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

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

html{
    scroll-behavior:smooth;
}

body{

    font-family:'Be Vietnam Pro',sans-serif;

    background:#f7fbff;

    color:#222;

    line-height:1.7;

    overflow-x:hidden;

}

img{

    max-width:100%;

    display:block;

}

a{

    text-decoration:none;

}

ul{

    list-style:none;

}

.container{

    width:1200px;

    max-width:92%;

    margin:auto;

}

/*==================================================
COLOR
==================================================*/

:root{

--primary:#0A6BFF;

--secondary:#0054d1;

--light:#f7fbff;

--white:#ffffff;

--text:#222;

--gray:#666;

--shadow:0 20px 60px rgba(0,0,0,.08);

--radius:18px;

--transition:.35s;

}

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

.btn-primary{

display:inline-flex;

align-items:center;

justify-content:center;

padding:16px 34px;

background:linear-gradient(135deg,var(--primary),#49a2ff);

color:#fff;

font-weight:700;

border-radius:60px;

transition:.35s;

box-shadow:0 15px 40px rgba(10,107,255,.25);

}

.btn-primary:hover{

transform:translateY(-4px);

box-shadow:0 20px 45px rgba(10,107,255,.35);

}

.btn-outline{

display:inline-flex;

padding:16px 34px;

border:2px solid var(--primary);

color:var(--primary);

border-radius:60px;

font-weight:700;

transition:.3s;

}

.btn-outline:hover{

background:var(--primary);

color:#fff;

}

/*==================================================
HEADER
==================================================*/

header{

position:fixed;

top:0;

left:0;

width:100%;

z-index:999;

backdrop-filter:blur(20px);

background:rgba(255,255,255,.82);

border-bottom:1px solid rgba(255,255,255,.6);

transition:.35s;

}

header .container{

height:88px;

display:flex;

align-items:center;

justify-content:space-between;

}

.logo img{

height:80px;
padding: 10px;
}

nav ul{

display:flex;

gap:35px;

}

nav a{

font-weight:600;

color:#222;

position:relative;

}

nav a:after{

content:"";

position:absolute;

bottom:-8px;

left:0;

width:0;

height:3px;

background:var(--primary);

transition:.3s;

}

nav a:hover:after{

width:100%;

}

.header-right{

display:flex;

align-items:center;

gap:18px;

}

.phone{

font-weight:700;

color:var(--primary);

}

.phone i{

margin-right:8px;

}

.mobile-menu{

display:none;

font-size:28px;

cursor:pointer;

}

/*==================================================
HERO
==================================================*/

.hero{

padding:170px 0 100px;

background:

linear-gradient(135deg,#eef7ff,#ffffff);

}

.hero-grid{

display:grid;

grid-template-columns:1fr 1fr;

align-items:center;

gap:80px;

}

.tag{

display:inline-block;

padding:8px 18px;

background:#dcebff;

color:var(--primary);

border-radius:30px;

font-weight:700;

margin-bottom:25px;

}

.hero h1{

font-size:60px;

line-height:1.1;

font-weight:800;

margin-bottom:30px;

}

.hero h1 span{

display:block;

color:var(--primary);

margin-top:10px;

}

.hero p{

font-size:18px;

color:#666;

margin-bottom:35px;

}

.hero-btn{

display:flex;

gap:18px;

margin-bottom:55px;

}

.hero-number{

display:flex;

gap:50px;

}

.hero-number h2{

font-size:38px;

color:var(--primary);

}

.hero-number p{

margin:0;

font-size:15px;

}

.hero-image{

position:relative;

}

.hero-image img{

width:100%;

border-radius:30px;

box-shadow:var(--shadow);

}

.hero-image:before{

content:"";

position:absolute;

width:220px;

height:220px;

background:#d9ebff;

border-radius:50%;

left:-60px;

top:-50px;

z-index:-1;

}

.hero-image:after{

content:"";

position:absolute;

width:170px;

height:170px;

background:#8fc0ff;

border-radius:50%;

right:-40px;

bottom:-40px;

z-index:-1;

}

/*==================================================
SECTION TITLE
==================================================*/

section{

padding:100px 0;

}

.section-title{

text-align:center;

margin-bottom:90px;

}

.section-title span{

display:inline-block;

padding:8px 18px;

background:#e7f2ff;

border-radius:40px;

font-weight:700;

color:var(--primary);

margin-bottom:18px;

}

.section-title h2{

font-size:42px;

margin-bottom:18px;

}

.section-title p{

width:760px;

max-width:100%;

margin:auto;

color:#666;

}

/*==================================================
FEATURE
==================================================*/

.feature{

    background:#ffffff;

}

.feature-grid{

    display:grid;

    grid-template-columns:repeat(3,1fr);

    gap:30px;

