:root{
    --primary:#2C5EAD;
    --secondary:#1591DC;
    --accent:#4BB8FA;
    --light:#C4E2F5;
    --bg:#F8FCFF;
}

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

html{
    scroll-behavior:smooth;
}

body{
    font-family:Poppins,sans-serif;
    background:var(--bg);
    overflow-x:hidden;
}

section{
    padding:80px 0;
}

.container{
    max-width:1200px;
    width: 100%;
    padding-left: 15px;
    padding-right: 15px;
}

.navbar-custom{
    background:white;
    padding:14px 0;
    transition:.35s;
    box-shadow:0 2px 15px rgba(0,0,0,.05);
}

.navbar-scrolled{
    box-shadow:0 15px 35px rgba(0,0,0,.08);
    padding:12px 0;
}

.navbar-brand img{
    width:50px;
}

.navbar-brand h4{
    margin:0;
    font-size:22px;
    font-weight:700;
    color:var(--primary);
}

.navbar-brand small{
    display:block;
    margin-top:-3px;
    font-size: 11px;
    color:#777;
}

.nav-link{
    font-weight:500;
    color:#1f2937;
    position:relative;
    padding: 8px 0;
}

@media(min-width: 992px) {
    .nav-link {
        margin-left:30px;
    }
    .nav-link::after{
        content:"";
        position:absolute;
        left:0;
        bottom:-8px;
        width:0;
        height:3px;
        border-radius:10px;
        background:var(--primary);
        transition:.3s;
    }
    .nav-link:hover::after,
    .nav-link.active::after{
        width:100%;
    }
    section {
        padding: 110px 0;
    }
}

.nav-link.active,
.nav-link:hover{
    color:var(--primary);
}

.hero{
    padding-top:140px;
}

.hero h1{
    font-size:32px;
    font-weight:600;
    line-height:1.25;
    color:#152238;
}

.hero span{
    color:var(--primary);
}

.hero p{
    margin-top:20px;
    font-size:14px;
    line-height:1.8;
    color:#666;
    max-width:100%;
}

.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.btn-main{
    background:var(--primary);
    color:white;
    padding:14px 30px;
    border-radius:50px;
    font-weight:600;
    transition:.35s;
    text-decoration: none;
    display: inline-block;
}

.btn-main:hover{
    background:#194d96;
    transform:translateY(-4px);
    color:white;
}

.btn-outline-main{
    padding:14px 30px;
    border-radius:50px;
    border:2px solid var(--primary);
    color:var(--primary);
    font-weight:600;
    text-decoration: none;
    display: inline-block;
}

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

.hero-img{
    width:100%;
    max-width:450px;
    height: auto;
    animation:float 5s ease-in-out infinite;
}

@keyframes float{
    0%,100%{
        transform:translateY(0);
    }
    50%{
        transform:translateY(-15px);
    }
}

/**ABOUT**/
.about-section{
    background:white;
}

.section-title h2{
    font-size:36px;
    font-weight:700;
    color:#183153;
    margin-bottom:12px;
}

.title-line{
    width:70px;
    height:4px;
    background:var(--primary);
    border-radius:30px;
    margin-bottom:25px;
}

.section-text{
    font-size:14px;
    line-height:1.8;
    color:#616161;
    margin-bottom:20px;
}

.feature-card{
    background:white;
    padding:30px;
    border-radius:24px;
    box-shadow:0 20px 50px rgba(44,94,173,.08);
}

.feature-item{
    display:flex;
    gap:20px;
    align-items:flex-start;
}

.feature-item h5{
    font-weight:700;
    margin-bottom:6px;
    color:#183153;
    font-size: 16px;
}

.feature-item p{
    margin:0;
    color:#6d6d6d;
    line-height:1.7;
    font-size: 13.5px;
}

.feature-icon{
    width:60px;
    height:60px;
    background:#EEF6FF;
    border-radius:50%;
    display:flex;
    justify-content:center;
    align-items:center;
    font-size:24px;
    color:var(--primary);
    flex-shrink:0;
}

