:root {
        --primary-color: #FE2C55;
        --primary-hover: #e01e4d;
        --secondary-color: #25F4EE;
        --secondary-hover: #1de0d8;
        --dark-color: #0F0F0F;
        --light-color: #FFFFFF;
        --gray-color: #F1F1F2;
        --border-radius: 12px;
        --box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
        --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        --gradient: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
        
        /* Notification Colors */
        --success-color: #4BB543;
        --error-color: #FF3333;
        --warning-color: #FF9500;
        --info-color: #2F80ED;

        /* Responsive breakpoints */
        --breakpoint-mobile: 480px;
        --breakpoint-tablet: 768px;
        --breakpoint-desktop: 992px;
        --breakpoint-large: 1200px;
    }

    * {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
        font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
        -webkit-tap-highlight-color: transparent;
    }

    body {
        background-color: #f8fafc;
        color: var(--dark-color);
        line-height: 1.6;
        position: relative;
        min-height: 100vh;
        overflow-x: hidden;
    }

    /* Hero Section */
    .hero {
        background: var(--gradient);
        color: white;
        padding: 3rem 1.5rem;
        text-align: center;
        position: relative;
        overflow: hidden;
    }

    @media (min-width: 768px) {
        .hero {
            padding: 4rem 2rem;
        }
    }

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: url('https://images.unsplash.com/photo-1598300042247-d088f8ab3a91?ixlib=rb-4.0.3') no-repeat center center;
        background-size: cover;
        opacity: 0.15;
        z-index: 0;
    }

    .hero-content {
        position: relative;
        z-index: 1;
        max-width: 800px;
        margin: 0 auto;
    }

    .hero h1 {
        font-size: 1.6rem;
        font-weight: 700;
        margin-bottom: 1rem;
        line-height: 1.2;
    }

    .hero p {
        font-size: 1.1rem;
        margin-bottom: 2rem;
        opacity: 0.9;
    }

    @media (min-width: 768px) {
        .hero h1 {
            font-size: 2rem;
        }
        .hero p {
            font-size: 1.2rem;
        }
    }

    /* Navigation Bar */
    .navbar {
        background-color: var(--light-color);
        box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
        padding: 1rem;
        position: sticky;
        top: 0;
        z-index: 1000;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    @media (min-width: 768px) {
        .navbar {
            padding: 0.4rem 2rem;
        }
    }

    .logo {
        display: flex;
        align-items: center;
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--dark-color);
        text-decoration: none;
    }

    .logo img {
        height: 40px;
        margin-right: 12px;
        margin-left: 12px;
    }

    @media (min-width: 768px) {
        .logo {
            font-size: 1.8rem;
        }
    }

    .nav-links {
        display: none;
        list-style: none;
        align-items: center;
    }

    @media (min-width: 768px) {
        .nav-links {
            display: flex;
        }
    }

    .nav-links li {
        margin-left: 1.5rem;
    }

    @media (min-width: 992px) {
        .nav-links li {
            margin-left: 2.5rem;
        }
    }

    .nav-links a {
        color: var(--dark-color);
        text-decoration: none;
        font-weight: 600;
        transition: var(--transition);
        position: relative;
        padding: 0.5rem 0;
        font-size: 1rem;
    }

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

    /* Mobile menu styles */
    .mobile-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: white;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        z-index: 1001;
        overflow-y: auto;
    }

    .mobile-menu.active {
        right: 0;
    }

    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 1000;
    }

    .mobile-menu-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    .mobile-menu-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1rem 1.5rem;
        border-bottom: 1px solid #eee;
    }

    .mobile-menu-logo img {
        height: 30px;
    }

    .mobile-menu-close {
        background: none;
        border: none;
        font-size: 1.5rem;
        color: var(--dark-color);
        cursor: pointer;
        padding: 0.5rem;
    }

    .mobile-nav-links {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .mobile-nav-links li {
        margin: 0;
        width: 100%;
    }

    .mobile-nav-links a {
        display: block;
        width: 100%;
        padding: 1rem 1.5rem;
        font-size: 1rem;
        color: var(--dark-color);
        text-decoration: none;
        font-weight: 600;
        transition: var(--transition);
        border-left: 4px solid transparent;
    }

    .mobile-nav-links a:hover {
        color: var(--primary-color);
        background-color: rgba(254, 44, 85, 0.05);
        border-left-color: var(--primary-color);
    }

    .mobile-menu-btn {
        display: none;
        background: none;
        border: none;
        color: var(--dark-color);
        font-size: 1.5rem;
        cursor: pointer;
        z-index: 1002;
        padding: 0.5rem;
        transition: var(--transition);
    }

