/* ===================== RESET ===================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}



/* ===================== GLOBAL ===================== */

section {
    padding: 80px 120px;
}

h1 {
    font-size: 48px;
}

h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

h3 {
    margin-bottom: 8px;
}

p {
    line-height: 1.7;
    margin-bottom: 12px;
}

ul {
    padding-left: 20px;
    margin-top: 10px;
}

li {
    margin-bottom: 8px;
    line-height: 1.6;
}



/* ===================== BUTTON ===================== */

.btn {
    display: inline-block;
    padding: 12px 26px;
    border-radius: 8px;
    font-weight: bold;
    text-decoration: none;
    transition: 0.3s;
}

.primary {
    background: #007bff;
    color: #fff;
}

.primary:hover {
    background: #0056d2;
    transform: translateY(-2px);
}

.secondary {
    border: 2px solid #007bff;
    color: #007bff;
    background: #fff;
}

.secondary:hover {
    background: #007bff;
    color: #fff;
}



/* ===================== BANNER ===================== */

.banner {
    position: relative;
    height: 600px;
    background: url('images/banner.png') center / cover no-repeat;

    display: flex;
    flex-direction: column;
    justify-content: center;

    padding-left: 80px;
    color: #fff;
}

.banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.3);
}

.banner * {
    position: relative;
    z-index: 1;
}


/* ===================== ABOUT ===================== */

.about {
    background: #f5cfcf;
}

.about-grid {
    display: flex;
    gap: 20px;
}

.card {
    flex: 1;
    background: #dcddee;
    padding: 20px;
    border-radius: 10px;
}



/* ===================== FOUNDER ===================== */

.founder {
    background: #f5cfcf;
}

.founder-container {
    display: flex;
    gap: 40px;

    background: #f0f0f0;
    padding: 40px;
    border-radius: 15px;

    align-items: center;
}

.founder-image img {
    width: 100%;
    max-width: 320px;
    max-height: 320px;
    object-fit: contain;

    margin: auto;
    border-radius: 12px;
}



/* ===================== VISION ===================== */

.vision {
    background: #f5cfcf;
}

.vision-container {
    background: #eee;
    padding: 40px;
    border-radius: 20px;
}

.vision-grid {
    display: flex;
    gap: 30px;
}

.vision-card {
    flex: 1;
    padding: 25px;
    border-radius: 15px;
}

.left {
    background: #f29c7f;
}

.right {
    background: #e7b6ad;
}



/* ===================== CORE ===================== */

.core {
    background: #eee;
}

.core-grid {
    display: flex;
    gap: 40px;
}

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

.icon {
    width: 60px;
    display: flex;
    justify-content: center;
}

.icon img {
    max-width: 45px;
    max-height: 45px;
    object-fit: contain;
}


/* ===================== PRODUCTS ===================== */

.products {
    background: #f7f7f7;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.product-card {
    background: #fff;
    padding: 25px;
    border-radius: 16px;

    transition: 0.3s;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}

.product-card:hover {
    transform: translateY(-6px);
}

.product-card img {
    height: 220px;
    object-fit: contain;

    background: #f3f3f3;
    padding: 10px;
    border-radius: 12px;

    margin-bottom: 15px;
}



/* ===================== SOLUTION ===================== */

.solution {
    background: #f5e8a3;
}

.solution-box {
    display: flex;
    gap: 40px;

    background: #efe3a2;
    padding: 30px;
    border-radius: 15px;
}

.solution-image img {
    width: 100%;
    max-height: 350px;
    object-fit: cover;
    border-radius: 16px;
}



/* ===================== PROCESS ===================== */

.process {
    background: #f5e8a3;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.process-bar {
    height: 80px;
    background: #b9b8c9;

    display: flex;
    align-items: center;
    justify-content: center;
}

.process-bar img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}



/* ===================== PARTNER ===================== */

.partner {
    background: #f7f7f7;
}

.partner-container {
    display: flex;
    gap: 50px;
    align-items: flex-start;
}

.partner-list {
    flex: 1;

    display: flex;
    flex-direction: column;
    gap: 20px;
}

.partner-item {
    background: #fff;
    padding: 20px;

    border-left: 6px solid #5b5bd6;
    border-radius: 12px;
}

.partner-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.partner-image img {
    width: 100%;
    max-height: 500px;
    object-fit: contain;
    border-radius: 20px;
}



/* ===================== CONTACT ===================== */

.contact {
    background: #e7b8b0;
}

.contact-box {
    display: flex;
    gap: 50px;

    background: #f5f5f5;
    padding: 40px;
    border-radius: 20px;
}



/* ===================== FLOAT ===================== */

.zalo-btn,
.tiktok-btn,
.facebook-btn {
    position: fixed;
    right: 20px;
    width: 50px;
    z-index: 999;
}

