-color);
        }
        
        .ach-search-results.active {
            display: block !important;
        }
        
        .ach-search-result-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem;
            border-radius: var(--ach-radius);
            text-decoration: none;
            color: var(--ach-primary-color);
            transition: var(--ach-transition);
            border-bottom: 1px solid var(--ach-border-color);
            background: var(--ach-card-bg);
        }
        
        .ach-search-result-item:last-child {
            border-bottom: none;
        }
        
        .ach-search-result-item:hover {
            background: var(--ach-light-color);
            color: var(--ach-accent-color);
            transform: translateX(5px);
        }
        
        .ach-search-result-icon {
            font-size: 1.5rem;
            color: var(--ach-accent-color);
            width: 40px;
            text-align: center;
            flex-shrink: 0;
        }
        
        .ach-search-result-content {
            flex: 1;
            min-width: 0;
        }
        
        .ach-search-result-title {
            font-weight: 600;
            margin-bottom: 0.25rem;
            font-size: 1.1rem;
        }
        
        .ach-search-result-category {
            font-size: 0.8rem;
            color: var(--ach-secondary-color);
            background: var(--ach-light-color);
            padding: 0.2rem 0.5rem;
            border-radius: 20px;
            display: inline-block;
            margin-bottom: 0.5rem;
        }
        
        .ach-search-result-description {
            font-size: 0.9rem;
            color: var(--ach-secondary-color);
            margin-top: 0.25rem;
            line-height: 1.4;
        }
        
        .ach-search-no-results {
            padding: 1rem;
            text-align: center;
            color: var(--ach-secondary-color);
            font-style: italic;
        }
        
        /* Category Navigation */
        .ach-category-nav {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
            margin-top: 1rem;
        }
        
        .ach-category-btn {
            padding: 0.7rem 1.5rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--ach-transition);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            text-decoration: none;
            background: var(--ach-light-color);
            color: var(--ach-secondary-color);
        }
        
        .ach-category-btn:hover {
            background: var(--ach-accent-color);
            color: white;
            transform: translateY(-2px);
        }
        
        .ach-category-btn.active {
            background: var(--ach-accent-color);
            color: white;
        }
        
        /* Main Content */
        .ach-main-content {
            padding: 2rem;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        /* Hero Section */
        .ach-hero {
            text-align: center;
            padding: 3rem 1rem;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ed 100%);
            border-radius: var(--ach-radius);
            margin-bottom: 3rem;
            box-shadow: var(--ach-shadow);
        }
        
        .ach-hero-title {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--ach-primary-color);
            font-weight: 700;
        }
        
        .ach-hero-description {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 2rem;
            color: var(--ach-secondary-color);
        }
        
        .ach-hero-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .ach-btn {
            padding: 0.9rem 1.8rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--ach-transition);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            text-decoration: none;
        }
        
        .ach-btn-primary {
            background: var(--ach-accent-color);
            color: white;
            box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
        }
        
        .ach-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(52, 152, 219, 0.4);
        }
        
        .ach-btn-secondary {
            background: var(--ach-primary-color);
            color: white;
            box-shadow: 0 4px 10px rgba(44, 62, 80, 0.3);
        }
        
        .ach-btn-secondary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(44, 62, 80, 0.4);
        }
        
        .ach-btn-tertiary {
            background: transparent;
            color: var(--ach-accent-color);
            border: 2px solid var(--ach-accent-color);
            box-shadow: 0 4px 10px rgba(52, 152, 219, 0.1);
        }
        
        .ach-btn-tertiary:hover {
            transform: translateY(-3px);
            background: var(--ach-accent-color);
            color: white;
            box-shadow: 0 6px 15px rgba(52, 152, 219, 0.3);
        }
        
        /* Section Titles */
        .ach-section-title {
            color: var(--ach-primary-color);
            margin-bottom: 1.5rem;
            font-size: 1.8rem;
            text-align: center;
            position: relative;
            padding-bottom: 0.75rem;
        }
        
        .ach-section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--ach-accent-color);
            border-radius: 2px;
        }
        
        /* Calculator Grid */
        .ach-calculator-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
            margin-top: 1.5rem;
        }
        
