/* ==================== 
   CSS VARIABLES (โทนสีเขียว)
==================== */
:root {
    --color-bg: #f4fbf4;
    --color-light: #E8F5E9;
    --color-primary: #4CAF50;
    --color-dark: #2E7D32;
    --color-accent: #81C784;
    --text-main: #333;
    --text-muted: #666;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

/* ==================== 
   RESET & BASIC STYLES
==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Prompt', sans-serif;
    background-color: var(--color-bg);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 
   TYPOGRAPHY
==================== */
h1, h2, h3, h4 {
    color: var(--color-dark);
    line-height: 1.2;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.section-divider {
    width: 80px;
    height: 4px;
    background-color: var(--color-accent);
    margin: 0 auto 1.5rem auto;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ==================== 
   NAVIGATION BAR
==================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-dark);
    cursor: pointer;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-dark));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-highlight {
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition);
}

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

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

/* ==================== 
   HERO SECTION
==================== */
.hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 20px 80px;
    overflow: hidden;
    text-align: center;
}

/* .hero-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url('https://images.unsplash.com/photo-1598008436531-137a1f592dae?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover no-repeat;
    background-attachment: fixed;
    filter: contrast(1.1) brightness(0.9);
    z-index: 0;
} */

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(46, 125, 50, 0.4) 0%, rgba(20, 40, 20, 0.7) 100%);
    z-index: 1;
}

/* Fog Animation */
/* .fog-layer {
    position: absolute;
    inset: 0;
    z-index: 2;
    background-repeat: repeat-x;
    background-size: auto 100%;
    background-position: 0 bottom;
    pointer-events: none;
}
.fog-1 {
    background-image: url('https://raw.githubusercontent.com/danielstuart14/CSS_FOG_ANIMATION/master/fog1.png');
    animation: moveFog1 60s linear infinite;
    opacity: 0.8;
}
.fog-2 {
    background-image: url('https://raw.githubusercontent.com/danielstuart14/CSS_FOG_ANIMATION/master/fog2.png');
    animation: moveFog2 40s linear infinite;
    opacity: 0.5;
}
@keyframes moveFog1 {
    0% { background-position: 0 bottom; }
    100% { background-position: 2000px bottom; }
}
@keyframes moveFog2 {
    0% { background-position: 0 bottom; }
    100% { background-position: -2000px bottom; }
} */
/* Video Background */
.hero-video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover; /* บังคับให้วิดีโอเต็มกรอบพอดี ไม่ผิดสัดส่วน */
    z-index: 0;
}

/* ปรับสี Overlay ทับวิดีโอให้กลมกลืนกับธีมสีเขียว */
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(46, 125, 50, 0.4) 0%, rgba(20, 40, 20, 0.6) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    color: var(--white);
}

.hero-badge {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 20px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    color: var(--white);
    margin-bottom: 20px;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.3);
}

.hero h1 span {
    color: #C8E6C9;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: 40px;
    text-shadow: 1px 1px 5px rgba(0,0,0,0.5);
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-white {
    background-color: var(--white);
    color: var(--color-dark);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.btn-white:hover {
    background-color: var(--color-light);
    transform: translateY(-3px);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--white);
    border: 1px solid var(--color-accent);
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}
.btn-primary:hover {
    background-color: var(--color-dark);
    transform: translateY(-3px);
}

.wave-bottom {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 60px;
    z-index: 10;
}
.wave-bottom svg {
    width: 100%;
    height: 100%;
    fill: var(--color-bg);
}

/* ==================== 
   DESTINATIONS (Cards Grid)
==================== */
.section-padding {
    padding: 80px 0;
}

.filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 20px;
    background: var(--white);
    border: 1px solid #ddd;
    color: var(--text-muted);
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition);
}

.filter-btn.active, .filter-btn:hover {
    background: var(--color-primary);
    color: var(--white);
    border-color: var(--color-primary);
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(76, 175, 80, 0.15);
}

.card-img {
    height: 220px;
    position: relative;
    overflow: hidden;
}

.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card:hover .card-img img {
    transform: scale(1.1);
}

.card-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: rgba(255,255,255,0.9);
    color: var(--color-dark);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.card-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.card-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 15px;
    flex-grow: 1;
}

.card-location {
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.btn-block {
    width: 100%;
    padding: 10px;
    background: var(--color-light);
    color: var(--color-dark);
    border: 1px solid #c8e6c9;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