}

.feature-box{

    background:#fff;

    padding:40px 30px;

    border-radius:20px;

    text-align:center;

    transition:.35s;

    box-shadow:0 12px 35px rgba(0,0,0,.06);

    border:1px solid #eef4fb;

}

.feature-box:hover{

    transform:translateY(-10px);

    box-shadow:0 20px 50px rgba(0,0,0,.12);

}

.feature-box i{

    width:78px;

    height:78px;

    line-height:78px;

    border-radius:50%;

    font-size:32px;

    color:#fff;

    background:linear-gradient(135deg,var(--primary),#57b2ff);

    margin-bottom:22px;

}

.feature-box h3{

    font-size:24px;

    margin-bottom:15px;

}

.feature-box p{

    color:var(--gray);

}

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

.about{

    background:linear-gradient(180deg,#ffffff,#f6fbff);

}

.about-grid{

    display:grid;

    grid-template-columns:1fr 1fr;

    gap:70px;

    align-items:center;

}

.about-image{

    position:relative;

}

.about-image img{

    border-radius:25px;

    box-shadow:var(--shadow);

}

.about-image::before{

    content:"";

    position:absolute;

    width:180px;

    height:180px;

    background:#d8ebff;

    border-radius:50%;

    left:-50px;

    bottom:-50px;

    z-index:-1;

}

.about-content span{

    display:inline-block;

    color:var(--primary);

    font-weight:700;

    margin-bottom:15px;

}

.about-content h2{

    font-size:42px;

    margin-bottom:25px;

    line-height:1.3;

}

.about-content p{

    color:#666;

    margin-bottom:25px;

}

.about-content ul{

    display:grid;

    grid-template-columns:repeat(2,1fr);

    gap:15px;

    margin-bottom:40px;

}

.about-content li{

    background:#fff;

    padding:15px 18px;

    border-radius:12px;

    box-shadow:0 8px 20px rgba(0,0,0,.05);

    font-weight:600;

}

/*==================================================
APPLICATION
==================================================*/

.application{

    background:#f7fbff;

}

.application-grid{

    display:grid;

    grid-template-columns:repeat(4,1fr);

    gap:30px;

}

.app-card{

    overflow:hidden;

    border-radius:20px;

    background:#fff;

    transition:.35s;

    box-shadow:0 10px 30px rgba(0,0,0,.07);

}

.app-card:hover{

    transform:translateY(-10px);

    box-shadow:0 18px 45px rgba(0,0,0,.12);

}

.app-card img{

    width:100%;

    height:240px;

    object-fit:cover;

    transition:.5s;

}

.app-card:hover img{

    transform:scale(1.08);

}

.app-content{

    padding:28px;

}

.app-content h3{

    margin-bottom:15px;

    font-size:24px;

}

.app-content p{

    color:#666;

}

/*==================================================
COMMON CARD EFFECT
==================================================*/

.card-hover{

    transition:.35s;

}

.card-hover:hover{

    transform:translateY(-10px);

    box-shadow:0 18px 45px rgba(0,0,0,.12);

}

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

@keyframes float{

    0%{

        transform:translateY(0);

    }

    50%{

        transform:translateY(-12px);

    }

    100%{

        transform:translateY(0);

    }

}

.hero-image{

    animation:float 5s ease-in-out infinite;

}

.fade-up{

    animation:fadeUp .8s ease;

}

@keyframes fadeUp{

    from{

        opacity:0;

        transform:translateY(40px);

    }

    to{

        opacity:1;

        transform:translateY(0);

    }

}

/*==================================================
SPACING HELPERS
==================================================*/

.mt-30{

    margin-top:30px;

}

.mt-50{

    margin-top:50px;

}

.mb-30{

    margin-bottom:30px;

}

.mb-50{

    margin-bottom:50px;

}

.text-center{

    text-align:center;

}

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

.products{
    background:#fff;
}

.product-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:30px;
}

.product-card{
    background:#fff;
    border-radius:22px;
    overflow:hidden;
    box-shadow:0 15px 40px rgba(0,0,0,.08);
    transition:.35s;
}

.product-card:hover{
    transform:translateY(-10px);
    box-shadow:0 22px 55px rgba(0,0,0,.12);
}

.product-card img{
    width:100%;
    height:280px;
    object-fit:cover;
    transition:.4s;
}

.product-card:hover img{
    transform:scale(1.08);
}

.product-info{
    padding:30px;
}

.product-info h3{
    font-size:26px;
    margin-bottom:15px;
}

.product-info p{
    color:#666;
    margin-bottom:25px;
}

.product-info a{
    color:var(--primary);
    font-weight:700;
}

/*==================================================
SPECIFICATION
==================================================*/

.specification{
    background:#f7fbff;
}

.spec-table{
    background:#fff;
    border-radius:20px;
    overflow:hidden;
    box-shadow:var(--shadow);
}

