/* --- 1. Global Setup & Variables --- */
        
         :root {
            --brand-font: "Heritho", sans-serif;
            --default-font: "Exo 2", sans-serif;
            --heading-font: "Orbitron", sans-serif;
            --background-color: #030414;
            --default-color: #c4c4c4;
            --heading-color: #ffffff;
            --accent-color: #00aaff;
            --accent-color-glow: rgba(0, 170, 255, 0.5);
            --secondary-accent: #f72585;
            --surface-color: rgba(10, 10, 30, 0.5);
            --contrast-color: #ffffff;
            --nav-color: #ffffff;
            --nav-hover-bg: linear-gradient(90deg, var(--accent-color), var(--secondary-accent));
            --nav-mobile-background-color: #05061a;
            --border-color: rgba(196, 196, 196, 0.2);
            /* New: Based on default-color */
            scroll-behavior: smooth;
        }
        
        [data-theme="light"] {
            --background-color: #f4f7f9;
            --default-color: #444444;
            --heading-color: #0a2540;
            --surface-color: rgba(255, 255, 255, 0.6);
            --contrast-color: #0a2540;
            --nav-color: #0a2540;
            --nav-mobile-background-color: #ffffff;
            --border-color: rgba(10, 37, 64, 0.15);
            /* New: Based on heading-color */
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: var(--default-font);
            background-color: var(--background-color);
            color: var(--default-color);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        /* --- 3. Page Title --- */
        
        .page-title {
            text-align: center;
            margin-top: 60px;
            margin-bottom: 40px;
        }
        
        .page-title h1 {
            font-size: clamp(2.5rem, 5vw, 3.5rem);
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--heading-color);
        }
        
        .page-title p {
            font-size: 1.1rem;
            color: var(--default-color);
            max-width: 600px;
            margin: 0 auto;
        }
        /* --- 4. Tab Navigation --- */
        
        .tab-navigation {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 60px;
        }
        
        .tab-btn {
            background: none;
            border: 1px solid var(--border-color);
            color: var(--default-color);
            opacity: 0.8;
            padding: 10px 20px;
            border-radius: 30px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .tab-btn:hover {
            background-color: var(--accent-color);
            color: #fff;
            border-color: var(--accent-color);
            opacity: 1;
        }
        
        .tab-btn.active {
            background-color: var(--secondary-accent);
            color: var(--contrast-color);
            border-color: var(--secondary-accent);
            opacity: 1;
        }
        /* --- 5. Tab Content & Package Grid --- */
        
        .tab-panel {
            display: none;
        }
        
        .tab-panel.active {
            display: block;
        }
        
        .package-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 320px));
            gap: 30px;
            justify-content: center;
            align-items: start;
        }
        /* --- 6. Package Card Styling --- */
        
        .popular-wrapper {
            position: relative;
            padding-top: 25px;
        }
        
        .popular-banner {
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--secondary-accent);
            color: #fff;
            padding: 8px 25px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 700;
            z-index: 3;
            white-space: nowrap;
        }
        
        .package-card {
            background: var(--surface-color);
            border: 1px solid var(--border-color);
            border-radius: 15px;
            padding: 30px;
            display: flex;
            flex-direction: column;
            transition: all 0.3s ease;
            position: relative;
            width: 100%;
            height: 100%;
        }
        
        .package-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }
        
        .popular-wrapper .package-card {
            border: 2px solid var(--secondary-accent);
        }
        
        .card-header {
            padding-top: 0;
        }
        
        .card-header h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--heading-color);
            margin-bottom: 10px;
        }
        
        .card-header .price {
            margin-bottom: 15px;
        }
        
        .card-header .price .old-price {
            font-size: 1.2rem;
            color: var(--default-color);
            opacity: 0.7;
            text-decoration: line-through;
            margin-right: 10px;
        }
        
        .card-header .price .new-price {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-color);
        }
        
        .card-header .price .price-simple {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-color);
        }
        
        .card-header .ideal-for {
            font-size: 1rem;
            color: var(--default-color);
            font-style: italic;
            margin-bottom: 25px;
            border-bottom: 1px dashed var(--border-color);
            padding-bottom: 20px;
        }
        
