/* styles.css */
        :root {
            --bg-color: #f8f9fa;
            --text-color: #333;
            --card-bg: #ffffff;
            --header-gradient-1: #DC2626;
            --header-gradient-2: #B91C1C;
            --shadow: rgba(0,0,0,0.1);
            --shadow-hover: rgba(0,0,0,0.15);
            --border-color: #e0e0e0;
            --input-bg: #f8f9fa;
        }

        body.dark-mode {
            --bg-color: #1a1a1a;
            --text-color: #e0e0e0;
            --card-bg: #2d2d2d;
            --header-gradient-1: #DC2626;
            --header-gradient-2: #B91C1C;
            --shadow: rgba(0,0,0,0.3);
            --shadow-hover: rgba(0,0,0,0.5);
            --border-color: #444;
            --input-bg: #333;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--bg-color);
            padding-top: 60px;
            transition: background-color 0.3s ease, color 0.3s ease;
        }

        body[dir="rtl"] {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        header {
            background: linear-gradient(135deg, var(--header-gradient-1), var(--header-gradient-2));
            color: white;
            padding: 1rem 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px var(--shadow);
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: bold;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .tagline {
            display: none;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }

        .theme-toggle {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 0.5rem 0.75rem;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1.2rem;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            margin-left: 0.5rem;
        }

        .theme-toggle:hover {
            background: rgba(255, 255, 255, 0.3);
        }

        .language-selector {
            position: relative;
            margin-left: 1rem;
        }

        .language-btn {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 0.5rem 1rem;
            border-radius: 5px;
            cursor: pointer;
            font-size: 0.9rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.3s;
        }

        .language-btn:hover {
            background: rgba(255, 255, 255, 0.3);
        }

        .language-dropdown {
            position: absolute;
            top: 100%;
            right: 0;
            margin-top: 0.5rem;
            background: var(--card-bg);
            border-radius: 5px;
            box-shadow: 0 4px 10px var(--shadow-hover);
            overflow: hidden;
            display: none;
            min-width: 150px;
            z-index: 1001;
        }

        .language-dropdown.active {
            display: block;
        }

        .language-option {
            padding: 0.75rem 1rem;
            cursor: pointer;
            transition: background 0.3s;
            color: var(--text-color);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .language-option:hover {
            background: var(--input-bg);
        }

        .language-option.active {
            background: #DC2626;
            color: white;
        }

        nav {
            display: flex;
            align-items: center;
        }

        .nav-links {
            display: flex;
            gap: 1.5rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            text-decoration: none;
            color: white !important;
            font-weight: 500;
            padding: 0.5rem 0;
            transition: all 0.3s;
            border-bottom: 2px solid transparent;
            font-size: 0.9rem;
        }

        .nav-links a:hover {
            border-bottom-color: white;
            opacity: 0.9;
            color: white !important;
        }

        main {
            padding: 2rem 0;
            min-height: calc(100vh - 200px);
        }

        section {
            background: var(--card-bg);
            margin: 0 0 2rem 0;
            padding: 3rem 2rem;
            border-radius: 12px;
            box-shadow: 0 1px 3px var(--shadow);
            transition: background-color 0.3s ease;
        }

        section:first-child {
            margin-top: 0;
        }

        .hero-section {
            background: var(--card-bg);
            color: var(--text-color);
            text-align: center;
            padding: 4rem 2rem;
            margin: 2rem 0;
            border-radius: 20px;
            box-shadow: 0 4px 20px var(--shadow);
            transition: background-color 0.3s ease, color 0.3s ease;
        }

        .hero-logo {
            font-size: 5rem;
            margin-bottom: 1rem;
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }

        .hero-title {
            font-size: 3rem;
            font-weight: bold;
            margin-bottom: 1rem;
            color: #DC2626;
        }

        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            color: #666;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .download-buttons {
            display: flex;
            gap: 1.5rem;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            margin-top: 2.5rem;
        }

        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 1rem;
            background: #000;
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: 10px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s;
            box-shadow: 0 2px 10px rgba(0,0,0,0.15);
        }

        .download-btn-primary {
            background: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%);
            box-shadow: 0 4px 15px rgba(220, 38, 38, 0.3);
        }

        .download-btn-primary:hover {
            background: linear-gradient(135deg, #B91C1C 0%, #991B1B 100%);
            box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
        }

        .download-separator {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-color);
            opacity: 0.6;
            padding: 0 0.5rem;
        }

        .download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(0,0,0,0.25);
        }