.spec-table table{
    width:100%;
    border-collapse:collapse;
}

.spec-table th{
    background:linear-gradient(135deg,var(--primary),#45a1ff);
    color:#fff;
    padding:20px;
    text-align:left;
    font-size:18px;
}

.spec-table td{
    padding:18px 20px;
    border-bottom:1px solid #edf2f7;
}

.spec-table tbody tr:hover{
    background:#f4f9ff;
}

.spec-table tbody tr:last-child td{
    border:none;
}

/*==================================================
CTA
==================================================*/

.cta{
    padding:80px 0;
}

.cta-box{
    background:linear-gradient(135deg,#0A6BFF,#49a2ff);
    color:#fff;
    padding:60px;
    border-radius:30px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:40px;
}

.cta-box h2{
    font-size:40px;
    margin-bottom:15px;
}

.cta-box p{
    opacity:.95;
}

.cta-box .btn-primary{
    background:#fff;
    color:var(--primary);
    box-shadow:none;
}

.cta-box .btn-primary:hover{
    transform:translateY(-5px);
}

/*==================================================
TESTIMONIAL
==================================================*/

.testimonial{
    background:#fff;
}

.testimonial-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:30px;
}

.testimonial-item{
    padding:35px;
    background:#fff;
    border-radius:20px;
    box-shadow:0 12px 35px rgba(0,0,0,.08);
    transition:.35s;
}

.testimonial-item:hover{
    transform:translateY(-8px);
}

.star{
    color:#ffc107;
    font-size:22px;
    margin-bottom:20px;
}

.testimonial-item p{
    color:#666;
    margin-bottom:20px;
}

.testimonial-item h4{
    color:var(--primary);
}

/*==================================================
FAQ
==================================================*/

.faq{
    background:#f7fbff;
}

.faq-item{
    background:#fff;
    border-radius:18px;
    margin-bottom:20px;
    overflow:hidden;
    box-shadow:0 10px 25px rgba(0,0,0,.05);
}

.faq-title{
    width:100%;
    padding:24px 30px;
    border:none;
    background:#fff;
    display:flex;
    justify-content:space-between;
    align-items:center;
    cursor:pointer;
    font-size:18px;
    font-weight:700;
}

.faq-content{
    display:none;
    padding:0 30px 25px;
    color:#666;
}


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

.contact{
    background:#fff;
}

.contact-wrapper{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:60px;
    align-items:center;
}

.contact-info h2{
    font-size:42px;
    margin:20px 0;
}

.contact-info p{
    color:#666;
    margin-bottom:30px;
}

.contact-info ul li{
    margin-bottom:18px;
    font-size:18px;
}

.contact-info i{
    width:35px;
    color:var(--primary);
}

.contact-form{
    background:#fff;
    padding:40px;
    border-radius:24px;
    box-shadow:0 15px 45px rgba(0,0,0,.08);
}

.contact-form input,
.contact-form textarea{
    width:100%;
    padding:16px 20px;
    border:1px solid #dfe8f2;
    border-radius:12px;
    margin-bottom:20px;
    font-family:inherit;
    outline:none;
    transition:.3s;
}

.contact-form input:focus,
.contact-form textarea:focus{
    border-color:var(--primary);
}

.contact-form button{
    width:100%;
    padding:18px;
    border:none;
    border-radius:60px;
    background:linear-gradient(135deg,var(--primary),#4ea8ff);
    color:#fff;
    font-size:17px;
    font-weight:700;
    cursor:pointer;
}

/*==================================================
FOOTER
==================================================*/

footer{
    background:linear-gradient(135deg,var(--primary),#399fff);
    color:#fff;
    padding:80px 0 25px;
}

.footer-grid{
    display:grid;
    grid-template-columns:2fr 1fr 1fr 1fr;
    gap:50px;
}

.footer-logo{
    width: 300px;
    /* margin-bottom:20px; */
}

footer h3{
    margin-bottom:20px;
}

footer ul li{
    margin-bottom:12px;
    color:#d5def0;
}

.social{
    display:flex;
    gap:15px;
}

.social a{
    width:45px;
    height:45px;
    display:flex;
    justify-content:center;
    align-items:center;
    border-radius:50%;
    background:rgba(255,255,255,.1);
    color:#fff;
    transition:.3s;
}

.social a:hover{
    background:var(--primary);
}

.copyright{
    border-top:1px solid rgba(255,255,255,.15);
    margin-top:50px;
    padding-top:20px;
    text-align:center;
    color:#b9c6da;
}

