/* ===================================================
   SENA LLC - Corporate Mining Website
   PART 2A
=================================================== */

/* ---------- Google Font ---------- */

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

:root{

    --gold:#c9a227;
    --gold-light:#d8b54b;

    --dark:#111111;
    --dark-2:#1c1c1c;

    --white:#ffffff;
    --link:#111111;

    --gray:#666666;
    --gray-light:#efefef;

    --shadow:0 15px 45px rgba(0,0,0,.12);

    --radius:16px;

    --transition:.35s ease;

    --max-width:1200px;

}

html{

    scroll-behavior:smooth;

}

body{

    font-family:"Manrope",sans-serif;

    background:#fff;

    color:var(--dark);

    line-height:1.8;

    overflow-x:hidden;

}

.baigal-hero{

    position:relative;

    min-height:100vh;

    background-image:url("bg baigal.jpg");

    background-size:cover;

    background-position:center;

    display:flex;

    align-items:center;

}

.baigal-overlay{

    position:absolute;

    inset:0;

    background:rgba(255, 255, 255, 0.716);

}

.baigal-hero .container{

    position:relative;

    z-index:1;

}

.ayulgui-hero{

    position:relative;

    min-height:100vh;

    background-image:url("ayulgui.jpg");

    background-size:cover;

    background-position:center;

    display:flex;

    align-items:center;

}

.ayulgui-overlay{

    position:absolute;

    inset:0;

    background:rgba(255, 255, 255, 0.718);

}

.ayulgui-hero .container{

    position:relative;

    z-index:1;

}

.hab-hero,
.niigem-hero{

    position:relative;

    min-height:100vh;

    background-size:cover;

    background-position:center;

    display:flex;

    align-items:center;

}

.hab-hero{

    background-image:url("bghab.jpg");

}

.niigem-hero{

    background-image:url("bghiigem.jpg");

}

.hab-overlay,
.niigem-overlay{

    position:absolute;

    inset:0;

    background:rgba(255, 255, 255, 0.867);

}

.hab-hero .container,
.niigem-hero .container{

    position:relative;

    z-index:1;

}

img{

    display:block;

    width:100%;

}

a{

    text-decoration:none;

    color:var(--link);

}

ul{

    list-style:none;

}

.container{

    width:min(92%,var(--max-width));

    margin:auto;

}

.section{

    padding:110px 0;

}

.section-header{

    max-width:700px;

    margin:0 auto 70px;

    text-align:center;

}

.section-tag{

    display:inline-block;

    color:var(--gold);

    font-weight:700;

    text-transform:uppercase;

    letter-spacing:4px;

    margin-bottom:18px;

    font-size:.8rem;

}

.section-header h2{

    font-size:3rem;

    margin-bottom:25px;

    line-height:1.15;

}

.section-header p{

    color:var(--gray);

    font-size:1.05rem;

}

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

.header{

    position:fixed;

    top:0;

    left:0;

    width:100%;

    z-index:999;

    transition:.4s;

    background:rgba(15,15,15,.25);

    backdrop-filter:blur(18px);

}

.header .container{

    display:flex;

    justify-content:space-between;

    align-items:center;

    height:90px;

}

.logo{

    display:flex;

    align-items:center;

    gap:16px;

}

.logo img{

    width:58px;

    height:58px;

    object-fit:cover;

    border-radius:12px;

}

.logo h2{

    color:white;

    font-size:1.1rem;

}

.logo span{

    color:#d8d8d8;

    font-size:.8rem;

}

.navbar{

    display:flex;

    gap:40px;

}

.navbar a{

    color:#ffffff;

    font-weight:600;

    transition:.3s;

    position:relative;

}

.navbar a::after{

    content:"";

    position:absolute;

    left:0;

    bottom:-6px;

    width:100%;

    height:2px;

    background:var(--gold);

    transform:scaleX(0);

    transition:.3s;

}

.navbar a:hover{

    color:var(--gold);

}

.navbar a:hover::after{

    transform:scaleX(1);

}

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

.hero{

    position:relative;

    min-height:100vh;

    display:flex;

    align-items:center;

    background:url("bg.png") center center/cover no-repeat;

