/* Base Styles */
        :root {
            --epulse-primary-color: #007bff; /* Bright Blue */
            --epulse-secondary-color: #6c757d; /* Muted Grey */
            --epulse-success-color: #28a745; /* Green */
            --epulse-danger-color: #dc3545;  /* Red */
            --epulse-warning-color: #ffc107; /* Yellow */
            --epulse-info-color: #17a2b8;    /* Teal */
            --epulse-light-color: #f8f9fa;   /* Light Grey */
            --epulse-dark-color: #343a40;    /* Dark Grey */
            --epulse-text-color: #212529;    /* Primary Text */
            --epulse-text-muted: #6c757d;    /* Muted Text */
            --epulse-bg-color: #ffffff;      /* White Background */
            --epulse-card-bg: #ffffff;
            --epulse-border-radius: 20px;
            --epulse-shadow: 0 4px 15px rgba(0, 0, 0, 0.07);
            --epulse-font-family: 'Poppins', sans-serif; /* Example Font */
        }

        html {
            font-size: 60%; /* Base 10px for scalable typography */
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--epulse-font-family);
            font-size: 1.6rem; /* Default to 16px */
            line-height: 1.6;
            background-color: var(--epulse-light-color);
            color: var(--epulse-text-color);
            margin: 0;
            padding: 0;
        }

        /* Typography */
        .epulse-page-title { /* h1 */
            font-size: 3.2rem; /* 32px */
            font-weight: 700;
            color: var(--epulse-dark-color);
            margin-bottom: 2rem;
            text-align: center;
            padding-top: 3rem;
        }

        .epulse-section-subtitle { /* h2 (if needed) or for card titles */
            font-size: 2.4rem; /* 24px */
            font-weight: 600;
            color: var(--epulse-primary-color);
            margin-bottom: 1rem;
        }

        .epulse-card-content-title { /* h3 */
            font-size: 1.8rem; /* 18px */
            font-weight: 600;
            color: var(--epulse-text-color);
            margin-top: 0;
            margin-bottom: 0.8rem;
        }

        p {
            margin-bottom: 1rem;
            font-size: 1.5rem; /* 15px */
        }

        /* Layout & Container */
        .epulse-main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem 1.5rem;
        }

        /* Order List Section */
        .epulse-order-history {
            padding-bottom: 4rem;
        }

        .epulse-order-list {
            display: grid;
            grid-template-columns: 1fr; /* Mobile-first: 1 column */
            gap: 2.5rem;
        }

        /* Order Card */
        .epulse-order-card {
            background-color: var(--epulse-card-bg);
            border-radius: var(--epulse-border-radius);
            box-shadow: var(--epulse-shadow);
            padding: 2.5rem;
            opacity: 0; /* For scroll animation */
            transform: translateY(20px); /* For scroll animation */
            transition: opacity 0.5s ease-out, transform 0.5s ease-out;
        }

        .epulse-order-card--visible {
            opacity: 1;
            transform: translateY(0);
        }

        .epulse-order-card__header {
            border-bottom: 1px solid #eee;
            padding-bottom: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .epulse-order-card__id {
            font-size: 1.4rem;
            color: var(--epulse-text-muted);
            display: block;
            margin-bottom: 0.5rem;
        }
         .epulse-order-card__id strong {
            color: var(--epulse-primary-color);
         }


        .epulse-order-card__detail-item {
            margin-bottom: 0.8rem;
            font-size: 1.5rem;
            color: var(--epulse-text-color);
        }

        .epulse-order-card__detail-item strong {
            font-weight: 600;
            color: var(--epulse-dark-color);
            margin-right: 0.5rem;
        }
        .epulse-order-card__detail-item .epulse-status-value {
            font-weight: 700;
            padding: 0.3rem 0.8rem;
            border-radius: 10px;
            font-size:1.4rem;
        }
        .epulse-status-value--pending {
            background-color: var(--epulse-warning-color);
            color: #333;
        }
        .epulse-status-value--paid {
            background-color: var(--epulse-success-color);
            color: white;
        }
        .epulse-status-value--checking {
            background-color: var(--epulse-info-color);
            color: white;
        }
         .epulse-status-value--error {
            background-color: var(--epulse-danger-color);
            color: white;
        }


