/* --- THEME-FOCUSED CSS --- */
        :root {
            --primary-color: #00A7B5; 
            --primary-dark-color: #008994;
            --dark-color: #034C55; 
            --secondary-color: #F0F9FA; /* A very light, clean teal background */
            --text-color: #4A5568; 
            --white-color: #FFFFFF;
            --border-color: #B2DFDB; 
        }

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

        body {
            font-family: 'Inter', sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: var(--white-color);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        h1, h2, h3, h4 {
            color: var(--dark-color);
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        
        h1 { font-size: 3.2rem; font-weight: 700; }
        h2 { font-size: 2.5rem; font-weight: 600; text-align: center; }
        h3 { font-size: 1.5rem; font-weight: 600; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; }
        a { color: var(--primary-color); text-decoration: none; }

        section {
            padding: 80px 0;
            overflow: hidden;
        }
        
        .button-primary {
            display: inline-block;
            background-color: #ffffff;
            border: 1px solid #034c55;
            color: #034c55;
            padding: 5px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            transition: transform 0.3s ease, background-color 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 167, 181, 0.2);
        }

        .button-primary:hover {
            border: 1px solid var(--border-color);
        }
        
        .section-intro {
            text-align: center;
            max-width: 750px;
            margin: 0 auto 4rem;
        }

        /* --- Header & Navigation --- */
        #main-header {
            background-color: var(--white-color);
            box-shadow: 0 2px 8px rgba(3, 76, 85, 0.05);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

        #logo {
            font-size: 2rem;
            font-weight: 700;
            color: var(--dark-color);
            letter-spacing: -1px;
        }
        .logo{
            width: 170px;
            height: auto;
        }
        #logo span { color: var(--primary-color); }
        
        #main-nav ul {
            list-style: none;
            display: flex;
            align-items: center;
        }
        #main-nav ul li { margin-left: 32px; }
        #main-nav ul li a {
            color: var(--text-color);
            font-weight: 500;
            padding-bottom: 5px;
            position: relative;
            transition: color 0.3s ease;
        }
        #main-nav ul li a.active, #main-nav ul li a:hover { 
            color: var(--primary-color); 
        }
        
        .menu-toggle { display: none; cursor: pointer; }
        .menu-toggle .bar {
            display: block; width: 25px; height: 3px;
            margin: 5px auto; background-color: var(--dark-color);
            transition: all 0.3s ease-in-out;
        }

        /* --- ENHANCED HERO SECTION --- */
        @keyframes float-anim {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-15px); }
        }

        #hero {
            padding: 60px 0;
            background-color: var(--secondary-color);
            background-image: radial-gradient(var(--border-color) 1px, transparent 1px);
            background-size: 40px 40px;
        }
        .hero-container {
            display: flex;
            align-items: center;
            gap: 5rem;
        }
        .hero-text {
            flex: 1;
        }
        .hero-mockup-area {
            flex: 1.2;
            position: relative;
        }
        .desktop-mockup {
            width: 100%;
            border-radius: 12px;
            padding: 0%;
        }
        .desktop-mockup img {
            width: 100%;
            margin: 0 auto;
            display: block;
            border-radius: 6px;
        }
        .floating-card {
            position: absolute;
            background: var(--white-color);
            padding: 0.2rem 0.8rem;
            border-radius: 10px;
            box-shadow: 0 10px 20px rgba(3, 76, 85, 0.15);
            display: flex;
            align-items: center;
            gap: 0.8rem;
            animation: float-anim 6s ease-in-out infinite;
        }
        .floating-card .icon {
            background: var(--secondary-color);
            width: 40px; height: 40px;
            border-radius: 50%;
            display: grid;
            place-items: center;
            color: var(--primary-color);
        }
        .floating-card-1 {
            top: 10%;
            left: -10%;
        }
        .floating-card-2 {
            bottom: 10%;
            right: -10%;
            animation-delay: 3s;
        }

        /* --- Other Sections --- */
        #why-avriobooks {
            text-align: center;
            padding: 60px 20px;
            background-color: var(--white-color);
        }
        
        #why-avriobooks h4 {
            font-size: 1.8rem;
            color: #222;
            margin-bottom: 10px;
        }
        
        #why-avriobooks .subtitle {
            font-size: 1rem;
            color: #666;
            margin-bottom: 40px;
        }
        
        .features {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 30px;
        }
        
        .feature-box {
            max-width: 300px;
            background: #fff;
            border-radius: 10px;
            padding: 20px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
            text-align: center;
            transition: transform 0.3s ease;
        }
        
        .feature-box:hover {
            transform: translateY(-5px);
        }
        
        .feature-box img {
            height: 50px;
            margin-bottom: 15px;
        }
        
        .feature-box h5 {
            font-size: 1.2rem;
            color: #034c55;
            margin-bottom: 10px;
        }
        
        .feature-box p {
            font-size: 0.95rem;
            color: #444;
        }


        #how-it-works { background-color: var(--secondary-color); }
        .steps-container { display: flex; justify-content: space-between; gap: 40px; }
        .step { flex: 1; text-align: center; padding: 20px; }
        .step-number {
            width: 60px; height: 60px; background: var(--white-color);
            border: 2px solid var(--primary-color); color: var(--primary-color);
            border-radius: 50%; display: inline-flex; justify-content: center;
            align-items: center; font-size: 1.8rem; font-weight: 700;
            margin-bottom: 1.5rem; box-shadow: 0 0 0 4px var(--white-color);
        }
        .step h3 { font-size: 1.4rem; }
        