}

.hero-overlay{

    position:absolute;

    inset:0;

    background:linear-gradient(

        rgba(0,0,0,.55),

        rgba(0,0,0,.55)

    );

}

.hero-content{

    position:relative;

    z-index:2;

    color:white;

    max-width:760px;

}

.hero-subtitle{

    letter-spacing:5px;

    color:var(--gold);

    font-weight:700;

    margin-bottom:25px;

}

.hero h1{

    font-size:4.8rem;

    line-height:1.1;

    margin-bottom:30px;

}

.hero-description{

    font-size:1.15rem;

    color:#e5e5e5;

    margin-bottom:40px;

    max-width:650px;

}

.hero-buttons{

    display:flex;

    gap:18px;

    flex-wrap:wrap;

}

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

.btn{

    display:inline-flex;

    align-items:center;

    justify-content:center;

    padding:16px 34px;

    border-radius:50px;

    font-weight:700;

    transition:var(--transition);

    cursor:pointer;

}

.btn-primary{

    background:var(--gold);

    color:#111;

}

.btn-primary:hover{

    background:var(--gold-light);

    transform:translateY(-4px);

}

.btn-outline{

    background:var(--gold);

    color:#111;
}

.btn-outline:hover{

    background:var(--gold-light);

    transform:translateY(-4px);

}

/* ======================================
   STATS
====================================== */

.stats{

    margin-top:-70px;

    position:relative;

    z-index:5;

}

.stats-grid{

    display:grid;

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

    gap:25px;

}

.stat-card{

    background:white;

    border-radius:18px;

    padding:45px 25px;

    text-align:center;

    box-shadow:var(--shadow);

    transition:.3s;

}

.stat-card:hover{

    transform:translateY(-8px);

}

.stat-card h2{

    font-size:3rem;

    color:var(--gold);

    margin-bottom:10px;

}

.stat-card p{

    color:var(--gray);

    font-weight:600;

}
/* ======================================
   ABOUT SECTION
====================================== */

.about{

    background:#fff;

}

.about-grid{

    display:grid;

    grid-template-columns:1fr 1fr;

    gap:80px;

    align-items:center;

}

.about-image{

    overflow:hidden;

    border-radius:24px;

    box-shadow:var(--shadow);

}

.about-image img{

    width:100%;

    height:650px;

    object-fit:cover;

    transition:.6s ease;

}

.about-image:hover img{

    transform:scale(1.05);

}

.about-content h2{

    font-size:3rem;

    line-height:1.2;

    margin:20px 0 30px;

}

.about-content p{

    color:var(--gray);

    margin-bottom:24px;

    font-size:1.05rem;

}

.about-features{

    display:grid;

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

    gap:18px;

    margin-top:40px;

}

.about-features div{

    background:#fafafa;

    padding:22px;

    border-left:4px solid var(--gold);

    border-radius:12px;

    font-weight:600;

    transition:.3s;

}

.about-features div:hover{

    background:var(--gold);

    color:#111;

    transform:translateX(8px);

}

/* ======================================
   TIMELINE
====================================== */

.history{

    background:#f8f8f8;

}

.timeline{

    position:relative;

    max-width:950px;

    margin:70px auto 0;

    padding-left:50px;

}

.timeline::before{

    content:"";

    position:absolute;

    left:18px;

    top:0;

    width:4px;

    height:100%;

    background:var(--gold);

}

.timeline-item{

    position:relative;

    margin-bottom:60px;

}

.timeline-item:last-child{

    margin-bottom:0;

}

.timeline-item::before{

    content:"";

    position:absolute;

    left:-41px;

    top:8px;

    width:18px;

    height:18px;

    border-radius:50%;

    background:var(--gold);

    border:5px solid white;

    box-shadow:0 0 0 5px rgba(201,162,39,.15);

}

.timeline-year{

    color:var(--gold);

    font-size:1.8rem;

    font-weight:800;

    margin-bottom:12px;

}

.timeline-content{

    background:white;

    border-radius:18px;

    padding:35px;

    box-shadow:var(--shadow);

    transition:.35s;

}

.timeline-content:hover{

    transform:translateY(-8px);