    .mobile-menu-btn .fa-times {
        display: none;
    }

    .mobile-menu-btn.active .fa-bars {
        display: none;
    }

    .mobile-menu-btn.active .fa-times {
        display: inline;
    }

    @media (max-width: 768px) {
        .nav-links {
            display: none;
        }
        
        .mobile-menu-btn {
            display: block;
        }
    }

    /* Main Content */
    .main-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 1.5rem;
    }

    @media (min-width: 768px) {
        .main-container {
            padding: 2rem;
        }
    }

    .tool-container {
        background-color: var(--light-color);
        border-radius: var(--border-radius);
        box-shadow: var(--box-shadow);
        padding: 1.5rem;
        margin-top: -60px;
        position: relative;
        z-index: 2;
    }

    @media (min-width: 768px) {
        .tool-container {
            padding: 2rem;
        }
    }

    @media (min-width: 992px) {
        .tool-container {
            padding: 3rem;
        }
    }

    .tool-container::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 6px;
        background: var(--gradient);
    }

    /* Typography */
    h1, h2, h3, h4 {
        color: var(--dark-color);
        font-weight: 700;
        line-height: 1.3;
    }

    h2 {
        font-size: 1.6rem;
        margin-bottom: 1.2rem;
        position: relative;
        padding-bottom: 12px;
    }

    @media (min-width: 768px) {
        h2 {
            font-size: 2rem;
            margin-bottom: 1.5rem;
            padding-bottom: 15px;
        }
    }

    h2::after {
        display: flex;
        content: '';
        position: absolute;
        justify-content: center;
        text-align: center;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 60px;
        height: 4px;
        background: var(--gradient);
        border-radius: 2px;
    }

    /* Keep the ASMR Prompt Generator h2 line on the left */
    .tool-container h2::after {
        left: 0;
        transform: none;
    }

    .subtitle {
        color: #666;
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    @media (min-width: 768px) {
        .subtitle {
            font-size: 1.1rem;
        }
    }

    /* Form Styles */
    .form-group {
        margin-bottom: 1.5rem;
    }

    .form-row {
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
        margin-bottom: 1.5rem;
    }

    @media (min-width: 768px) {
        .form-row {
            flex-direction: row;
            gap: 1.8rem;
        }
    }

    .form-row .form-group {
        flex: 1;
    }

    label {
        display: block;
        margin-bottom: 0.6rem;
        font-weight: 600;
        font-size: 0.95rem;
        color: #444;
    }

    @media (min-width: 768px) {
        label {
            margin-bottom: 0.8rem;
            font-size: 1rem;
        }
    }

    textarea, select, input[type="text"] {
        width: 100%;
        padding: 0.9rem 1.1rem;
        border: 1px solid #e0e0e0;
        border-radius: var(--border-radius);
        font-size: 0.95rem;
        transition: var(--transition);
        background-color: #f9f9f9;
    }

    @media (min-width: 768px) {
        textarea, select, input[type="text"] {
            padding: 1rem 1.2rem;
            font-size: 1rem;
        }
    }

    textarea:focus, select:focus, input[type="text"]:focus {
        outline: none;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(254, 44, 85, 0.1);
        background-color: var(--light-color);
    }

    textarea {
        resize: vertical;
        min-height: 100px;
        line-height: 1.6;
    }

    .char-counter {
        text-align: right;
        font-size: 0.8rem;
        color: #888;
        margin-top: 0.4rem;
    }

    /* Buttons */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 0.9rem 1.5rem;
        border-radius: var(--border-radius);
        font-size: 1rem;
        font-weight: 600;
        cursor: pointer;
        transition: var(--transition);
        text-decoration: none;
        border: none;
        gap: 0.6rem;
        min-height: 48px;
    }

    @media (min-width: 768px) {
        .btn {
            padding: 1rem 2rem;
            font-size: 1.05rem;
            gap: 0.8rem;
        }
    }

    .btn-primary {
        background-color: var(--primary-color);
        color: white;
    }

    .btn-primary:hover {
        background-color: var(--primary-hover);
        transform: translateY(-3px);
        box-shadow: 0 8px 20px rgba(254, 44, 85, 0.3);
    }

    .btn-secondary {
        background-color: var(--secondary-color);
        color: var(--dark-color);
    }

    .btn-secondary:hover {
        background-color: var(--secondary-hover);
        transform: translateY(-3px);
        box-shadow: 0 8px 20px rgba(37, 244, 238, 0.3);
    }

    .btn-outline {
        background-color: transparent;
        color: var(--primary-color);
        border: 2px solid var(--primary-color);
    }

    .btn-outline:hover {
        background-color: rgba(254, 44, 85, 0.05);
        transform: translateY(-3px);
    }