        .card-body {
            flex-grow: 1;
        }
        /* Section Title in Card */
        
        .card-section-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--heading-color);
            margin-top: 20px;
            margin-bottom: 15px;
            padding-bottom: 5px;
            border-bottom: 1px solid var(--border-color);
        }
        
        .card-body ul {
            list-style: none;
            padding: 0;
            margin-bottom: 15px;
        }
        
        .card-body ul li {
            position: relative;
            padding-left: 30px;
            margin-bottom: 12px;
            font-size: 0.95rem;
            color: var(--default-color);
        }
        /* Default features list (Tick) */
        
        .features-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0;
            color: var(--accent-color);
            font-weight: 700;
        }
        
        .card-footer {
            margin-top: auto;
            /* Pushes footer to bottom */
            padding-top: 15px;
            /* Space before button */
        }
        
        .cta-button {
            display: block;
            width: 100%;
            background: var(--accent-color);
            color: #fff;
            text-align: center;
            padding: 12px;
            border: none;
            border-radius: 8px;
            text-decoration: none;
            font-size: 1rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .cta-button:hover {
            background-color: var(--accent-color);
            filter: brightness(1.15);
            transform: scale(1.02);
        }
        /* --- 7. Main Add-ons Section --- */
        
        .addons-section {
            text-align: center;
            margin-top: 80px;
            padding: 40px 20px;
            background: var(--surface-color);
            border-radius: 15px;
            margin-bottom: 40px;
            /* Space for the new button */
        }
        
        .addons-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--heading-color);
        }
        /* --- 8. Responsive Adjustments --- */
        
        @media (max-width: 768px) {
            .tab-navigation {
                gap: 5px;
            }
            .tab-btn {
                font-size: 0.9rem;
                padding: 8px 15px;
            }
            .package-grid {
                grid-template-columns: 3fr;
            }
        }
        
        @media (max-width: 380px) {
            .package-grid {
                grid-template-columns: 1fr;
            }
        }
        /* --- 9. NEW Add-On Checkbox Styling --- */
        
        .addon-item {
            display: flex;
            align-items: center;
            margin-bottom: 12px;
            position: relative;
        }
        
        .addon-item label {
            font-size: 0.95rem;
            color: var(--default-color);
            padding-left: 35px;
            /* Space for custom checkbox */
            cursor: pointer;
            line-height: 1.4;
        }
        
        .addon-item label .addon-price {
            color: var(--secondary-accent);
            font-weight: 600;
            margin-left: 5px;
        }
        
        .addon-item input[type="checkbox"] {
            opacity: 0;
            /* Hide default box */
            position: absolute;
            width: 0;
            height: 0;
        }
        /* Custom checkbox box */
        
        .addon-item label::before {
            content: '';
            position: absolute;
            left: 0;
            top: 2px;
            width: 20px;
            height: 20px;
            border: 2px solid var(--border-color);
            border-radius: 4px;
            background: var(--surface-color);
            transition: all 0.2s ease;
        }
        /* Custom checkmark (tick) */
        
        .addon-item label::after {
            content: '✓';
            position: absolute;
            left: 5px;
            top: 2px;
            font-size: 1.2rem;
            font-weight: 900;
            color: var(--accent-color);
            opacity: 0;
            transform: scale(0.5);
            transition: all 0.2s ease;
        }
        /* Show tick when checked */
        
        .addon-item input[type="checkbox"]:checked+label::before {
            border-color: var(--accent-color);
        }
        
        .addon-item input[type="checkbox"]:checked+label::after {
            opacity: 1;
            transform: scale(1);
        }
        /* Grid for main add-ons section */
        
        .addon-selection-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 10px 20px;
            text-align: left;
        }
        /* --- 10. NEW Green WhatsApp Button Styling --- */
        
        #whatsapp-button {
            background: #25D366;
            max-width: 400px;
            margin: 0 auto 60px auto;
            /* Center it and add space at the bottom */
        }
        
        #whatsapp-button:hover {
            background: #25D366;
            /* Keep green on hover */
            filter: brightness(1.1);
        }