:root {
        --primary: #4361ee;
        --primary-dark: #3a56d4;
        --secondary: #3f37c9;
        --accent: #4895ef;
        --light: #f8f9fa;
        --dark: #212529;
        --success: #4cc9f0;
        --warning: #f8961e;
        --danger: #f72585;
        --gray: #6c757d;
        --light-gray: #e9ecef;
        
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
        --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
        --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
        --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

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

    body {
        font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
        line-height: 1.6;
        color: var(--dark);
        background-color: #f8fafc;
        min-height: 100vh;
        display: grid;
        grid-template-rows: auto 1fr auto;
        overflow-x: hidden;
        width: 100%;
    }

    .container {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 1.5rem;
    }

    /* Header */
    header {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        box-shadow: var(--shadow-sm);
        position: sticky;
        top: 0;
        z-index: 100;
        width: 100%;
    }

    .header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1rem;
        max-width: 100%;
    }

    .logo {
        font-size: 1.6rem;
        font-weight: 700;
        background: linear-gradient(45deg, var(--primary), var(--secondary));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        display: flex;
        align-items: center;
        gap: 0.5rem;
        text-decoration: none;
    }

    .logo-icon {
        font-size: 1.3rem;
    }

    .nav-links {
        display: flex;
        gap: 1.5rem;
    }

    .nav-link {
        color: var(--gray);
        text-decoration: none;
        font-weight: 500;
        transition: var(--transition);
        position: relative;
    }

    .nav-link:hover {
        color: var(--primary);
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: -4px;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--primary);
        transition: var(--transition);
    }

    .nav-link:hover::after {
        width: 100%;
    }

    /* Hamburger Menu */
    .hamburger {
        display: none;
        font-size: 1.5rem;
        background: none;
        border: none;
        color: var(--gray);
        cursor: pointer;
        z-index: 101;
    }

    /* Hero section */
    .hero {
        text-align: center;
        padding: 3rem 0;
        position: relative;
        overflow: hidden;
    }

    .hero::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(circle, rgba(0, 72, 255, 0.1) 0%, rgba(255,255,255,0) 70%);
        z-index: -1;
        animation: pulse 15s infinite alternate;
        will-change: transform;
    }

    @keyframes pulse {
        0% { transform: translate(0, 0); }
        50% { transform: translate(50px, 50px); }
        100% { transform: translate(0, 0); }
    }

    .hero-title {
        font-size: 2.5rem;
        font-weight: 800;
        margin-bottom: 1rem;
        background: linear-gradient(45deg, var(--primary), var(--secondary));
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 1.1rem;
        color: var(--gray);
        max-width: 600px;
        margin: 0 auto 1.5rem;
    }

    /* Main tool section */
    .tool-container {
        display: grid;
        grid-template-columns: 1fr 300px;
        gap: 1.5rem;
        margin-top: 1.5rem;
        max-width: 100%;
    }

    .tool-card {
        background: white;
        border-radius: 12px;
        box-shadow: var(--shadow-md);
        padding: 1.5rem;
        transition: var(--transition);
        max-width: 100%;
    }

    .tool-card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-5px);
    }

    .tool-header {
        display: flex;
        align-items: center;
        margin-bottom: 1rem;
    }

    .tool-icon {
        width: 40px;
        height: 40px;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-right: 0.75rem;
        color: white;
        font-size: 1.2rem;
        flex-shrink: 0;
    }

    .tool-title {
        font-size: 1.3rem;
        font-weight: 600;
        color: var(--dark);
    }

    .form-group {
        margin-bottom: 1rem;
    }

    .form-label {
        display: block;
        margin-bottom: 0.5rem;
        font-weight: 500;
        color: var(--dark);
    }

    input[type="text"], textarea {
        width: 100%;
        padding: 0.6rem 0.8rem;
        border: 2px solid var(--light-gray);
        border-radius: 6px;
        font-family: inherit;
        transition: var(--transition);
    }

    input[type="text"]:focus, textarea:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
    }

    textarea {
        min-height: 80px;
        resize: vertical;
    }

    .btn-group {
        display: flex;
        gap: 0.5rem;
        flex-wrap: wrap;
        margin-bottom: 1rem;
    }

    .btn {
        padding: 0.7rem 1.5rem;
        border-radius: 6px;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition);
        border: none;
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.9rem;
    }

    .btn-primary {
        background: linear-gradient(135deg, var(--primary), var(--accent));
        color: white;
        box-shadow: 0 4px 6px rgba(67, 97, 238, 0.2);
    }

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 7px 14px rgba(67, 97, 238, 0.2);
    }