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

/* ==================== 
   TIMELINE (Routes)
==================== */
.bg-white {
    background-color: var(--white);
    position: relative;
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: 30px;
    border-left: 4px solid var(--color-light);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 20px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -39px;
    top: 0;
    width: 34px;
    height: 34px;
    background: var(--color-primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 4px solid var(--white);
    box-shadow: 0 0 0 4px rgba(129, 199, 132, 0.3);
}

.timeline-content {
    background: var(--color-light);
    padding: 25px;
    border-radius: 15px;
    border: 1px solid #c8e6c9;
    transition: var(--transition);
}

.timeline-content:hover {
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    transform: translateY(-3px);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 10px;
}

.timeline-header h3 {
    font-size: 1.2rem;
    color: var(--color-dark);
}

.timeline-tag {
    background: var(--white);
    font-size: 0.75rem;
    padding: 3px 10px;
    border-radius: 15px;
    color: var(--color-dark);
    border: 1px solid #c8e6c9;
}

/* ==================== 
   MAP SECTION
==================== */
.map-section {
    background: #eef7ee;
    border-top: 1px solid #d4edda;
}

.map-container {
    width: 100%;
    height: 400px;
    background: #ddd;
    border-radius: 20px;
    overflow: hidden;
    position: relative;
}

.map-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
}

.map-overlay {
    position: absolute;
    inset: 0;
    background: rgba(46, 125, 50, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.map-container:hover .map-overlay {
    background: rgba(46, 125, 50, 0.3);
}

.map-box {
    background: rgba(255,255,255,0.9);
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* ==================== 
   FOOTER
==================== */
footer {
    background: var(--color-dark);
    color: #a5d6a7;
    padding: 60px 0 20px;
    border-top: 5px solid var(--color-accent);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 1.5rem;
    color: var(--white);
    font-weight: 700;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-title {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 20px;
    border-bottom: 1px solid #1b5e20;
    padding-bottom: 10px;
    display: inline-block;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-icon {
    width: 35px;
    height: 35px;
    background: #1b5e20;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--white);
    transition: var(--transition);
}

.social-icon:hover {
    background: var(--color-accent);
    color: var(--color-dark);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #1b5e20;
    font-size: 0.85rem;
}

/* ==================== 
   MODAL (Pop-up)
==================== */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(5px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 20px;
}

.modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--white);
    width: 100%;
    max-width: 650px;
    max-height: 90vh;
    border-radius: 20px;
    overflow-y: auto;
    position: relative;
    transform: translateY(30px) scale(0.95);
    transition: all 0.4s ease;
}

.modal-backdrop.active .modal-content {
    transform: translateY(0) scale(1);
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 35px;
    height: 35px;
    background: rgba(0,0,0,0.5);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.close-modal:hover {
    background: var(--color-primary);
}

.modal-header {
    height: 250px;
    position: relative;
}

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

.modal-header-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 20px;
    color: var(--white);
}

.modal-body {
    padding: 30px;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    background: var(--color-light);
    padding: 15px;
    border-radius: 10px;
    margin: 20px 0;
}

.info-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.info-icon {
    width: 40px;
    height: 40px;
    background: var(--white);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* ==================== 
   MEDIA QUERIES (RESPONSIVE)
==================== */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-links {
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        gap: 0;
        box-shadow: 0 10px 10px rgba(0,0,0,0.05);
        transform: translateY(-150%);
        opacity: 0;
        transition: var(--transition);
        z-index: -1;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav-links a {
        display: block;
        padding: 15px 20px;
        border-bottom: 1px solid #f0f0f0;
    }

    .hero h1 {
        font-size: 2.2rem;
    }
    .btn {
        width: 100%;
        justify-content: center;
    }

    .timeline {
        padding-left: 15px;
    }
    .timeline-dot {
        left: -24px;
        width: 28px;
        height: 28px;
        font-size: 0.8rem;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-accent); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-primary); }

/* ==================== 
   STICKERS SLIDER & NAVBAR BTN
==================== */
<!-- ... existing code ... -->
        /* ==================== 
           STICKERS SLIDER & NAVBAR BTN
        ==================== */
        .nav-download-btn {
            background-color: var(--color-light);
            padding: 8px 18px !important;
            border-radius: 20px;
            color: var(--color-dark) !important;
            border: 1px solid var(--color-accent);
        }
        .nav-download-btn:hover {
            background-color: var(--color-primary) !important;
            color: var(--white) !important;
            transform: translateY(-2px);
        }