}

.timeline-content h3{

    margin-bottom:15px;

    font-size:1.45rem;

}

.timeline-content p{

    color:var(--gray);

    line-height:1.8;

}

/* ======================================
   OPERATIONS
====================================== */

.operations{

    background:white;

}

.operation-grid{

    display:grid;

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

    gap:30px;

    margin-top:70px;

}

.operation-card{

    background:white;

    border-radius:22px;

    overflow:hidden;

    box-shadow:var(--shadow);

    transition:.35s ease;

}

.operation-card:hover{

    transform:translateY(-12px);

}

.operation-card img{

    width:100%;

    height:150px;

    object-fit:cover;

    transition:.5s;

}

.operation-card:hover img{

    transform:scale(1.08);

}

.operation-body{

    padding:30px;

}

.operation-body h3{

    margin-bottom:16px;

    font-size:1.5rem;

}

.operation-body p{

    color:var(--gray);

    line-height:1.8;

}
/* ======================================
   EQUIPMENT GALLERY
====================================== */

.equipment{

    background:#f8f8f8;

}

.gallery{

    display:grid;

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

    gap:25px;

    margin-top:70px;

}

.gallery img{

    width:100%;

    height:350px;

    object-fit:cover;

    border-radius:20px;

    box-shadow:var(--shadow);

    transition:.4s ease;

}

.gallery img:hover{

    transform:scale(1.04);

    filter:brightness(1.08);

}

/* ======================================
   SAFETY
====================================== */

.safety{

    background:white;

}

.safety-grid{

    display:grid;

    grid-template-columns:1fr 1fr;

    gap:70px;

    align-items:center;

}

.safety-grid img{

    width:100%;

    height:100%;

    object-fit:cover;

    border-radius:24px;

    box-shadow:var(--shadow);

}

.safety h2{

    font-size:3rem;

    margin:20px 0 30px;

    line-height:1.2;

}

.safety p{

    color:var(--gray);

    margin-bottom:20px;

    line-height:1.9;

}

.safety-list{

    margin-top:35px;

}

.safety-list li{

    margin-bottom:18px;

    padding:18px 22px;

    background:#fafafa;

    border-left:5px solid var(--gold);

    border-radius:12px;

    font-weight:600;

    transition:.3s;

}

.safety-list li:hover{

    background:var(--gold);

    color:#111;

    transform:translateX(10px);

}

/* ======================================
   VALUES
====================================== */

.values{

    background:#111;

    color:white;

}

.values .section-header h2{

    color:white;

}

.values .section-header p{

    color:#bfbfbf;

}

.values-grid{

    display:grid;

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

    gap:30px;

}

.value-card{

    background:#1c1c1c;

    padding:40px 30px;

    border-radius:20px;

    border-top:4px solid var(--gold);

    transition:.35s ease;

}

.value-card:hover{

    transform:translateY(-12px);

    background:#242424;

}

.value-card h3{

    margin-bottom:18px;

    font-size:1.4rem;

}

.value-card p{

    color:#cccccc;

    line-height:1.8;

}

/* ======================================
   IMAGE OVERLAY EFFECT
====================================== */

.operation-card,

.gallery img,

.about-image,

.safety-grid img{

    overflow:hidden;

}

.operation-card img,

.gallery img,

.about-image img,

.safety-grid img{

    transition:.6s ease;

}

.operation-card:hover img,

.gallery img:hover,

.about-image:hover img,

.safety-grid img:hover{

    transform:scale(1.08);

}

/* ======================================
   SECTION FADE-IN
====================================== */

.section{

    opacity:0;

    transform:translateY(60px);

    transition:opacity .9s ease,
               transform .9s ease;

}

.section.show{

    opacity:1;

    transform:translateY(0);

}
/* ======================================
   CAREERS
====================================== */

.careers{

    background:#f7f7f7;

}

.careers-grid{

    display:grid;

    grid-template-columns:1fr 1fr;

    gap:70px;

    align-items:start;

}

.careers-content h2{

    font-size:3rem;

    margin:20px 0 30px;

}

.careers-content p{

    color:var(--gray);

    margin-bottom:40px;