    .btn-block {
        width: 100%;
    }

    .btn .spinner {
        display: none;
        width: 18px;
        height: 18px;
        border: 3px solid rgba(255, 255, 255, 0.3);
        border-radius: 50%;
        border-top-color: white;
        animation: spin 1s ease-in-out infinite;
    }

    @keyframes spin {
        to { transform: rotate(360deg); }
    }

    /* Results section */
    .result-container {
        margin-top: 2rem;
        padding: 1.5rem;
        border: 1px solid #eaeaea;
        border-radius: var(--border-radius);
        background-color: #fefefe;
        box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    }

    @media (min-width: 768px) {
        .result-container {
            margin-top: 2.5rem;
            padding: 2rem;
        }
    }

    .hidden {
        display: none;
    }

    .prompt-result {
        margin-bottom: 1.2rem;
        padding: 1.2rem;
        background-color: var(--gray-color);
        border-radius: var(--border-radius);
        border-left: 4px solid var(--primary-color);
        line-height: 1.6;
        font-size: 1rem;
    }

    @media (min-width: 768px) {
        .prompt-result {
            margin-bottom: 1.5rem;
            padding: 1.5rem;
        }
    }

    #promptResult {
        font-family: 'Inter', sans-serif;
        font-size: 16px;
        line-height: 1.6;
        color: var(--dark-color);
        background: #f8f9fa;
        padding: 20px;
        border-radius: 8px;
        border-left: 4px solid var(--primary-color);
        white-space: pre-wrap;
        word-wrap: break-word;
    }

    .action-buttons {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        margin-top: 1.2rem;
    }

    @media (min-width: 480px) {
        .action-buttons {
            flex-direction: row;
        }
    }

    /* Features Section */
    .section-title {
        text-align: center;
        margin: 3rem 0 2rem;
    }

    @media (min-width: 768px) {
        .section-title {
            margin: 4rem 0 3rem;
        }
    }

    .section-title h2 {
        font-size: 1.8rem;
        color: var(--primary-color);
    }

    @media (min-width: 768px) {
        .section-title h2 {
            font-size: 2.2rem;
        }
    }

    .section-title p {
        color: #666;
        font-size: 1rem;
        max-width: 700px;
        margin: 0 auto 1rem;
    }

    @media (min-width: 768px) {
        .section-title p {
            font-size: 1.1rem;
            margin: 0 auto 2rem;
        }
    }

    .features {
        display: grid;
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin: 2rem 0;
    }

    @media (min-width: 600px) {
        .features {
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
    }

    .feature-card {
        background: white;
        border-radius: var(--border-radius);
        padding: 1.5rem;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
        transition: var(--transition);
        text-align: center;
    }

    @media (min-width: 768px) {
        .feature-card {
            padding: 2rem;
        }
    }

    .feature-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    }

    .feature-icon {
        width: 60px;
        height: 60px;
        background: var(--gradient);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 1.2rem;
        color: white;
        font-size: 1.5rem;
    }

    @media (min-width: 768px) {
        .feature-icon {
            width: 70px;
            height: 70px;
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
        }
    }

    .feature-card h3 {
        margin-bottom: 0.8rem;
        color: var(--dark-color);
        font-size: 1.3rem;
    }

    @media (min-width: 768px) {
        .feature-card h3 {
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }
    }

    .feature-card p {
        color: #666;
        line-height: 1.7;
        font-size: 0.95rem;
    }

    @media (min-width: 768px) {
        .feature-card p {
            font-size: 1rem;
        }
    }

    /* Footer */
    .footer {
        background-color: var(--dark-color);
        color: white;
        padding: 3rem 1.5rem 1.5rem;
        margin-top: 4rem;
    }

    @media (min-width: 768px) {
        .footer {
            padding: 4rem 2rem 2rem;
        }
    }

    .footer-content {
        max-width: 1200px;
        margin: 0 auto;
        text-align: center;
    }

    .footer-logo {
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 1.2rem;
    }

    .footer-logo img {
        height: 35px;
        margin-right: 10px;
    }

    .footer-bottom {
        text-align: center;
        padding-top: 1.5rem;
        margin-top: 1.5rem;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        color: #999;
        font-size: 0.85rem;
    }

    @media (min-width: 768px) {
        .footer-bottom {
            padding-top: 2rem;
            margin-top: 2rem;
            font-size: 0.9rem;
        }
    }

    /* Notification System */
    .notification-container {
        position: fixed;
        top: 20px;
        right: 20px;
        width: calc(100% - 40px);
        max-width: 350px;
        z-index: 10000;
        display: flex;
        flex-direction: column;
        gap: 12px;
    }