        .ach-calculator-card {
            background: var(--ach-card-bg);
            border-radius: var(--ach-radius);
            padding: 1.5rem;
            box-shadow: var(--ach-shadow);
            transition: var(--ach-transition);
            border: 1px solid var(--ach-border-color);
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        
        .ach-calculator-card:hover {
            transform: translateY(-7px);
            box-shadow: var(--ach-shadow-hover);
        }
        
        .ach-calculator-card:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--ach-accent-color);
        }
        
        .ach-calculator-icon {
            font-size: 2.5rem;
            color: var(--ach-accent-color);
            margin-bottom: 1rem;
        }
        
        .ach-calculator-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--ach-primary-color);
            margin-bottom: 0.75rem;
            line-height: 1.3;
        }
        
        .ach-calculator-description {
            color: var(--ach-secondary-color);
            font-size: 0.95rem;
            flex-grow: 1;
            line-height: 1.5;
            margin-bottom: 1rem;
        }
        
        .ach-calculator-status {
            display: inline-block;
            padding: 0.4rem 0.8rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            align-self: flex-start;
        }
        
        .ach-status-available {
            background-color: #d4edda;
            color: #155724;
        }
        
        .ach-status-coming {
            background-color: #fff3cd;
            color: #856404;
        }
        
        .ach-status-under-construction {
            background-color: #f8d7da;
            color: #721c24;
        }
        
        /* Category Section */
        .ach-category-section {
            margin-bottom: 3rem;
        }
        
        .ach-category-title {
            display: flex;
            align-items: center;
            color: var(--ach-accent-color);
            margin-bottom: 1.5rem;
            font-size: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--ach-border-color);
        }
        
        .ach-category-title i {
            margin-right: 0.75rem;
            font-size: 1.3rem;
        }
        
        /* Back to Top Button */
        .ach-back-to-top {
            position: fixed;
            bottom: 5rem;
            right: 2rem;
            background: var(--ach-accent-color);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
            cursor: pointer;
            transition: var(--ach-transition);
            opacity: 0;
            visibility: hidden;
            z-index: 9998;
        }
        
        .ach-back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }
        
        .ach-back-to-top:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(52, 152, 219, 0.4);
        }
        
        /* Responsive Design */
        @media (max-width: 1200px) {
            .ach-calculator-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }
        }
        
        @media (max-width: 992px) {
            .ach-header-content {
                flex-direction: column;
                text-align: center;
                gap: 1rem;
            }
            
            .ach-search-container {
                max-width: 100%;
            }
            
            .ach-hero-title {
                font-size: 2rem;
            }
            
            .ach-hero-description {
                font-size: 1.1rem;
            }
        }
        
        @media (max-width: 768px) {
            .ach-main-content {
                padding: 1.5rem;
            }
            
            .ach-hero {
                padding: 2rem 1rem;
            }
            
            .ach-hero-title {
                font-size: 1.8rem;
            }
            
            .ach-hero-description {
                font-size: 1rem;
            }
            
            .ach-hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .ach-btn {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
            
            .ach-calculator-grid {
                grid-template-columns: 1fr;
            }
            
            .ach-back-to-top {
                bottom: 5.5rem;
                right: 1rem;
            }
            
            .ach-search-results {
                margin: 0.5rem 1rem;
                left: 0;
                right: 0;
            }
            
            .ach-category-nav {
                flex-direction: column;
                align-items: center;
            }
            
            .ach-category-btn {
                width: 100%;
                max-width: 250px;
                justify-content: center;
            }
        }
        
        @media (max-width: 576px) {
            .ach-header {
                padding: 1rem;
            }
            
            .ach-main-content {
                padding: 1rem;
            }
            
            .ach-section-title {
                font-size: 1.5rem;
            }
        }
        
        /* Performance optimizations */
        .ach-calculator-card {
            will-change: transform;
        }
        
        /* Focus styles for accessibility */
        .ach-btn:focus, .ach-search-input:focus {
            outline: 2px solid var(--ach-accent-color);
            outline-offset: 2px;
        }
        
        /* WordPress-specific fixes */
        .ach-header {
            top: 0;
        }
        
        .admin-bar .ach-header {
            top: 32px;
        }
        
        @media screen and (max-width: 782px) {
            .admin-bar .ach-header {
                top: 46px;
            }
        }