        .slider-container {
            position: relative;
            display: flex;
            align-items: center;
            margin-top: 30px;
            /* เพิ่มเพื่อให้ปุ่มเลื่อนอยู่พอดี */
            padding: 0 10px; 
        }

        .sticker-slider {
            display: flex;
            overflow-x: auto;
            scroll-behavior: smooth;
            gap: 20px;
            padding: 15px 5px;
            scroll-snap-type: x mandatory;
            -ms-overflow-style: none; /* ซ่อน Scrollbar (IE/Edge) */
            scrollbar-width: none; /* ซ่อน Scrollbar (Firefox) */
            width: 100%;
        }
        .sticker-slider::-webkit-scrollbar {
            display: none; /* ซ่อน Scrollbar (Chrome/Safari) */
        }

        .sticker-item {
            /* เปลี่ยนจากการล็อก min-width เป็นการใช้ calc เพื่อแบ่งสัดส่วน */
            flex: 0 0 calc((100% / 3) - (40px / 3)); /* หน้าจอใหญ่ แสดง 3 รูป (หักลบระยะห่าง gap) */
            background: var(--white);
            border-radius: 15px;
            padding: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            scroll-snap-align: start;
            text-align: center;
            border: 1px solid var(--color-light);
            transition: var(--transition);
        }
        .sticker-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(76, 175, 80, 0.15);
        }

        .sticker-item img {
            width: 100%;           /* ยืดเต็มกล่อง */
            height: auto;          /* ให้ความสูงปรับตามอัตโนมัติ */
            aspect-ratio: 1 / 1;   /* บังคับเป็นจัตุรัส 1:1 */
            object-fit: cover;     /* ครอปส่วนเกินออก ไม่ให้รูปเบี้ยว */
            border-radius: 10px;
            margin-bottom: 15px;
            border: 3px solid var(--color-bg);
        }

        .btn-download {
            background: var(--color-primary);
            color: var(--white);
            border: none;
            padding: 8px;
            text-decoration: none;
            display: block;
        }
        .btn-download:hover {
            background: var(--color-dark);
            color: var(--white);
        }

        .slider-btn {
            background: var(--white);
            color: var(--color-dark);
            border: 1px solid #ddd;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            position: absolute;
            z-index: 10;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            transition: var(--transition);
        }
        .slider-btn.prev { left: -10px; }
        .slider-btn.next { right: -10px; }
        .slider-btn:hover { background: var(--color-light); color: var(--color-primary); border-color: var(--color-primary); }

        /* ==================== 
           FOOTER
        ==================== */
<!-- ... existing code ... -->
```eof

และเพื่อให้มัน Responsive ในหน้าจอมือถือและแท็บเล็ต ให้คุณเลื่อนลงไปแก้ไขในส่วน `@media (max-width: 768px)` ของ CSS (อยู่ด้านล่างสุดก่อนเปิดแท็ก HTML ใหม่) โดยเพิ่ม/แก้ไขโค้ดสำหรับ `.sticker-item` แบบนี้ครับ:

```html:MaeSuai_Travel_Web/index.html
<!-- ... existing code ... -->
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
<!-- ... existing code ... -->
            .info-grid {
                grid-template-columns: 1fr;
            }
            
            .slider-btn.prev { left: -5px; }
            .slider-btn.next { right: -5px; }
            
            /* ปรับหน้าจอมือถือให้แสดงทีละ 2 รูป (หรือถ้าอยากให้เต็มจอเลย เปลี่ยนเป็น flex: 0 0 100%; ) */
            .sticker-item { 
                flex: 0 0 calc((100% / 2) - 10px); 
            }
            
            .nav-download-btn { width: fit-content; margin: 10px 20px; }
        }

        /* สำหรับจอมือถือขนาดเล็กมาก (ต่ำกว่า 480px) */
        @media (max-width: 480px) {
            .sticker-item {
                 /* หน้าจอมือถือเล็กๆ จะแสดง 1 รูปใหญ่ๆ พร้อมขอบนิดหน่อย */
                flex: 0 0 85%; 
            }
        }

        ::-webkit-scrollbar { width: 8px; }