/* ... نفس كود CSS من المثال السابق مع إضافات ... */
        @import url('https://fonts.googleapis.com/css2?family=Amiri+Quran&family=Noto+Kufi+Arabic:wght@400;700&family=Noto+Naskh+Arabic:wght@400;700&display=swap');

        :root {
            --bg-color: #10101a;
            --primary-text-color: #e0e0e0;
            --accent-color: #00aaff;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.1);
            --hover-glow-color: rgba(0, 170, 255, 0.5);
            --quran-font: 'Amiri Quran', 'Noto Naskh Arabic', serif;
            --ui-font: 'Noto Kufi Arabic', 'Noto Naskh Arabic', sans-serif;
            --verse-font-size: 1.8em; /* Default verse font size */
            --verse-line-height: 2.5;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth; /* For smooth scroll to top */
        }

        body {
            font-family: var(--ui-font);
            background-color: var(--bg-color);
            color: var(--primary-text-color);
            overflow-x: hidden;
            line-height: 1.8;
            position: relative;
        }

        #star-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            overflow: hidden;
        }

        .star {
            position: absolute;
            background-color: white;
            border-radius: 50%;
            animation: twinkle 5s infinite ease-in-out;
        }

        @keyframes twinkle {
            0%, 100% { opacity: 0.3; transform: scale(0.8); }
            50% { opacity: 1; transform: scale(1.2); }
        }

        .header {
            display: flex;
            align-items: center;
            padding: 15px 20px;
            background: rgba(16, 16, 26, 0.5);
            backdrop-filter: blur(5px);
            border-bottom: 1px solid var(--glass-border);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .logo {
            font-family: 'Noto Kufi Arabic', var(--ui-font);
            font-size: 2.2em;
            font-weight: bold;
            color: var(--primary-text-color);
            text-shadow: 0 0 10px var(--accent-color), 0 0 20px var(--accent-color);
            animation: shimmer 5s infinite linear;
        }
        
        .logo::before {
            content: "📖"; 
            margin-left: 8px;
            font-size: 0.8em; 
            vertical-align: middle;
        }

        @keyframes shimmer {
            0% { text-shadow: 0 0 5px var(--accent-color), 0 0 10px var(--accent-color); }
            50% { text-shadow: 0 0 15px var(--hover-glow-color), 0 0 25px var(--hover-glow-color); }
            100% { text-shadow: 0 0 5px var(--accent-color), 0 0 10px var(--accent-color); }
        }

        .menu-toggle {
            font-size: 2em;
            background: none;
            border: none;
            color: var(--primary-text-color);
            cursor: pointer;
            display: none; 
        }

        .sidebar {
            position: fixed;
            top: 0;
            right: -300px; 
            width: 280px;
            height: 100vh;
            background: var(--glass-bg);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-left: 1px solid var(--glass-border);
            padding-top: 80px;
            transition: right 0.3s ease-in-out;
            z-index: 999;
            box-shadow: 5px 0 15px rgba(0,0,0,0.2);
            overflow-y: auto; /* Allow sidebar to scroll if content overflows */
        }

        .sidebar.open {
            right: 0;
        }
        
        .sidebar::before { 
            content: '';
            position: absolute;
            top: 20px;
            left: 20px; 
            width: 80px; height: 80px;
            border: 1px solid var(--accent-color);
            border-radius: 50%;
            opacity: 0.3;
            animation: spin-glow 10s linear infinite;
            z-index: -1;
        }

        @keyframes spin-glow {
            0% { transform: rotate(0deg); box-shadow: 0 0 5px var(--accent-color); }
            50% { box-shadow: 0 0 15px var(--hover-glow-color); }
            100% { transform: rotate(360deg); box-shadow: 0 0 5px var(--accent-color); }
        }

        .sidebar nav ul {
            list-style: none;
        }

        .sidebar nav ul li a {
            display: block;
            padding: 15px 25px;
            color: var(--primary-text-color);
            text-decoration: none;
            font-size: 1.1em;
            transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
            border-bottom: 1px solid var(--glass-border);
        }

        .sidebar nav ul li a:hover,
        .sidebar nav ul li a.active {
            background-color: var(--hover-glow-color);
            color: #fff;
            transform: translateX(5px); 
            box-shadow: 0 0 15px var(--hover-glow-color) inset;
        }
        
        /* Search input in sidebar */
        .search-container {
            padding: 10px 20px;
            border-bottom: 1px solid var(--glass-border);
        }
        .search-container input[type="text"] {
            width: 100%;
            padding: 10px;
            background-color: rgba(255, 255, 255, 0.1);
            border: 1px solid var(--glass-border);
            border-radius: 5px;
            color: var(--primary-text-color);
            font-family: var(--ui-font);
        }
        .search-container input[type="text"]::placeholder {
            color: rgba(224, 224, 224, 0.7);
        }


        .main-content {
            padding: 20px;
            margin-left: 0; 
            margin-right: 0; 
            transition: margin-left 0.3s ease-in-out, margin-right 0.3s ease-in-out, opacity 0.3s ease;
            opacity: 1; /* For transition effect */
        }
        .main-content.hidden-for-transition {
            opacity: 0;
        }


        .page-title {
            font-size: 2em;
            color: var(--accent-color);
            text-align: center;
            margin-bottom: 30px;
            text-shadow: 0 0 8px var(--accent-color);
        }
        
        #surah-list-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }

        .surah-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            padding: 20px;
            border-radius: 8px;
            text-align: center;
            cursor: pointer;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            font-family: var(--ui-font);
        }
        .surah-card.hidden { display: none; } /* For search filtering */

