* {
    box-sizing: border-box;
}

body {
    font-family: 'Google Sans', sans-serif;
    margin: 0;
    background-color: #fff;
    color: #5f6368;
    line-height: 1.6;
}

header {
    background-color: #fff;
    padding: 20px 0;
    border-bottom: 1px solid #dadce0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #202124;
    cursor: pointer;
    padding: 5px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: #202124;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 30px;
    align-items: center;
    transition: all 0.3s ease;
}

nav ul li a {
    color: #5f6368;
    text-decoration: none;
    font-weight: 500;
}

.login-button {
    background-color: #1a73e8;
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
}

#hero {
    text-align: center;
    padding: clamp(60px, 15vw, 120px) 20px;
}

.hero-content h1 {
    font-size: clamp(32px, 8vw, 56px);
    margin-bottom: 20px;
    color: #202124;
    line-height: 1.2;
}

.hero-content p {
    font-size: clamp(16px, 4vw, 20px);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    background-color: #1a73e8;
    color: white;
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    margin-top: 1rem;
    display: inline-block;
}

.cta-button-outline {
    background-color: #fff;
    color: #1a73e8;
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    border: 1px solid #dadce0;
}

#features {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 20px;
    text-align: center;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.feature-item {
    padding: 40px;
}

.feature-item i {
    font-size: 48px;
    color: #1a73e8;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 24px;
    color: #202124;
    margin-bottom: 10px;
}

#pricing {
    background-color: #f8f9fa;
    padding: 80px 20px;
    text-align: center;
}

#pricing h2 {
    font-size: clamp(28px, 6vw, 36px);
    margin-bottom: 50px;
    color: #202124;
}

.pricing-plans {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.plan {
    background-color: white;
    padding: 40px;
    border-radius: 8px;
    border: 1px solid #dadce0;
}

.plan.featured {
    border: 2px solid #1a73e8;
}

.plan h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #202124;
}

.price {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #202124;
}

.price span {
    font-size: 18px;
    font-weight: 400;
    color: #5f6368;
}

.plan ul {
    list-style: none;
    padding: 0;
    margin-bottom: 30px;
    text-align: left;
}

.plan ul li {
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
}

.plan ul li:before {
    content: '\2713';
    color: #1a73e8;
    position: absolute;
    left: 0;
}

footer {
    background-color: #f8f9fa;
    text-align: center;
    padding: 40px 20px;
}

.footer-links {
    margin-bottom: 20px;
}

.footer-links a {
    color: #5f6368;
    text-decoration: none;
    margin: 0 10px;
    display: inline-block;
    padding: 5px 0;
}

/* Mobile Styles */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    nav ul {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: #fff;
        flex-direction: column;
        gap: 0;
        padding: 20px;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        z-index: 1000;
    }
    
    nav ul.mobile-menu-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    nav ul li {
        width: 100%;
        text-align: center;
        padding: 10px 0;
        border-bottom: 1px solid #f0f0f0;
    }
    
    nav ul li:last-child {
        border-bottom: none;
    }
    
    .login-button {
        display: inline-block;
        margin-top: 10px;
    }
    
    #hero {
        padding: 60px 20px;
    }
    
    .hero-content h1 {
        font-size: 32px;
        line-height: 1.2;
    }
    
    .hero-content p {
        font-size: 18px;
        margin-bottom: 30px;
    }
    
    .cta-button, .cta-button-outline {
        padding: 12px 24px;
        font-size: 14px;
        display: inline-block;
        margin: 5px;
    }
    
    #features {
        padding: 60px 20px;
    }
    
    .feature-list {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-top: 40px;
    }
    
    .feature-item {
        padding: 30px 20px;
    }
    
    .feature-item i {
        font-size: 36px;
    }
    
    .feature-item h3 {
        font-size: 20px;
    }
    
    #pricing {
        padding: 60px 20px;
    }
    
    #pricing h2 {
        font-size: 28px;
        margin-bottom: 40px;
    }
    
    .pricing-plans {
        grid-template-columns: 1fr;
        gap: 30px;
        max-width: 400px;
    }
    
    .plan {
        padding: 30px 20px;
    }
    
    .price {
        font-size: 36px;
    }
    
    footer {
        padding: 30px 20px;
    }
    
    .footer-links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
    }
    
    .footer-links a {
        margin: 5px;
        font-size: 14px;
    }
}

/* Small Mobile Styles */
@media (max-width: 480px) {
    nav {
        padding: 0 15px;
    }
    
    .logo {
        font-size: 20px;
    }
    
    #hero {
        padding: 40px 15px;
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    #features, #pricing {
        padding: 40px 15px;
    }
    
    .feature-item, .plan {
        padding: 20px 15px;
    }
    
    .pricing-plans {
        max-width: 100%;
    }
    
    .cta-button, .cta-button-outline {
        padding: 10px 20px;
        font-size: 14px;
        width: 100%;
        max-width: 200px;
        text-align: center;
    }
}

/* Tablet Styles */
@media (min-width: 769px) and (max-width: 1024px) {
    nav {
        padding: 0 30px;
    }
    
    #hero {
        padding: 100px 30px;
    }
    
    .hero-content h1 {
        font-size: 48px;
    }
    
    #features, #pricing {
        padding: 70px 30px;
    }
    
    .feature-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 35px;
    }
    
    .pricing-plans {
        grid-template-columns: repeat(2, 1fr);
        max-width: 700px;
    }
}

.chrome-store-button-container {
    margin-top: 2rem;
}

.chrome-store-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    background-color: #4285F4;
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    transition: background-color 0.3s ease;
    border: 1px solid transparent;
}

.chrome-store-button:hover {
    background-color: #3367D6;
}

.chrome-store-button i {
    margin-right: 8px;
    font-size: 20px;
}