}

.career-benefits{

    display:grid;

    gap:20px;

}

.benefit{

    background:white;

    padding:25px;

    border-radius:18px;

    box-shadow:var(--shadow);

    transition:.3s;

}

.benefit:hover{

    transform:translateY(-8px);

}

.benefit h3{

    margin-bottom:10px;

}

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

.application-form{

    background:white;

    padding:40px;

    border-radius:24px;

    box-shadow:var(--shadow);

}

.form-group{

    display:flex;

    flex-direction:column;

    margin-bottom:22px;

}

.form-group label{

    margin-bottom:8px;

    font-weight:700;

}

.form-group input,

.form-group select,

.form-group textarea{

    padding:15px;

    border:1px solid #ddd;

    border-radius:12px;

    font-size:1rem;

    font-family:inherit;

    transition:.3s;

}

.form-group input:focus,

.form-group select:focus,

.form-group textarea:focus{

    border-color:var(--gold);

    outline:none;

    box-shadow:0 0 0 3px rgba(201,162,39,.15);

}

textarea{

    resize:vertical;

}

.form-status{

    margin-top:20px;

    font-weight:600;

    color:var(--gold);

}

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

.contact{

    background:white;

}

.contact-grid{

    display:grid;

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

    gap:30px;

}

.contact-card{

    background:#fafafa;

    padding:40px;

    text-align:center;

    border-radius:20px;

    transition:.35s;

    box-shadow:var(--shadow);

}

.contact-card:hover{

    transform:translateY(-10px);

}

.contact-card h3{

    color:var(--gold);

    margin-bottom:15px;

}

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

.footer{

    background:#111;

    color:white;

    padding:70px 0 25px;

}

.footer-grid{

    display:grid;

    grid-template-columns:2fr 1fr 1fr;

    gap:50px;

    margin-bottom:50px;

}

.footer h3,

.footer h4{

    margin-bottom:20px;

}

.footer a{

    display:block;

    color:#cfcfcf;

    margin-bottom:12px;

    transition:.3s;

}

.footer a:hover{

    color:var(--gold);

}

.footer p{

    color:#cfcfcf;

    line-height:1.8;

}

.copyright{

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

    padding-top:25px;

    text-align:center;

    color:#888;

}

/* ======================================
   SCROLL TO TOP
====================================== */

.scroll-top{

    position:fixed;

    right:30px;

    bottom:30px;

    width:55px;

    height:55px;

    border:none;

    border-radius:50%;

    background:var(--gold);

    color:#111;

    font-size:1.4rem;

    cursor:pointer;

    box-shadow:var(--shadow);

    opacity:0;

    visibility:hidden;

    transition:.35s;

}

.scroll-top.show{

    opacity:1;

    visibility:visible;

}

.scroll-top:hover{

    transform:translateY(-6px);

}

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

@media(max-width:1000px){

    .hero h1{

        font-size:3.5rem;

    }

    .about-grid,

    .safety-grid,

    .careers-grid{

        grid-template-columns:1fr;

    }

    .operation-grid{

        grid-template-columns:1fr 1fr;

    }

    .values-grid{

        grid-template-columns:1fr 1fr;

    }

    .contact-grid{

        grid-template-columns:1fr;

    }

    .stats-grid{

        grid-template-columns:1fr 1fr;

    }

    .footer-grid{

        grid-template-columns:1fr;

    }

}

@media(max-width:768px){

    .navbar{

        display:none;

    }

    .hero{

        text-align:center;

    }

    .hero h1{

        font-size:2.6rem;

    }

    .hero-buttons{

        justify-content:center;

    }

    .section{

        padding:80px 0;

    }

    .section-header h2{

        font-size:2.2rem;

    }

    .gallery{

        grid-template-columns:1fr;

    }

    .operation-grid{

        grid-template-columns:1fr;

    }

    .values-grid{

        grid-template-columns:1fr;

    }

    .stats-grid{

        grid-template-columns:1fr;

    }

}
/* ======================================
   CAREERS
====================================== */

.careers{

    background:#f7f7f7;

}

.careers-grid{

    display:grid;

    grid-template-columns:1fr 1fr;

    gap:70px;

    align-items:start;