        .surah-card:hover {
            transform: translateY(-5px) scale(1.02);
            box-shadow: 0 10px 20px rgba(0, 170, 255, 0.2), 0 0 15px var(--hover-glow-color);
        }

        .surah-card h3 {
            font-size: 1.5em;
            color: var(--accent-color);
            margin-bottom: 8px;
        }

        .surah-card p {
            font-size: 0.9em;
            color: var(--primary-text-color);
        }
        
        #surah-display-section {
            display: none; 
            background: rgba(0,0,0,0.2);
            padding: 25px;
            border-radius: 10px;
            border: 1px solid var(--glass-border);
            margin-top: 20px;
            /* animation: fadeIn 0.5s ease-in-out; */ /* Animation when section appears */
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }


        #surah-title-display {
            font-family: var(--quran-font); 
            font-size: 2.8em;
            text-align: center;
            color: var(--accent-color);
            margin-bottom: 20px;
            font-weight: bold;
        }
        
        #bismillah-display {
            font-family: var(--quran-font);
            font-size: 2em;
            text-align: center;
            color: var(--primary-text-color);
            margin-bottom: 30px;
            padding: 10px;
            border-bottom: 1px solid var(--glass-border);
            border-top: 1px solid var(--glass-border);
            text-shadow: 0 0 5px var(--accent-color);
        }
        #bismillah-display:empty {
            display: none;
        }

        .verse-controls {
            display: flex;
            justify-content: center;
            align-items: center;
            margin-bottom: 20px;
            gap: 10px;
        }
        .verse-controls button {
            background-color: var(--accent-color);
            color: var(--bg-color);
            border: none;
            padding: 8px 12px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1em;
        }
        .verse-controls button:hover {
             background-color: var(--hover-glow-color);
             color: #fff;
        }
        .verse-controls span {
            font-size: 0.9em;
            color: var(--primary-text-color);
        }

        #verse-container .verse { /* Apply variable to verse */
            font-family: var(--quran-font);
            font-size: var(--verse-font-size);
            line-height: var(--verse-line-height);
            margin-bottom: 20px;
            padding: 10px 0;
            border-bottom: 1px dotted var(--glass-border);
        }

        #verse-container .verse:last-child {
            border-bottom: none;
        }

        .verse-number {
            display: inline-block;
            width: 30px; /* Will adjust with font size slightly */
            height: 30px;
            line-height: 30px;
            text-align: center;
            border: 1px solid var(--accent-color);
            border-radius: 50%;
            margin-right: 10px; 
            margin-left: 0; 
            font-size: 0.5em; /* Relative to verse font size for scaling */
            color: var(--accent-color);
            vertical-align: middle;
            font-family: var(--ui-font); 
        }

        .verse-text {
            display: inline;
        }
        
        #back-to-surah-list {
            display: block;
            margin: 30px auto 10px;
            padding: 10px 20px;
            background-color: var(--accent-color);
            color: var(--bg-color);
            border: none;
            border-radius: 5px;
            font-family: var(--ui-font);
            font-size: 1em;
            cursor: pointer;
            transition: background-color 0.2s ease, box-shadow 0.2s ease;
        }
        #back-to-surah-list:hover {
            background-color: var(--hover-glow-color);
            color: #fff;
            box-shadow: 0 0 15px var(--hover-glow-color);
        }
        
        #scroll-to-top-btn {
            position: fixed;
            bottom: 20px;
            left: 20px; /* For RTL, this would be on the left */
            background-color: var(--accent-color);
            color: var(--bg-color);
            border: none;
            border-radius: 50%;
            width: 50px;
            height: 50px;
            font-size: 1.5em;
            text-align: center;
            line-height: 50px;
            cursor: pointer;
            display: none; /* Hidden by default */
            z-index: 990;
            box-shadow: 0 2px 10px rgba(0,0,0,0.3);
            transition: opacity 0.3s, transform 0.3s;
        }
        #scroll-to-top-btn:hover {
             background-color: var(--hover-glow-color);
             color: #fff;
             transform: scale(1.1);
        }


        /* Responsive Design */
        @media (max-width: 768px) {
            .menu-toggle { display: block; }
            .sidebar {
                 right: -100%; 
                 width: 80%;
                 max-width: 300px;
                 border-left: 1px solid var(--glass-border);
                 border-right: none;
            }
             .sidebar.open { right: 0; }
            .main-content { margin-right: 0; margin-left: 0; }
            .header .logo { font-size: 1.8em; }

            :root { /* Smaller verse font for mobile */
                --verse-font-size: 1.5em;
                --verse-line-height: 2.2;
            }
            #surah-title-display { font-size: 2.2em; }
            #bismillah-display { font-size: 1.7em; }
            #scroll-to-top-btn { bottom: 15px; left: 15px; width: 40px; height: 40px; line-height: 40px; font-size: 1.2em;}
        }

        @media (min-width: 769px) {
            .sidebar {
                right: 0; 
                width: 280px;
                transform: translateX(0); 
                padding-top: 70px; 
                box-shadow: -2px 0 10px rgba(0,0,0,0.1); 
                border-left: 1px solid var(--glass-border); 
                border-right: none;
            }
            .menu-toggle { display: none; }
            .main-content {
                margin-left: 0; 
                margin-right: 280px; 
            }
             #surah-list-container { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
        }
        
        @media (min-width: 769px) and (max-width: 992px) {
            #surah-list-container { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
        }