        .download-btn svg {
            width: 32px;
            height: 32px;
            fill: white;
        }

        .download-btn .text {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }

        .download-btn .small {
            font-size: 0.8rem;
            font-weight: 400;
            opacity: 0.8;
        }

        .download-btn .large {
            font-size: 1.2rem;
            font-weight: 700;
        }

        h1, h2, h3 {
            color: #DC2626;
            margin-bottom: 1rem;
        }

        a {
            color: #DC2626;
            text-decoration: none;
            transition: color 0.3s;
        }

        a:hover {
            color: #B91C1C;
            text-decoration: underline;
        }

        body.dark-mode a {
            color: #EF4444;
        }

        body.dark-mode a:hover {
            color: #F87171;
        }

        h1 {
            font-size: 2.5rem;
            text-align: center;
        }

        h2 {
            font-size: 2rem;
            border-bottom: 3px solid #DC2626;
            padding-bottom: 0.5rem;
        }

        h3 {
            font-size: 1.5rem;
            margin-top: 1.5rem;
        }

        .contact-info {
            background: var(--input-bg);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1rem 0;
        }

        .contact-item {
            display: flex;
            align-items: center;
            margin: 0.8rem 0;
            font-size: 1.1rem;
            gap: 0.5rem;
        }

        .contact-item strong {
            min-width: 150px;
            color: #DC2626;
            flex-shrink: 0;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 2rem 0;
        }

        .feature-card {
            background: var(--input-bg);
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #DC2626;
            transition: background-color 0.3s ease;
        }

        .faq-item {
            margin: 1.5rem 0;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
        }

        .faq-question {
            background: var(--input-bg);
            padding: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }

        .faq-question:hover {
            background: #e9ecef;
        }

        .faq-answer {
            padding: 1rem;
            display: none;
        }

        .faq-answer.active {
            display: block;
        }

        .btn {
            display: inline-block;
            background: #DC2626;
            color: white;
            padding: 0.8rem 1.5rem;
            text-decoration: none;
            border-radius: 5px;
            transition: background 0.3s;
            margin: 0.5rem;
        }

        .btn:hover {
            background: #B91C1C;
        }

        footer {
            background: #333;
            color: white;
            text-align: center;
            padding: 2rem 0;
            margin-top: 3rem;
        }

        @media (max-width: 768px) {
            body {
                padding-top: 60px;
            }

            header {
                padding: 0.75rem 0;
            }

            .logo {
                font-size: 1.25rem;
            }

            .menu-toggle {
                display: block;
            }

            .language-selector {
                margin-left: 0.5rem;
                order: 2;
            }

            .language-btn {
                padding: 0.4rem 0.6rem;
                font-size: 0.85rem;
            }

            .menu-toggle {
                order: 3;
            }

            nav {
                position: fixed;
                top: 60px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 60px);
                background: linear-gradient(135deg, #DC2626, #B91C1C);
                transition: left 0.3s ease;
                padding: 2rem 0;
            }

            nav.active {
                left: 0;
            }

            .nav-links {
                flex-direction: column;
                align-items: center;
                gap: 0;
                width: 100%;
            }

            .nav-links a {
                padding: 1rem 2rem;
                width: 100%;
                text-align: center;
                border-bottom: 1px solid rgba(255,255,255,0.1);
                font-size: 1.1rem;
            }

            .nav-links a:hover {
                background: rgba(255,255,255,0.1);
                border-bottom-color: rgba(255,255,255,0.1);
            }

            main {
                padding: 1.5rem 0;
            }

            section {
                padding: 2rem 1.25rem;
                margin: 0 0 1.5rem 0;
                border-radius: 8px;
            }

            .container {
                padding: 0 1rem;
            }

            .feature-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }

            h1 {
                font-size: 1.75rem;
            }

            h2 {
                font-size: 1.5rem;
            }

            h3 {
                font-size: 1.25rem;
            }

            .contact-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.25rem;
            }

            .contact-item strong {
                margin-bottom: 0;
            }

            .hero-section {
                padding: 3rem 1.5rem;
                margin: 1.5rem 0;
                border-radius: 15px;
            }

            .hero-logo {
                font-size: 3.5rem;
            }

            .hero-title {
                font-size: 2rem;
            }

            .hero-subtitle {
                font-size: 1.1rem;
            }

            .download-buttons {
                flex-direction: column;
                gap: 1rem;
                align-items: stretch;
            }

            .download-separator {
                text-align: center;
                font-size: 1rem;
            }

            .download-btn {
                width: 100%;
                justify-content: center;
            }
        }