:root{
    --navy:#07101f;
    --blue:#123a63;
    --steel:#e8eef5;
    --orange:#f47b20;
    --dark:#050b15;
    --text:#1b2430;
    --muted:#64748b;
    --white:#fff;
}

*{
    box-sizing:border-box;
}

html{
    scroll-behavior:smooth;
}

body{
    margin:0;
    font-family:Arial,Helvetica,sans-serif;
    color:var(--text);
    background:#fff;
    line-height:1.6;
}

.container{
    width:min(1180px,92%);
    margin:auto;
}

.site-header{
    position:fixed;
    top:0;
    left:0;
    right:0;
    z-index:1000;
    background:rgba(5,11,21,.94);
    backdrop-filter:blur(10px);
    box-shadow:0 10px 30px rgba(0,0,0,.25);
}

.nav-wrap{
    height:92px;
    display:flex;
    align-items:center;
    justify-content:space-between;
}

.brand img{
    height:76px;
    display:block;
    background:#fff;
    border-radius:10px;
    padding:6px;
    box-shadow:0 10px 24px rgba(0,0,0,.25);
}

nav{
    display:flex;
    gap:28px;
    align-items:center;
}

nav a{
    color:#fff;
    text-decoration:none;
    font-weight:800;
    font-size:15px;
}

nav a:hover{
    color:var(--orange);
}

.nav-btn{
    background:var(--orange);
    color:#fff !important;
    padding:13px 22px;
    border-radius:999px;
}

.hero{
    min-height:100vh;
    position:relative;
    display:flex;
    align-items:center;
    background:url('assets/gallery/project-01.jpg') center/cover no-repeat;
    color:#fff;
    padding-top:105px;
}

.hero-overlay{
    position:absolute;
    inset:0;
    background:linear-gradient(90deg,rgba(5,11,21,.95),rgba(5,11,21,.72),rgba(5,11,21,.28));
}

.hero-content{
    position:relative;
    max-width:980px;
}

.eyebrow,
.section-title span{
    display:inline-block;
    color:var(--orange);
    text-transform:uppercase;
    letter-spacing:3px;
    font-weight:900;
    font-size:13px;
}

.hero h1{
    font-size:clamp(42px,6.5vw,78px);
    line-height:1.02;
    margin:18px 0;
    max-width:920px;
}

.hero-subtitle{
    font-size:21px;
    max-width:820px;
    color:#e5edf8;
}

.hero-actions{
    display:flex;
    gap:16px;
    flex-wrap:wrap;
    margin-top:32px;
}

.btn{
    display:inline-block;
    text-decoration:none;
    border:0;
    cursor:pointer;
    font-weight:900;
    border-radius:999px;
    padding:15px 26px;
    font-size:15px;
}

.primary{
    background:var(--orange);
    color:#fff;
}

.secondary{
    background:#fff;
    color:var(--navy);
}

.hero-stats{
    display:flex;
    gap:16px;
    flex-wrap:wrap;
    margin-top:48px;
}

.hero-stats div{
    background:rgba(255,255,255,.13);
    border:1px solid rgba(255,255,255,.22);
    padding:20px 24px;
    border-radius:18px;
    min-width:175px;
    backdrop-filter:blur(8px);
}

.hero-stats strong{
    display:block;
    font-size:30px;
}

.hero-stats span{
    font-size:13px;
    color:#d8e2ef;
}

.section{
    padding:95px 0;
}

.section-title{
    text-align:center;
    max-width:850px;
    margin:0 auto 48px;
}

.section-title h2,
.split h2,
.contact-section h2{
    font-size:clamp(32px,4vw,50px);
    line-height:1.1;
    margin:12px 0;
}

.section-title p{
    color:var(--muted);
    font-size:18px;
}

.service-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
}

.service-card{
    padding:30px;
    background:#fff;
    border:1px solid #e4e9f0;
    border-radius:22px;
    box-shadow:0 18px 42px rgba(15,23,42,.08);
    transition:.25s;
}

.service-card:hover{
    transform:translateY(-7px);
    border-color:var(--orange);
}

.service-icon{
    width:52px;
    height:52px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:#fff3e8;
    border-radius:16px;
    font-size:25px;
    margin-bottom:16px;
}

.service-card h3{
    color:var(--navy);
    margin-top:0;
}

.service-card p{
    color:var(--muted);
}

.dark-section{
    background:linear-gradient(135deg,var(--dark),var(--blue));
    color:#fff;
}

.split-grid{
    display:grid;
    grid-template-columns:1.2fr .8fr;
    gap:55px;
    align-items:center;
}

