body {
    font-family: "Prompt", sans-serif;
    margin: 0;
    background: #ffffff;
    color: #333;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
}

/* HEADER */
.header {
    background: #ffffff;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}
.header .logo img {
    height: 48px;
}
.nav a {
    margin-left: 25px;
    color: #444;
    text-decoration: none;
    font-weight: 500;
}
.btn-demo {
    padding: 8px 14px;
    background: #d4a38c;
    color: white;
    border-radius: 6px;
}

/* HERO */
.hero {
    text-align: center;
    padding: 80px 20px;
    background: #fff7f4;
}
.hero h1 {
    font-size: 42px;
    color: #c27d60;
}
.hero p {
    font-size: 20px;
    margin-bottom: 30px;
}
.btn-primary {
    background: #c27d60;
    padding: 14px 26px;
    border-radius: 8px;
    color: white;
    text-decoration: none;
}

/* IMAGE FRAME */
.image-frame img, .hero-image-frame img {
    width: 100%;
    border-radius: 12px;
}

/* FEATURES */
.features {
    padding: 60px 0;
}
.features h2 {
    text-align: center;
    margin-bottom: 50px;
    color: #c27d60;
}
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}
.feature-box {
    text-align: center;
}

/* PRICING */
.pricing {
    padding: 60px 0;
    background: #fff7f4;
}
.pricing h2 {
    text-align: center;
    color: #c27d60;
}
.pricing-grid {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}
.pricing-box {
    width: 300px;
    border: 1px solid #f0d6cb;
    padding: 25px;
    border-radius: 14px;
    background: #fff;
    text-align: center;
}
.pricing-box.highlight {
    border: 2px solid #c27d60;
}
.price {
    font-size: 28px;
    color: #c27d60;
    font-weight: bold;
}
.disable {
    color: #aaa;
    text-decoration: line-through;
}

/* CONTACT */
.contact {
    padding: 60px 0;
    text-align: center;
}
.contact-box {
    font-size: 20px;
}
.contact-box a {
    color: #c27d60;
    text-decoration: none;
}

/* FOOTER */
.footer {
    text-align: center;
    padding: 20px;
    background: #eee;
    margin-top: 50px;
}


/* ============================================================
   MOBILE RESPONSIVE (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {

    body {
        font-size: 16px;
    }

    /* HEADER */
    .container {
        width: 92%;
    }

    .header .logo img {
        height: 40px;
    }

    .nav {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        margin-top: 15px;
    }

    .nav a {
        margin: 5px 10px;
        font-size: 16px;
    }

    .btn-demo {
        margin-top: 10px;
        padding: 10px 18px;
        font-size: 16px;
    }


    /* HERO */
    .hero {
        padding: 60px 20px;
    }

    .hero h1 {
        font-size: 28px;
        line-height: 1.4;
    }

    .hero p {
        font-size: 18px;
        margin-top: 10px;
        margin-bottom: 25px;
    }

    .btn-primary {
        padding: 12px 20px;
        font-size: 16px;
        display: inline-block;
    }

    .hero-image-frame img {
        margin-top: 25px;
        border-radius: 10px;
    }


    /* FEATURES */
    .features {
        padding: 40px 0;
    }

    .features h2 {
        font-size: 26px;
        margin-bottom: 30px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .feature-box h3 {
        font-size: 20px;
    }

    .feature-box p {
        font-size: 16px;
    }

    .image-frame img {
        border-radius: 10px;
    }


    /* PRICING */
    .pricing {
        padding: 50px 0;
    }

    .pricing h2 {
        font-size: 26px;
    }

    .pricing-grid {
        flex-direction: column;
        gap: 25px;
    }

    .pricing-box {
        width: 100%;
        padding: 22px;
        border-radius: 12px;
    }

    .pricing-box h3 {
        font-size: 22px;
    }

    .price {
        font-size: 26px;
    }

    .sub-price {
        font-size: 15px;
    }

    .pricing-box ul li {
        font-size: 16px;
        margin: 6px 0;
    }


    /* CONTACT SECTION */
    .contact h2 {
        font-size: 26px;
    }

    .contact-box {
        font-size: 18px;
    }

    .contact-box a.btn-primary {
        display: inline-block;
        margin-top: 20px;
        padding: 14px 22px;
        font-size: 17px;
    }


    /* FOOTER */
    .footer {
        padding: 18px;
        font-size: 14px;
    }
}



/* ============================================================
   EXTRA SMALL MOBILE (≤ 480px)
   เหมาะสำหรับ iPhone SE, Android จอเล็กมาก
   ============================================================ */
@media (max-width: 480px) {

    .hero h1 {
        font-size: 24px;
    }

    .hero p {
        font-size: 16px;
    }

    .btn-primary,
    .btn-demo {
        font-size: 15px;
        padding: 10px 18px;
    }

    .nav a {
        font-size: 14px;
        margin: 4px 8px;
    }

    .pricing-box {
        padding: 20px;
    }

    .pricing-box h3 {
        font-size: 20px;
    }

    .price {
        font-size: 24px;
    }

    .contact-box {
        font-size: 17px;
    }

    .footer {
        font-size: 13px;
    }
}



/* ============================================================
   TABLET (768px – 1024px)
   ============================================================ */
@media (min-width: 769px) and (max-width: 1024px) {

    .hero h1 {
        font-size: 34px;
    }

    .hero p {
        font-size: 19px;
    }

    .pricing-grid {
        flex-wrap: wrap;
        justify-content: center;
        gap: 30px;
    }

    .pricing-box {
        width: 45%;
    }

    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}