/* === Global Styles === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background-color: #f4f4f4;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* === Section Header & Divider === */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 500;
    display: inline-block;
    position: relative;
    padding-bottom: 10px;
    margin-bottom: 0;
}

.section-header h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 3px;
    background-color: #78909c;
}

/* === Hero Section (Auto Play) === */
.hero-section {
    width: 100%;
    height: 450px;
    position: relative;
    overflow: hidden;
    background-color: #000;
}

.bg-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    pointer-events: none;
}

/* --- Business Introduction === */
.business-intro {
    background-color: #37474f;
    color: white;
    padding: 60px 0;
    text-align: center;
}

.business-intro .section-header h2::after {
    background-color: #eceff1;
}

.content-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 50px;
    text-align: left;
}

.text-content {
    flex: 1;
    color: #eceff1;
}

.text-content p {
    font-size: 1rem;
    line-height: 1.8;
    text-indent: 50px;
    text-align: justify;
    margin: 0;
}

.video-content {
    flex: 1;
    position: relative;
}

.video-thumbnail {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 4px;
}

.video-thumbnail video {
    width: 100%;
    height: auto;
    display: block;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    pointer-events: none;
    border-radius: 4px;
}

/* === Custom Progress Bar Styles === */
.custom-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background-color: rgba(255, 255, 255, 0.3);
    z-index: 10;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background-color: #00bcd4;
    transition: width 0.1s linear;
}

.time-badge {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-family: monospace;
    pointer-events: none;
    z-index: 10;
}

/* --- Core Product --- */
.core-product {
    padding: 60px 0;
    background-color: #ffffff;
    text-align: center;
}

.core-diagram-container {
    margin-bottom: 5%;
    text-align: center;
}

.core-diagram-img {
    max-width: 80%;
    height: auto;
    display: inline-block;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 20px;
}

.product-card {
    text-align: left;
}

.product-img {
    width: 100%;
    height: 200px;
    margin-bottom: 15px;
    overflow: hidden;
    border-radius: 4px;
    cursor: default;
    transition: transform 0.3s ease;
}

.product-img:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 10px;
}

.product-card ul {
    list-style: none;
    padding: 0;
}

.product-card ul li {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 5px;
    padding-left: 12px;
    position: relative;
}

.product-card ul li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #78909c;
}

/* --- CUSTOMER SERVICE --- */
.customer-service {
    background-color: #37474f;
    padding: 80px 0;
    color: white;
    position: relative;
    overflow: hidden;
}

.customer-service .section-header h2 {
    border-bottom: none;
}

.customer-service .section-header h2::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -20px;
    transform: translateX(-50%);
    width: 300px;
    height: 2px;
    background-color: rgba(255, 255, 255, 0.3);
}

.service-content-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    margin-top: 50px;
}

.service-image {
    flex: 1.2;
    display: flex;
    justify-content: flex-end;
}

.service-image img {
    max-width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: contain;
}

.service-text-list {
    flex: 1;
    padding-left: 20px;
    text-align: left;
}

.service-text-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.service-text-list li {
    font-size: 1.15rem;
    color: #eceff1;
    margin-bottom: 20px;
    line-height: 1.6;
    font-weight: 300;
}

/* --- Customer Case --- */
.customer-case {
    background-color: #ffffff;
    padding: 60px 0;
    padding-bottom: 0;

}
.core-diagram-container {
    margin-bottom: 0dvb;
    text-align: center;
    
}

.core-diagram-img {
    max-width: 80%;
    height: auto;
    display: inline-block;
}
.core-diagram-img2 {
    max-width: 100%;
    height: auto;
    display: inline-block;
}


.case-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 15px;
    max-width: 1200px;
    margin: 40px auto 0;
    padding: 0 10px;
}

.case-item {
    height: 150px;
    flex: 0 0 calc(20% - 15px);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
    transition: transform 0.3s ease;
}

.case-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.case-item:hover {
    transform: scale(1.1);
}

/* =========================================
   === RESPONSIVE DESIGN (MOBILE & TABLET) ===
   ========================================= */

@media (max-width: 992px) {
    .case-item {
        flex: 0 0 calc(33.33% - 15px);
        height: 120px;
    }
}

@media (max-width: 768px) {

    /* 1. Hero Section ปรับความสูงลงให้เหมาะกับมือถือ */
    .hero-section {
        height: 300px;
    }

    /* 2. Business Introduction */
    .business-intro {
        padding: 40px 0;
    }

    .business-intro .content-wrapper {
        flex-direction: column;
        /* เปลี่ยนจากแนวนอนเป็นแนวตั้ง */
        gap: 30px;
        text-align: center;
    }

    /* === เพิ่ม order: 2 เพื่อดันกรอบข้อความให้ลงมาอยู่ข้างล่าง === */
    .business-intro .text-content {
        order: 2;
    }

    .business-intro .text-content p {
        text-indent: 0;
        /* เอาย่อหน้าออกในมือถือ */
        text-align: center;
        /* เปลี่ยนเป็นกึ่งกลางเพื่อความสวยงาม */
        font-size: 0.95rem;
    }

    .business-intro .video-content {
        width: 100%;
        /* === เพิ่ม order: 1 เพื่อดันกรอบวิดีโอให้ขึ้นไปอยู่ด้านบนสุด === */
        order: 1;
    }

    /* 3. Core Product & Diagram */
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .core-diagram-img {
        max-width: 100%;
    }

    /* 4. Customer Service */
    .service-content-wrapper {
        flex-direction: column;
        text-align: center;
    }

    .service-image {
        justify-content: center;
        margin-bottom: 30px;
    }

    .service-text-list {
        padding-left: 0;
        text-align: center;
    }

    .service-text-list li {
        font-size: 1rem;
    }
}

@media (max-width: 576px) {

    /* ปรับ Case Logo ให้เล็กลงอีกนิดในมือถือจอเล็ก */
    .case-item {
        flex: 0 0 calc(50% - 10px);
        height: 100px;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {

    /* Product Grid ให้แสดงแถวละ 1 รูป */
    .product-grid {
        grid-template-columns: 1fr;
    }
}