}

.careers-content h2{

    font-size:3rem;

    margin:20px 0 30px;

}

.careers-content p{

    color:var(--gray);

    margin-bottom:40px;

}

.career-benefits{

    display:grid;

    gap:20px;

}

.benefit{

    background:white;

    padding:25px;

    border-radius:18px;

    box-shadow:var(--shadow);

    transition:.3s;

}

.benefit:hover{

    transform:translateY(-8px);

}

.benefit h3{

    margin-bottom:10px;

}

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

.application-form{

    background:white;

    padding:40px;

    border-radius:24px;

    box-shadow:var(--shadow);

}

.form-group{

    display:flex;

    flex-direction:column;

    margin-bottom:22px;

}

.form-group label{

    margin-bottom:8px;

    font-weight:700;

}

.form-group input,

.form-group select,

.form-group textarea{

    padding:15px;

    border:1px solid #ddd;

    border-radius:12px;

    font-size:1rem;

    font-family:inherit;

    transition:.3s;

}

.form-group input:focus,

.form-group select:focus,

.form-group textarea:focus{

    border-color:var(--gold);

    outline:none;

    box-shadow:0 0 0 3px rgba(201,162,39,.15);

}

textarea{

    resize:vertical;

}

.form-status{

    margin-top:20px;

    font-weight:600;

    color:var(--gold);

}

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

.contact{

    background:white;

}

.contact-grid{

    display:grid;

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

    gap:30px;

}

.contact-card{

    background:#fafafa;

    padding:40px;

    text-align:center;

    border-radius:20px;

    transition:.35s;

    box-shadow:var(--shadow);

}

.contact-card:hover{

    transform:translateY(-10px);

}

.contact-card h3{

    color:var(--gold);

    margin-bottom:15px;

}

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

.footer{

    background:#111;

    color:white;

    padding:70px 0 25px;

}

.footer-grid{

    display:grid;

    grid-template-columns:2fr 1fr 1fr;

    gap:50px;

    margin-bottom:50px;

}

.footer h3,

.footer h4{

    margin-bottom:20px;

}

.footer a{

    display:block;

    color:#cfcfcf;

    margin-bottom:12px;

    transition:.3s;

}

.footer a:hover{

    color:var(--gold);

}

.footer p{

    color:#cfcfcf;

    line-height:1.8;

}

.copyright{

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

    padding-top:25px;

    text-align:center;

    color:#888;

}

/* ======================================
   SCROLL TO TOP
====================================== */

.scroll-top{

    position:fixed;

    right:30px;

    bottom:30px;

    width:55px;

    height:55px;

    border:none;

    border-radius:50%;

    background:var(--gold);

    color:#111;

    font-size:1.4rem;

    cursor:pointer;

    box-shadow:var(--shadow);

    opacity:0;

    visibility:hidden;

    transition:.35s;

}

.scroll-top.show{

    opacity:1;

    visibility:visible;

}

.scroll-top:hover{

    transform:translateY(-6px);

}

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

@media(max-width:1000px){

    .hero h1{

        font-size:3.5rem;

    }

    .about-grid,

    .safety-grid,

    .careers-grid{

        grid-template-columns:1fr;

    }

    .operation-grid{

        grid-template-columns:1fr 1fr;

    }

    .values-grid{

        grid-template-columns:1fr 1fr;

    }

    .contact-grid{

        grid-template-columns:1fr;

    }

    .stats-grid{

        grid-template-columns:1fr 1fr;

    }

    .footer-grid{

        grid-template-columns:1fr;

    }

}

@media(max-width:768px){

    .navbar{

        display:none;

    }

    .hero{

        text-align:center;

    }

    .hero h1{

        font-size:2.6rem;

    }

    .hero-buttons{

        justify-content:center;

    }

    .section{

        padding:80px 0;

    }

    .section-header h2{

        font-size:2.2rem;

    }

    .gallery{

        grid-template-columns:1fr;

    }

    .operation-grid{

        grid-template-columns:1fr;

    }

    .values-grid{

        grid-template-columns:1fr;

    }

    .stats-grid{

        grid-template-columns:1fr;

    }

}