    @media (min-width: 480px) {
        .notification-container {
            top: 30px;
            right: 30px;
            width: 350px;
            max-width: calc(100% - 60px);
            gap: 15px;
        }
    }

    .notification {
        padding: 16px;
        border-radius: var(--border-radius);
        color: white;
        display: flex;
        align-items: flex-start;
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        transform: translateX(400px);
        transition: all 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55);
        opacity: 0;
        position: relative;
        overflow: hidden;
    }

    .notification.show {
        transform: translateX(0);
        opacity: 1;
    }

    .notification.success {
        background-color: var(--success-color);
    }

    .notification.error {
        background-color: var(--error-color);
    }

    .notification.warning {
        background-color: var(--warning-color);
    }

    .notification.info {
        background-color: var(--info-color);
    }

    .notification-icon {
        margin-right: 12px;
        font-size: 20px;
        margin-top: 2px;
        flex-shrink: 0;
    }

    .notification-content {
        flex: 1;
    }

    .notification-title {
        font-weight: 600;
        margin-bottom: 4px;
        font-size: 1rem;
    }

    .notification-message {
        font-size: 0.9rem;
        line-height: 1.5;
        opacity: 0.9;
    }

    .notification-close {
        background: none;
        border: none;
        color: white;
        font-size: 14px;
        cursor: pointer;
        margin-left: 12px;
        opacity: 0.7;
        transition: opacity 0.2s;
        padding: 0;
        align-self: flex-start;
    }

    .notification-close:hover {
        opacity: 1;
    }

    /* Loading Overlay */
    .loading-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(255, 255, 255, 0.8);
        z-index: 9999;
        display: flex;
        align-items: center;
        justify-content: center;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }

    .loading-overlay.active {
        opacity: 1;
        pointer-events: all;
    }

    .loading-spinner {
        width: 50px;
        height: 50px;
        border: 4px solid rgba(254, 44, 85, 0.2);
        border-radius: 50%;
        border-top-color: var(--primary-color);
        animation: spin 1s linear infinite;
    }

    @media (min-width: 768px) {
        .loading-spinner {
            width: 60px;
            height: 60px;
            border-width: 5px;
        }
    }

    /* Testimonials */
    .testimonials {
        margin: 4rem 0;
    }

    .testimonial-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-top: 3rem;
    }

    @media (min-width: 768px) {
        .testimonial-grid {
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2.5rem;
        }
    }

    .testimonial-card {
        background: white;
        border-radius: var(--border-radius);
        padding: 2rem;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
        transition: var(--transition);
        border-left: 4px solid var(--primary-color);
    }

    .testimonial-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    }

    .testimonial-content {
        font-size: 1.1rem;
        line-height: 1.7;
        color: #444;
        margin-bottom: 1.5rem;
        font-style: italic;
        position: relative;
    }

    .testimonial-content::before {
        /* content: '"'; */
        font-size: 3rem;
        color: var(--primary-color);
        position: absolute;
        top: -10px;
        left: -10px;
        font-family: serif;
    }

    .testimonial-author {
        display: flex;
        align-items: center;
        gap: 1rem;
    }

    .author-avatar {
        width: 50px;
        height: 50px;
        border-radius: 50%;
        object-fit: cover;
        border: 3px solid var(--gray-color);
    }

    .author-info h4 {
        margin: 0;
        font-size: 1.1rem;
        color: var(--dark-color);
    }

    .author-info p {
        margin: 0;
        font-size: 0.9rem;
        color: #666;
    }

    /* CTA Section */
    .cta-section {
        background: var(--gradient);
        color: white;
        padding: 3rem 2rem;
        border-radius: var(--border-radius);
        text-align: center;
        margin: 4rem 0;
        position: relative;
        overflow: hidden;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        /* background: url('https://images.unsplash.com/photo-1598300042247-d088f8ab3a91?ixlib=rb-4.0.3') no-repeat center center; */
        background-size: cover;
        opacity: 0.1;
        z-index: 0;
    }

    .cta-section h2 {
        position: relative;
        z-index: 1;
        font-size: 2rem;
        margin-bottom: 1rem;
        color: white;
    }

    .cta-section p {
        position: relative;
        z-index: 1;
        font-size: 1.2rem;
        margin-bottom: 2rem;
        opacity: 0.9;
    }

    .cta-buttons {
        position: relative;
        z-index: 1;
        display: flex;
        flex-direction: column;
        gap: 1rem;
        justify-content: center;
        align-items: center;
    }

    @media (min-width: 768px) {
        .cta-buttons {
            flex-direction: row;
            gap: 1.5rem;
        }
    }

    .btn-lg {
        padding: 1.2rem 2.5rem;
        font-size: 1.1rem;
        font-weight: 600;
    }