.split p{
    color:#d8e2ef;
    font-size:17px;
}

.mission-card{
    background:#fff;
    color:var(--text);
    border-radius:26px;
    padding:36px;
    box-shadow:0 24px 55px rgba(0,0,0,.28);
}

.mission-card p{
    color:var(--muted);
}

.leaders{
    display:grid;
    gap:16px;
    margin-top:28px;
}

.leaders div{
    border-left:5px solid var(--orange);
    padding-left:16px;
}

.leaders strong{
    display:block;
    color:var(--navy);
    font-size:18px;
}

.leaders span{
    color:var(--muted);
}

.project-section{
    background:#f8fafc;
}

.project-cards{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:22px;
    margin-bottom:22px;
}

.project-card{
    position:relative;
    overflow:hidden;
    border-radius:22px;
    height:330px;
    box-shadow:0 20px 45px rgba(15,23,42,.18);
}

.project-card img{
    width:100%;
    height:100%;
    object-fit:cover;
    display:block;
    transition:.35s;
}

.project-card:hover img{
    transform:scale(1.06);
}

.project-card h3{
    position:absolute;
    left:0;
    right:0;
    bottom:0;
    margin:0;
    color:#fff;
    padding:50px 24px 22px;
    background:linear-gradient(transparent,rgba(5,11,21,.92));
    font-size:24px;
}

.gallery{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:16px;
}

.gallery img{
    width:100%;
    height:245px;
    object-fit:cover;
    border-radius:18px;
    box-shadow:0 16px 34px rgba(15,23,42,.12);
}

.why-section{
    background:var(--navy);
    color:#fff;
}

.section-title.light h2,
.section-title.light p{
    color:#fff;
}

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

.why-grid div{
    background:rgba(255,255,255,.08);
    border:1px solid rgba(255,255,255,.14);
    padding:26px;
    border-radius:20px;
}

.why-grid h3{
    margin-top:0;
    color:#fff;
}

.why-grid p{
    color:#d8e2ef;
}

.contact-grid{
    display:grid;
    grid-template-columns:.9fr 1.1fr;
    gap:48px;
    align-items:start;
}

.contact-cards{
    display:grid;
    gap:14px;
    margin-top:28px;
}

.contact-cards a{
    background:#f3f6fa;
    border-radius:15px;
    padding:17px 20px;
    text-decoration:none;
    color:var(--navy);
    font-weight:900;
    border-left:5px solid var(--orange);
}

.contact-form{
    background:#fff;
    border-radius:26px;
    padding:32px;
    box-shadow:0 20px 50px rgba(15,23,42,.14);
    border:1px solid #e4e9f0;
}

.contact-form input,
.contact-form textarea{
    width:100%;
    padding:16px;
    margin-bottom:14px;
    border:1px solid #d8e0eb;
    border-radius:13px;
    font:inherit;
}

.contact-form textarea{
    resize:vertical;
}

.alert{
    padding:12px 14px;
    border-radius:10px;
    margin-bottom:14px;
    font-weight:800;
}

.success{
    background:#dcfce7;
    color:#166534;
}

.error{
    background:#fee2e2;
    color:#991b1b;
}

.whatsapp-float{
    position:fixed;
    right:22px;
    bottom:22px;
    z-index:1200;
    background:#25D366;
    color:#fff;
    text-decoration:none;
    padding:15px 22px;
    border-radius:999px;
    font-weight:900;
    box-shadow:0 14px 32px rgba(0,0,0,.28);
}

footer{
    background:#050b15;
    color:#cbd5e1;
    padding:26px 0;
}

.footer-wrap{
    display:flex;
    justify-content:space-between;
    gap:20px;
    flex-wrap:wrap;
}

footer p{
    margin:0;
}

@media(max-width:900px){
    nav{
        display:none;
    }

    .service-grid,
    .project-cards,
    .gallery,
    .why-grid,
    .split-grid,
    .contact-grid{
        grid-template-columns:1fr;
    }

    .nav-wrap{
        height:82px;
    }

    .brand img{
        height:64px;
    }

    .hero{
        padding-top:90px;
    }

    .section{
        padding:72px 0;
    }

    .project-card{
        height:280px;
    }

    .gallery img{
        height:260px;
    }
}

@media(max-width:520px){
    .hero h1{
        font-size:38px;
    }

    .hero-subtitle{
        font-size:17px;
    }

    .hero-stats div{
        width:100%;
    }

    .gallery img{
        height:220px;
    }

    .contact-form{
        padding:22px;
    }

    .whatsapp-float{
        left:18px;
        right:18px;
        text-align:center;
    }
}