/*==================================================
FLOATING BUTTONS
==================================================*/

.floating-call,
.floating-zalo,
.back-top{
    position:fixed;
    right:25px;
    width:58px;
    height:58px;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    font-weight:700;
    z-index:999;
    box-shadow:0 12px 35px rgba(0,0,0,.18);
}

.floating-call{
    bottom:180px;
    background:#0A6BFF;
}

.floating-zalo{
    bottom:110px;
    background:#0088ff;
}

.back-top{
    bottom:40px;
    background:#222;
}

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

nav a.active::after{
    width:100%;
}

.back-top{
    opacity:0;
    visibility:hidden;
    transition:.3s;
}


/*==================================================
SPECIFICATION TAB
==================================================*/

.specification{
    background:#f8fbff;
    padding:100px 0;
}

/* .spec-wrapper{
    position: relative;
    align-items: flex-start;
    display:flex;
    gap:40px;
    margin-top:60px;
} */

.spec-wrapper{
    display: flex;
    align-items: flex-start;
    margin-top:60px;
    gap: 50px;
}

/*============================
LEFT MENU
============================*/

/* .spec-menu{
    position: sticky;
    display:flex;
    align-self: flex-start;
    flex-direction:column;
    gap:18px;
} */



.spec-menu{
    gap: 100px;
    position: sticky;
    top: 100px;     
}

.spec-content{
    flex: 1;
    min-width: 0;
}

.spec-item{

    display:flex;
    align-items:center;

    margin: 10px;

    gap:18px;

    padding:10px;

    background:#fff;

    border-radius:18px;

    cursor:pointer;

    transition:.35s;

    border:2px solid transparent;

    box-shadow:0 10px 30px rgba(0,0,0,.05);

}

.spec-item span{

    width:55px;
    height:55px;

    border-radius:50%;

    background:#eef5ff;

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

    font-size:18px;
    font-weight:700;

    color:#0A6BFF;

    flex-shrink:0;

}

.spec-item h4{

    font-size:20px;
    margin-bottom:5px;

}

.spec-item p{

    color:#777;
    font-size:14px;

}

.spec-item:hover{

    transform:translateX(8px);

}

.spec-item.active{

    border-color:#0A6BFF;

    background:linear-gradient(135deg,#0A6BFF,#3f97ff);

    color:#fff;

}

.spec-item.active span{

    background:#fff;

}

.spec-item.active p{

    color:#eef4ff;

}

/*============================
RIGHT CONTENT
============================*/

.spec-content{

    background:#fff;

    border-radius:24px;

    overflow:hidden;

    box-shadow:0 20px 60px rgba(0,0,0,.08);

}

/*============================
PROGRESS BAR
============================*/

.progress-bar{

    height:5px;

    background:#e9eef6;

}

.progress{

    width:0;

    height:100%;

    background:#0A6BFF;

}

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

.spec-image{

    padding:40px;

    background:#f8fbff;

}

.spec-image img{

    width:100%;

    max-width:650px;

    margin:auto;

    display:block;

    transition:.4s;

}

/*============================
INFO
============================*/

.spec-info{

    padding:40px;

}

.spec-info h3{

    font-size:34px;

    margin-bottom:30px;

}

/*============================
TABLE
============================*/

.spec-info table{

    width:100%;

    border-collapse:collapse;

    margin-bottom:35px;

}

.spec-info td{

    padding:16px 18px;

    border-bottom:1px solid #edf2f7;

}

.spec-info td:first-child{

    width:220px;

    font-weight:700;

    background:#f8fbff;

}

.spec-info tr:hover{

    background:#f4f8ff;

}

/*============================
FEATURE
============================*/

.spec-feature{

    display:grid;

    grid-template-columns:repeat(2,1fr);

    gap:15px;

    margin-bottom:35px;

}

.spec-feature div{

    background:#eef6ff;

    padding:16px;

    border-radius:12px;

    font-weight:600;

}

.spec-feature i{

    color:#0A6BFF;

    margin-right:10px;

}

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

.spec-btn{

    display:flex;

    gap:20px;

}

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

.spec-image img{

    animation:fadeImage .5s;

}

@keyframes fadeImage{

from{

    opacity:0;

    transform:scale(.95);

}

to{

    opacity:1;

    transform:scale(1);

}

}

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

@media(max-width:992px){

.spec-wrapper{

grid-template-columns:1fr;

}

.spec-menu{

display:grid;

grid-template-columns:repeat(2,1fr);

}

}

@media(max-width:768px){

.spec-menu{

grid-template-columns:1fr;

}

.spec-btn{

flex-direction:column;

}

.spec-feature{

grid-template-columns:1fr;

}

.spec-info td:first-child{

width:150px;

}

}