.zalo-btn {
    bottom: 90px;
}

.facebook-btn {
    bottom: 150px;
}

.tiktok-btn {
    bottom: 210px;
}

/* ===================== BACK TO TOP (BLACK STYLE) ===================== */

#backToTop {
    position: fixed;
    right: 20px;
    bottom: 20px;

    width: 44px;
    height: 44px;

    border-radius: 50%;

    background: #000;
    color: #fff;

    font-size: 18px;

    display: none;
    cursor: pointer;

    z-index: 999;

    border: none;

    transition: 0.3s;
}

#backToTop:hover {
    transform: scale(1.1);
    background: #222;
}



/* ===================== SCROLL ===================== */

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: 0.8s;
}

.reveal.show {
    opacity: 1;
    transform: none;
}



/* ===================== RESPONSIVE ===================== */

@media (max-width: 768px) {

    section {
        padding: 50px 20px;
    }

    h1 {
        font-size: 28px;
    }

    h2 {
        font-size: 24px;
    }

    .banner {
        height: auto;
        padding: 40px 20px;
    }

    .about-grid,
    .vision-grid,
    .core-grid,
    .solution-box,
    .founder-container,
    .partner-container,
    .contact-box {
        flex-direction: column;
    }

    .product-grid,
    .process-grid {
        grid-template-columns: 1fr;
    }

    .partner-image img {
        max-height: none;
        border-radius: 16px;
    }

    .founder-image img {
        max-width: 220px;
        max-height: 220px;
    }

    .solution-image img {
        max-height: 220px;
    }

    .btn {
        display: block;
        text-align: center;
        margin-bottom: 10px;
    }

    .zalo-btn,
    .tiktok-btn,
    .facebook-btn {
        width: 45px;
    }

    #backToTop {
        width: 40px;
        height: 40px;
    }
}



/* ===================== FIX KHOẢNG CÁCH PROCESS ===================== */

.process-item {
    margin-bottom: 25px;
}

.process-item h3 {
    margin-top: 12px;
    margin-bottom: 8px;
}

.process-item p {
    margin-bottom: 0;
    line-height: 1.6;
}



/* ===================== FIX SPACING CONTACT ===================== */

.contact-left p {
    margin-bottom: 12px;
}

.contact-left h3 {
    margin-bottom: 10px;
}

.contact-left hr {
    margin: 20px 0;
}

.contact-buttons {
    margin-top: 20px;
}

.contact-buttons .btn {
    margin-bottom: 10px;
}

.contact-right img {
    margin-top: 20px;
    margin-bottom: 15px;
    border-radius: 12px;
}

.contact-card ul {
    margin-top: 10px;
}

.contact-card li {
    margin-bottom: 8px;
    line-height: 1.6;
}




/* ===================== FOUNDER CARD ===================== */

.founder {
    padding: 80px 120px;
    background: #e2bfb7;
}

.founder-container {
    background: #f5f5f5;
    border-radius: 20px;
    padding: 50px 60px;

    display: flex;
    align-items: center;
    gap: 60px;

    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.founder-text {
    flex: 1;
    max-width: 600px;
}

.founder-text h2 {
    font-size: 38px;
    margin-bottom: 20px;
}

.founder-text p {
    line-height: 1.7;
    margin-bottom: 15px;
}

.founder-text blockquote {
    margin: 25px 0;
    padding-left: 18px;
    border-left: 4px solid #2b5bd7;
    font-weight: bold;
}

.founder-text h4 {
    margin-top: 10px;
    font-weight: bold;
}

.founder-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.founder-image img {
    max-width: 320px;
    max-height: 320px;
    object-fit: contain;
}



/* ===================== MOBILE FOUNDER ===================== */

@media (max-width: 768px) {

    .founder {
        padding: 50px 20px;
    }

    .founder-container {
        flex-direction: column;
        padding: 30px 20px;
        gap: 30px;
    }

    .founder-text {
        max-width: 100%;
    }

    .founder-image img {
        max-width: 220px;
    }
}



/* ===================== SCROLL SMOOTH ===================== */

html {
    scroll-behavior: smooth;
}



/* ===================== FIX ABOUT DESC ===================== */

.about-desc {
    margin-top: 25px;
    line-height: 1.7;
}



/* ===================== FIX CONTACT DESKTOP ===================== */

.contact-box {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
}

.contact-left {
    flex: 1;
}

.contact-right {
    flex: 1;
}

.contact-right img {
    width: 100%;
    max-width: 100%;
}



/* ===================== MOBILE FIX FULL ===================== */

@media (max-width: 768px) {

    section {
        padding: 40px 16px;
    }

    .banner {
        padding: 40px 16px;
        height: auto;
        text-align: left;
    }

    .about-grid {
        flex-direction: column;
    }

    .founder-container {
        flex-direction: column;
        padding: 25px;
        gap: 25px;
    }

    .vision-grid {
        flex-direction: column;
    }

    .core-grid {
        flex-direction: column;
    }

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

    .solution-box {
        flex-direction: column;
    }

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

    .partner-container {
        flex-direction: column;
    }

    .contact-box {
        flex-direction: column;
        gap: 25px;
    }

    img {
        width: 100%;
        height: auto;
    }

    .btn {
        display: block;
        width: 100%;
        text-align: center;
    }

