    /* <style> */
        /* Light and Dark Theme Variable Tokens */
        :root {
            --bg-body: #f3f4f6;
            --bg-layout: #ffffff;
            --text-main: #1f2937;
            --text-muted: #9ca3af;
            --text-meta: #6b7280;
            --border: #e5e7eb;
            --border-hover: #3b82f6;
            --shadow-hover: rgba(59, 130, 246, 0.08);
            --toggle-bg: #e5e7eb;
            --toggle-text: #374151;
            --toggle-active-bg: #ffffff;
            --card-sub: #f9fafb;
            --accent-alert: #b45309;
            --accent-alert-bg: #fffbeb;
        }

        [data-theme="dark"] {
            --bg-body: #0f172a;
            --bg-layout: #1e293b;
            --text-main: #f8fafc;
            --text-muted: #64748b;
            --text-meta: #94a3b8;
            --border: #334155;
            --border-hover: #38bdf8;
            --shadow-hover: rgba(56, 189, 248, 0.15);
            --toggle-bg: #334155;
            --toggle-text: #94a3b8;
            --toggle-active-bg: #38bdf8;
            --toggle-active-text: #0f172a;
            --card-sub: #111827;
            --accent-alert: #f59e0b;
            --accent-alert-bg: #78350f;
        }

        body {
            font-family: system-ui, -apple-system, sans-serif;
            margin: 0;
            background: var(--bg-body);
            color: var(--text-main);
            display: flex;
            min-height: 100vh;
            transition: background 0.3s ease, color 0.3s ease;
            position: relative;
        }

        /* Top Right Theme Switcher Container */
        .theme-switcher {
            position: absolute;
            top: 24px;
            right: 24px;
            display: flex;
            background: var(--toggle-bg);
            padding: 4px;
            border-radius: 30px;
            z-index: 10;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        }

        .theme-switcher label {
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            border-radius: 20px;
            transition: all 0.2s ease;
            color: var(--toggle-text);
            user-select: none;
        }

        .theme-switcher input[type="radio"] {
            display: none;
        }

        #light-mode:checked ~ label[for="light-mode"] {
            background: #ffffff;
            color: #1f2937;
        }

        [data-theme="dark"] #dark-mode:checked ~ label[for="dark-mode"] {
            background: var(--toggle-active-bg);
            color: var(--toggle-active-text);
        }

        /* Responsive Layout Grid Setup */
        .split-layout {
            display: flex;
            width: 100%;
            max-width: 1100px;
            margin: 40px auto;
            background: var(--bg-layout);
            box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
            border-radius: 16px;
            overflow: hidden;
            min-height: 600px;
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        /* Left Branding Panel configuration locked with background.jpg placement */
        .brand-side {
            position: relative;
           /* background-image: url('https://af14ns.gr/background.jpg'); */
            background: linear-gradient(135deg, rgba(58, 94, 192, 0.25), rgba(59, 130, 246, 0.25)), 
                        url('https://af14ns.gr/background.jpg') center/cover no-repeat;
            background-position: center;
            background-size: cover;
            background-repeat: no-repeat;
            width: 50%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            box-sizing: border-box;
        }

        .brand-side::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(30, 58, 138, 0.25), rgba(15, 23, 42, 0.45));
            z-index: 1;
        }

        .brand-content {
            position: relative;
            z-index: 2;
            padding: 60px;
        }

        .brand-side h1 { 
            font-size: 36px; 
            margin: 0 0 10px 0; 
            color: #ffffff;
            text-shadow: 0 2px 8px rgba(0,0,0,0.8), 0 1px 3px rgba(0,0,0,0.9);
        }
        
        .brand-side p { 
            color: #ffffff; 
            margin: 0; 
            font-size: 18px; 
            font-weight: 500;
            text-shadow: 0 2px 6px rgba(0,0,0,0.8);
        }

        /* Right Content Panel for Navigation & Table Conversion */
        .content-side {
            padding: 60px;
            width: 60%;
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            box-sizing: border-box;
        }

        .section-block {
            margin-bottom: 24px;
        }

        .section-block h2 {
            font-size: 13px;
            text-transform: uppercase;
            color: var(--text-muted);
            letter-spacing: 1px;
            margin-bottom: 16px;
            margin-top: 0;
        }

        /* Converted Data List Table Rows */
        .receipt-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .receipt-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 18px;
            border: 1px solid var(--border);
            border-radius: 10px;
            text-decoration: none;
            color: var(--text-main);
            transition: all 0.2s ease;
            background: transparent;
        }

        /* Apply hover rules only to actual actionable link entries */
        a.receipt-row:hover {
            border-color: var(--border-hover);
            box-shadow: 0 4px 12px var(--shadow-hover);
            transform: translateY(-1px);
        }

        /* Static container style for non-link rows */
        div.receipt-row {
            cursor: default;
        }

        .receipt-title {
            font-weight: 500;
            font-size: 15px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .receipt-alert {
            font-size: 12px;
            font-style: italic;
            color: var(--accent-alert);
            background: var(--accent-alert-bg);
            padding: 2px 8px;
            border-radius: 4px;
            width: fit-content;
        }

        .numeric {
            font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
            font-weight: 600;
            font-size: 15px;
            white-space: nowrap;
        }

        .receipt-meta-arrow {
            color: var(--text-meta);
            margin-left: 10px;
            font-size: 14px;
        }

        /* Embedded Custom Nav Footers */
        .footer-nav {
            margin-top: auto;
            padding-top: 30px;
            border-top: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .footer-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-main);
            text-decoration: none;
            font-size: 14px;
            font-weight: 600;
            padding: 8px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .footer-link:hover {
            border-color: var(--border-hover);
            background: var(--card-sub);
        }

        .home-icon-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--card-sub);
            transition: all 0.2s ease;
        }

        .home-icon-btn:hover {
            border-color: var(--border-hover);
            transform: scale(1.03);
        }

        .home-icon-btn img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 6px;
        }

        /* Responsive Mobile Layout Adjustments */
        @media (max-width: 768px) {
            .split-layout {
                flex-direction: column;
                margin: 80px 16px 20px 16px;
                width: calc(100% - 32px);
            }
            .brand-side, .content-side {
                width: 100%;
            }
            .brand-content {
                padding: 40px 30px;
            }
            .content-side {
                padding: 40px 30px;
            }
            .theme-switcher {
                top: 16px;
                right: 16px;
            }
            .footer-nav {
                margin-top: 30px;
                flex-direction: column;
                gap: 16px;
                align-items: flex-start;
            }
            .footer-link {
                width: 100%;
                box-sizing: border-box;
                justify-content: center;
            }
        }
    /* </style> */