    .btn-outline {
        background: white;
        border: 2px solid var(--light-gray);
        color: var(--gray);
    }

    .btn-outline:hover {
        border-color: var(--primary);
        color: var(--primary);
    }

    .progress-container {
        margin-top: 1rem;
        padding: 1rem;
        background-color: var(--light);
        border-radius: 6px;
        border-left: 4px solid var(--primary);
        display: none;
    }

    .progress-bar {
        height: 8px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
        border-radius: 4px;
        transition: width 0.3s ease;
    }

    .progress-stats {
        margin-top: 0.5rem;
        font-size: 0.9rem;
        color: var(--gray);
    }

    .status {
        display: none;
        align-items: center;
        gap: 0.5rem;
        padding: 0.75rem;
        border-radius: 6px;
        margin-top: 1rem;
        font-size: 0.9rem;
    }

    .status-success {
        background-color: rgba(76, 201, 240, 0.1);
        color: var(--success);
        border: 1px solid var(--success);
    }

    .status-warning {
        background-color: rgba(248, 150, 30, 0.1);
        color: var(--warning);
        border: 1px solid var(--warning);
    }

    .status-error {
        background-color: rgba(247, 37, 133, 0.1);
        color: var(--danger);
        border: 1px solid var(--danger);
    }

    .status-icon {
        font-size: 1rem;
    }

    /* How It Works Section */
    .how-it-works {
        margin: 3rem 0;
        position: relative;
    }

    .how-it-works::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, rgba(67, 97, 238, 0.03) 0%, rgba(255,255,255,0) 100%);
        z-index: -1;
        border-radius: 12px;
    }

    .steps-container {
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
        position: relative;
    }

    .steps-container::before {
        content: '';
        position: absolute;
        top: 30px;
        left: 20px;
        height: calc(100% - 60px);
        width: 4px;
        background: linear-gradient(to bottom, var(--primary), var(--accent));
        border-radius: 2px;
    }

    .step {
        display: flex;
        gap: 1rem;
        align-items: flex-start;
        background: white;
        padding: 1rem;
        border-radius: 10px;
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        position: relative;
        max-width: 100%;
    }

    .step:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow-md);
    }

    .step-number {
        width: 40px;
        height: 40px;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        color: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 1rem;
        flex-shrink: 0;
    }

    .step-content h3 {
        font-size: 1.1rem;
        margin-bottom: 0.5rem;
        color: var(--primary-dark);
    }

    .step-content p {
        color: var(--gray);
        line-height: 1.5;
    }

    /* Features Section */
    .why-use {
        margin: 3rem 0;
    }

    .benefits-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1rem;
        margin-top: 1.5rem;
        max-width: 100%;
    }

    .benefit-card {
        background: white;
        border-radius: 10px;
        padding: 1.5rem;
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        border-top: 4px solid var(--primary);
        position: relative;
        overflow: hidden;
        max-width: 100%;
    }

    .benefit-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, rgba(67, 97, 238, 0.03) 0%, rgba(255,255,255,0) 100%);
        z-index: -1;
    }

    .benefit-card:hover {
        transform: translateY(-5px);
        box-shadow: var(--shadow-md);
    }

    .benefit-icon {
        width: 48px;
        height: 48px;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 1rem;
        color: white;
        font-size: 1.2rem;
    }

    .benefit-card h3 {
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
        color: var(--dark);
    }

    .benefit-card p {
        color: var(--gray);
        line-height: 1.5;
    }

    /* Features sidebar */
    .features-sidebar {
        position: sticky;
        top: 80px;
        height: fit-content;
        max-width: 100%;
    }

    .features-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .feature-card {
        background: white;
        border-radius: 10px;
        padding: 1rem;
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
        border: 1px solid var(--light-gray);
        max-width: 100%;
    }

    .feature-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-md);
        border-color: var(--primary);
    }

    .feature-icon {
        width: 36px;
        height: 36px;
        background: linear-gradient(135deg, var(--primary), var(--accent));
        border-radius: 8px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 0.75rem;
        color: white;
        font-size: 1.1rem;
    }

    .feature-card h3 {
        margin-bottom: 0.5rem;
        color: var(--dark);
        font-size: 1rem;
    }

    .feature-card p {
        color: var(--gray);
        font-size: 0.9rem;
    }

    /* Use Cases Section */
    .use-cases {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1rem;
        margin: 1.5rem 0;
        max-width: 100%;
    }

    .use-case {
        background: white;
        border-radius: 6px;
        padding: 1rem;
        box-shadow: var(--shadow-sm);
        border-top: 3px solid var(--primary);
        max-width: 100%;
    }

    .use-case h3 {
        color: var(--secondary);
        margin-bottom: 0.5rem;
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 1rem;
    }