        #use-cases { background-color: var(--secondary-color); }
        .use-case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .use-case-card {
            background: var(--white-color); border-radius: 12px; overflow: hidden;
            border: 1px solid #e2e8f0; transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .use-case-card:hover { 
            transform: translateY(-8px); 
            box-shadow: 0 10px 30px rgba(3, 76, 85, 0.1);
        }
        .use-case-card img { width: 100%; height: 220px; object-fit: cover; }
        .use-case-content { padding: 30px; }
        .use-case-content h3 { margin-top: 0; }

        #security { background-color: var(--white-color); }
        .security-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            max-width: 1100px;
            margin: 0 auto;
        }
        .security-item {
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
        }
        .security-icon {
            color: var(--primary-color);
            flex-shrink: 0;
            background: var(--secondary-color);
            width: 50px; height: 50px;
            border-radius: 10px;
            display: grid;
            place-items: center;
        }
        .security-icon svg { width: 28px; height: 28px; }
        .security-text h3 { font-size: 1.2rem; }
        .security-text p { font-size: 1rem; line-height: 1.6; margin-bottom: 0; }

        #features { background-color: var(--white-color); }
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            max-width: 1000px;
            margin: 0 auto;
        }
        .comparison-card {
            border: 1px solid #e2e8f0;
            border-radius: 12px;
            padding: 2rem;
        }
        .comparison-card h3 {
            text-align: center;
            margin-bottom: 2rem;
        }
        .comparison-card ul {
            list-style: none;
        }
        .comparison-card li {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
            font-weight: 500;
        }
        .comparison-card .icon {
            margin-right: 1rem;
            font-size: 1.2rem;
        }
        .comparison-card .check { color: var(--success-color); }
        .comparison-card .cross { color: var(--danger-color); }

        #faq { background-color: var(--secondary-color); }
        .faq-container { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--white-color); border: 1px solid var(--border-color);
            border-radius: 8px; margin-bottom: 1rem; transition: all 0.3s ease;
        }
        .faq-item.active {
            border-color: var(--primary-color);
            box-shadow: 0 4px 15px rgba(0, 167, 181, 0.1);
        }
        .faq-question {
            padding: 20px; cursor: pointer; display: flex;
            justify-content: space-between; align-items: center;
            font-weight: 600; font-size: 1.1rem; color: var(--dark-color);
        }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: max-height 0.4s ease-in-out, padding 0.4s ease;
            padding: 0 20px;
        }
        .faq-answer p { font-size: 1rem; }
        .faq-item.active .faq-answer { max-height: 200px; padding: 0 20px 20px; }
        .faq-toggle { font-size: 1.5rem; transition: transform 0.3s ease; color: var(--primary-color); }
        .faq-item.active .faq-toggle { transform: rotate(45deg); }

        #signup { background: var(--white-color); color: var(--dark-color); text-align: center; }
        #signup h2, #signup p { color: var(--dark-color); }
        #signup p { font-size: 1.2rem; opacity: 0.9; max-width: 700px; margin: 1rem auto 2rem;}
        #signup .button-primary {
            background-color: #ffffff;
            border: 1px solid #034c55;
            color: #034c55;
        }
        #signup .button-primary:hover { 
            border: 1px solid var(--border-color);
        }

        footer { background-color: var(--dark-color); color: #A0AEC0; padding: 60px 0 20px; }
        .footer-grid {
            display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px;
        }
        .footer-column h4 { color: var(--white-color); margin-bottom: 1.5rem; font-size: 1.1rem; }
        .footer-column ul { list-style: none; }
        .footer-column ul li { margin-bottom: 0.8rem; }
        .footer-column a { color: #A0AEC0; transition: color 0.3s ease; }
        .footer-column a:hover { color: var(--white-color); }
        .footer-bottom { text-align: center; border-top: 1px solid #4A5568; padding-top: 20px; font-size: 0.9rem; }
        .footer-bottom a { color: #A0AEC0; }
        
        .fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease-out, transform 0.8s ease-out; }
        .fade-in.visible { opacity: 1; transform: translateY(0); }

        @media (max-width: 992px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            .hero-container { flex-direction: column; text-align: center; }
            .hero-text { order: 2; }
            .hero-mockup-area { order: 1; width: 100%; max-width: 500px; margin-bottom: 2rem; }
            .floating-card { display: none; } /* Hide floating cards on smaller screens to reduce clutter */
            .use-case-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            #main-nav {
                position: absolute; top: 100%; left: 0; width: 100%; background-color: var(--white-color);
                box-shadow: 0 4px 8px rgba(3, 76, 85, 0.05); flex-direction: column;
                max-height: 0; overflow: hidden; transition: max-height 0.5s ease-in-out;
            }
            #main-nav.active { max-height: 500px; padding: 1rem 0; }
            #main-nav ul { flex-direction: column; width: 100%; }
            #main-nav ul li { margin: 1rem 0; width: 100%; text-align: center; }
            .menu-toggle { display: block; }
            .menu-toggle.active .bar:nth-child(2) { opacity: 0; }
            .menu-toggle.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
            .menu-toggle.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
            
            .steps-container { flex-direction: column; }
            .use-case-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
            .footer-grid { grid-template-columns: 1fr; }
        }