        .epulse-order-card__items-section {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #eee;
        }

        .epulse-order-card__item {
            display: flex;
            justify-content: space-between;
            padding: 0.8rem 0;
            font-size: 1.4rem;
            border-bottom: 1px dashed #f0f0f0;
        }
         .epulse-order-card__item:last-child {
            border-bottom: none;
        }

        .epulse-order-card__item-name {
            color: var(--epulse-text-color);
        }
        .epulse-order-card__item-details {
            color: var(--epulse-text-muted);
        }

        .epulse-order-card__actions {
            margin-top: 2.5rem;
            display: flex;
            flex-direction: column; /* Stack buttons on mobile */
            gap: 1rem;
        }

        /* Buttons */
        .epulse-button {
            display: inline-block;
            padding: 1.2rem 2.5rem;
            font-size: 1.5rem;
            font-weight: 600;
            text-align: center;
            text-decoration: none;
            color: #fff;
            border: none;
            border-radius: 50px; /* Pill-shaped */
            cursor: pointer;
            transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        .epulse-button:hover {
            opacity:0.9;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15) !important;
            transform: translateY(-2px);
            background-color: darkgreen !important;
        }
        .epulse-button:active{
            transform: translateY(0px);
        }

        .epulse-button--primary {
            background-color: var(--epulse-primary-color);
        }
        .epulse-button--primary:hover {
            background-color: darken(var(--epulse-primary-color), 10%);
        }

        .epulse-button--success {
            background-color: var(--epulse-success-color);
        }
         .epulse-button--success:hover {
            background-color: darken(var(--epulse-success-color), 10%);
        }

        .epulse-button--secondary {
            background-color: var(--epulse-secondary-color);
        }
        .epulse-button--secondary:hover {
            background-color: darken(var(--epulse-secondary-color), 10%);
        }
        
        .epulse-button--danger {
            background-color: var(--epulse-danger-color);
        }
        .epulse-button--danger:hover {
            background-color: darken(var(--epulse-danger-color), 10%);
        }
        .epulse-button--full-width {
            width: 100%;
            display: block;
        }


        /* Empty State */
        .epulse-empty-state {
            text-align: center;
            padding: 4rem 2rem;
            background-color: var(--epulse-card-bg);
            border-radius: var(--epulse-border-radius);
            box-shadow: var(--epulse-shadow);
        }
        .epulse-empty-state__icon {
            font-size: 5rem; /* Replace with an actual icon if you have an icon font/SVG */
            color: var(--epulse-primary-color);
            margin-bottom: 1rem;
        }
        .epulse-empty-state__message {
            font-size: 1.8rem;
            color: var(--epulse-text-muted);
            margin-bottom: 1.5rem;
        }
        .epulse-empty-state__action .epulse-button {
            font-size: 1.6rem;
        }


        /* Responsive Adjustments */
        @media (min-width: 768px) { /* Tablets and up */
            .epulse-order-list {
                grid-template-columns: repeat(auto-fill, minmax(450px, 1fr)); /* 2 columns if space allows */
            }
            .epulse-order-card__actions {
                flex-direction: row; /* Buttons side-by-side */
                align-items: center;
                 flex-wrap: wrap; /* Allow buttons to wrap if too many */
            }
            .epulse-button--full-width { /* No longer full width on larger screens for actions */
               width: auto;
            }
             .epulse-page-title {
                font-size: 3.6rem;
                padding-top: 4rem;
            }
        }

        @media (min-width: 992px) { /* Desktops */
             .epulse-order-list {
                /* If you want strictly 2 columns on larger screens and items are wide enough: */
                /* grid-template-columns: 1fr 1fr; */
            }
            .epulse-page-title {
                font-size: 4rem;
            }
        }