    .zalo-btn,
    .tiktok-btn,
    .facebook-btn {
        right: 12px;
    }

    #backToTop {
        right: 12px;
        bottom: 12px;
    }
}



/* ===================== newcode ===================== */



/* ===================== PRODUCT CARD ===================== */

.product-item {
    background: #fff;
    border-radius: 20px;

    padding: 25px;
    margin-bottom: 50px;

    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    transition: 0.3s;
}

.product-item:hover {
    transform: translateY(-5px);
}

.product-item h3 {
    margin-top: 15px;
    margin-bottom: 10px;
}

.product-item ul {
    margin-top: 10px;
}



/* ===================== MOBILE ===================== */

@media (max-width: 768px) {

    .product-item {
        padding: 18px;
        margin-bottom: 30px;
    }
}



/* ===================== SLIDER ===================== */

.slider {
    position: relative;
    overflow: hidden;
    margin-bottom: 20px;
}



/* ===================== TRACK ===================== */

.slider-track {
    display: flex;
    gap: 20px;

    transition: transform 0.4s ease;

    touch-action: pan-y;
    cursor: grab;
}

.slider-track:active {
    cursor: grabbing;
}



/* ===================== SLIDE ===================== */

.slide {
    min-width: calc((100% - 40px) / 3);

    display: flex;
    align-items: center;
    justify-content: center;

    height: 240px;

    border-radius: 12px;
}



/* ===================== IMAGE + VIDEO ===================== */

.slide img,
.slide video {
    width: 100%;
    height: 100%;

    object-fit: contain;
    border-radius: 20px;

    user-select: none;
    -webkit-user-drag: none;
}



/* ===================== MOBILE ===================== */

@media (max-width: 768px) {

    .slider-track {
        gap: 10px;
    }

    .slide {
        min-width: 100%;
        height: 200px;
    }
}



/* ===================== BUTTON ===================== */

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);

    background: rgba(255,255,255,0);
    backdrop-filter: blur(6px);

    border: 1px solid rgba(255,255,255,0.3);

    font-size: 18px;
    padding: 10px 14px;

    cursor: pointer;
    z-index: 2;

    border-radius: 50%;
    color: #000;

    transition: 0.3s;
}

.slider-btn:hover {
    background: rgba(255,255,255,0.5);
    transform: translateY(-50%) scale(1.1);
}

.prev {
    left: 10px;
}

.next {
    right: 10px;
}



/* ===================== DOTS ===================== */

.dots {
    text-align: center;
    margin-top: 10px;
}

.dots span {
    display: inline-block;
    width: 8px;
    height: 8px;

    background: #ccc;
    margin: 0 4px;
    border-radius: 50%;
}

.dots .active {
    background: #000;
}



/* ===================== FIX SELECT ===================== */

.slider,
.slider * {
    user-select: none;
    -webkit-user-select: none;
}



/* ===================== ZOOM ===================== */

#zoomOverlay {
    position: fixed;
    inset: 0;

    background: rgba(0,0,0,0.85);

    display: flex;
    align-items: center;
    justify-content: center;

    opacity: 0;
    visibility: hidden;

    transition: 0.3s;
    z-index: 9999;
}

#zoomOverlay.show {
    opacity: 1;
    visibility: visible;
}

#zoomOverlay img {
    max-width: 90%;
    max-height: 90%;

    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);

    transform: scale(0.8);
    transition: 0.3s;
}

#zoomOverlay.show img {
    transform: scale(1);
}



/* ===================== PERFORMANCE BOOST ===================== */

.slider-track {
    will-change: transform;
    transform: translate3d(0,0,0);
}

.slide {
    will-change: transform;
}

.slide img,
.slide video {
    transform: translateZ(0);
    backface-visibility: hidden;
}






/* ===================== FLOAT BUTTON ===================== */

.zalo-btn,
.facebook-btn,
.tiktok-btn {
    position: fixed;
    right: 20px;
    width: 50px;
    z-index: 999;

    animation: floatIcon 2.5s infinite ease-in-out;
}

/* vị trí từng nút */
.zalo-btn { bottom: 90px; }
.facebook-btn { bottom: 150px; }
.tiktok-btn { bottom: 210px; }


/* ===================== IMAGE STYLE ===================== */

.zalo-btn img,
.facebook-btn img,
.tiktok-btn img {
    width: 100%;
    border-radius: 50%;
    transition: 0.3s;
}


/* ===================== HOVER ===================== */

.zalo-btn:hover img,
.facebook-btn:hover img,
.tiktok-btn:hover img {
    transform: scale(1.15);
}

/* glow riêng từng app */
.zalo-btn:hover img {
    box-shadow: 0 0 15px #0068ff;
}

.facebook-btn:hover img {
    box-shadow: 0 0 15px #0084ff;
}

.tiktok-btn:hover img {
    box-shadow: 0 0 15px #000;
}


/* ===================== CLICK EFFECT ===================== */

.zalo-btn:active img,
.facebook-btn:active img,
.tiktok-btn:active img {
    transform: scale(0.95);
}


/* ===================== FLOAT ANIMATION ===================== */

@keyframes floatIcon {
    0% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
    100% { transform: translateY(0); }
}