    /* FAQ Section Styles */
    .faq-item {
        margin-bottom: 10px;
        border: 1px solid #e0e0e0;
        border-radius: 6px;
        overflow: hidden;
        transition: all 0.3s ease;
        max-width: 100%;
    }

    .faq-question {
        padding: 12px 15px;
        background-color: #f9f9f9;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        font-weight: 600;
        font-size: 0.95rem;
    }

    .faq-question:hover {
        background-color: #f0f0f0;
    }

    .faq-question i {
        transition: transform 0.3s ease;
    }

    .faq-answer {
        padding: 0 15px;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        background-color: #fff;
    }

    .faq-item.active .faq-answer {
        padding: 12px 15px;
        max-height: 400px;
    }

    /* Section Titles */
    .section-title {
        font-size: 1.8rem;
        font-weight: 700;
        margin-bottom: 1rem;
        color: var(--dark);
        position: relative;
        display: inline-block;
    }

    .section-title::after {
        content: '';
        position: absolute;
        bottom: -6px;
        left: 0;
        width: 50px;
        height: 3px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
        border-radius: 2px;
    }

    .section-subtitle {
        font-size: 1rem;
        color: var(--gray);
        max-width: 600px;
        margin-bottom: 1.5rem;
    }

    /* Footer */
    footer {
        background: var(--dark);
        color: white;
        padding: 2rem 0;
        margin-top: 2rem;
        width: 100%;
    }

    .footer-content {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: 1.5rem;
        max-width: 100%;
    }

    .footer-column h3 {
        font-size: 1rem;
        margin-bottom: 1rem;
        color: white;
        position: relative;
        padding-bottom: 0.5rem;
    }

    .footer-column h3::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 30px;
        height: 2px;
        background: var(--success);
    }

    .footer-links {
        list-style: none;
    }

    .footer-link {
        margin-bottom: 0.5rem;
    }

    .footer-link a {
        color: rgba(255,255,255,0.7);
        text-decoration: none;
        transition: var(--transition);
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.9rem;
    }

    .footer-link a:hover {
        color: white;
        padding-left: 5px;
    }

    .copyright {
        text-align: center;
        margin-top: 2rem;
        padding-top: 1rem;
        border-top: 1px solid rgba(255,255,255,0.1);
        color: rgba(255,255,255,0.6);
        font-size: 0.85rem;
    }


    /* Screen Reader Only */
    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        border: 0;
    }

    /* Responsive adjustments */
    @media (max-width: 992px) {
        .tool-container {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 768px) {
        body {
            overflow-x: hidden;
        }

        .container {
            padding: 1rem;
            max-width: 100%;
            overflow-x: hidden;
        }

        .header-content {
            flex-direction: row;
            padding: 0.75rem;
        }

        .hamburger {
            display: block;
        }

        .nav-links {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: rgba(255, 255, 255, 0.95);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            z-index: 100;
            transition: transform 0.3s ease;
            transform: translateY(-100%);
            overflow-x: hidden;
        }

        .nav-links.active {
            display: flex;
            transform: translateY(0);
        }

        .nav-link {
            font-size: 1.2rem;
        }

        .hero::before {
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            transform: none;
        }

        .hero-title {
            font-size: 1.8rem;
        }

        .hero-subtitle {
            font-size: 0.95rem;
        }

        .tool-container,
        .benefits-grid,
        .use-cases {
            max-width: 100%;
            overflow-x: hidden;
        }

        .tool-card {
            padding: 1rem;
        }

        .features-sidebar {
            position: static;
            top: 0;
        }

        .steps-container::before {
            left: 18px;
        }

        .step {
            flex-direction: column;
            gap: 0.75rem;
            padding: 0.75rem;
        }

        .step-number {
            width: 36px;
            height: 36px;
            font-size: 0.9rem;
        }

        .section-title {
            font-size: 1.5rem;
        }

        .benefits-grid, .use-cases {
            grid-template-columns: 1fr;
        }

        .ad-container,
        iframe {
            max-width: 100%;
            overflow-x: hidden;
            box-sizing: border-box;
        }
    }

    @media (max-width: 480px) {
        .hero-title {
            font-size: 1.5rem;
        }

        .hero-subtitle {
            font-size: 0.9rem;
        }

        .section-title {
            font-size: 1.3rem;
        }

        .btn {
            padding: 0.6rem 1.2rem;
            font-size: 0.85rem;
        }

        .footer-content {
            grid-template-columns: 1fr;
            text-align: center;
        }

        .footer-column h3::after {
            left: 50%;
            transform: translateX(-50%);
        }
    }