/*REWARD*/
.reward-section{
    background:#F6FAFF;
}

.reward-card{
    background:white;
    padding:35px 20px;
    text-align:center;
    border-radius:24px;
    height:100%;
    transition:.35s;
    box-shadow:0 15px 40px rgba(44,94,173,.07);
}

.reward-card:hover{
    transform:translateY(-8px);
    box-shadow:0 25px 50px rgba(44,94,173,.15);
}

.reward-card img{
    width:80px;
    height:80px;
    object-fit:contain;
    margin-bottom:20px;
}

.reward-card h4{
    font-weight:700;
    font-size:20px;
    margin-bottom:12px;
    color:#183153;
}

.reward-card p{
    line-height:1.7;
    color:#666;
    font-size: 13.5px;
}

/*FOOTER*/
.footer{
    position: relative;
    margin-top: 40px;
    width: 100%;
    overflow: hidden;
}

.footer-wave{
    line-height: 0;
}

.footer-wave svg{
    display: block;
    width: 100%;
    height: 40px;
}

.footer-content{
    background: #2C5EAD;
    color: #fff;
    padding: 25px 0 15px;
}

.footer-logo{
    width: 38px;
    height: auto;
    border-radius: 8px;
}

.footer h3{
    margin: 0;
    font-size: 20px;
    font-weight: 700;
    line-height: 1.2;
}

.footer span{
    display: block;
    margin-top: 2px;
    font-size: 13px;
    color: rgba(255,255,255,.75);
}

.footer h5{
    font-size: 16px;
    margin-bottom: 12px;
    font-weight: 600;
    margin-top: 15px;
}

@media(min-width: 992px) {
    .footer h5 {
        margin-top: 0;
    }
}

.footer ul{
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer li{
    margin-bottom: 8px;
    font-size: 14px;
}

.footer a{
    color: rgba(255,255,255,.9);
    text-decoration: none;
    transition: .25s;
}

.footer a:hover{
    color: #C4E2F5;
}

.social{
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.social a{
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,.12);
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 15px;
    transition: .3s;
}

.social a:hover{
    background: #1591DC;
    transform: translateY(-3px);
}

.footer hr{
    margin: 20px 0 12px;
    border-color: rgba(255,255,255,.12);
}

.copyright{
    text-align: center;
    color: rgba(255,255,255,.75);
    font-size: 13px;
}

/*BACK TO TOP*/
#backTop{
    position:fixed;
    right:20px;
    bottom:20px;
    width:48px;
    height:48px;
    border:none;
    border-radius:50%;
    background:#1591DC;
    color:white;
    font-size:20px;
    box-shadow:0 15px 35px rgba(0,0,0,.18);
    opacity:0;
    visibility:hidden;
    transition:.35s;
    z-index:999;
}

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

/* RESPONSIVE MEDIA QUERIES */
@media(max-width:991px){
    .navbar-collapse {
        background: white;
        padding: 15px;
        border-radius: 12px;
        margin-top: 10px;
        box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    }
    
    .nav-link {
        padding: 10px 5px;
        border-bottom: 1px solid #eee;
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }

    .hero{
        padding-top:120px;
        text-align:center;
    }

    .hero h1{
        font-size:28px;
    }

    .hero p{
        margin:20px auto 0;
    }

    .button-group {
        justify-content: center;
        margin-top: 25px;
    }

    .hero-img{
        margin-top:20px;
        max-width: 320px;
    }

    .feature-card{
        margin-top:35px;
    }

    .section-title{
        text-align:center;
    }

    .title-line{
        margin:0 auto 20px;
    }

    .section-text{
        text-align:center;
    }

    /* UPDATE: Optimasi Footer mini & Bersebelahan di HP */
    .footer {
        margin-top: 20px;
    }
    .footer-wave svg {
        height: 25px;
    }
    .footer-content {
        padding: 15px 0 10px;
    }
    .footer h3 {
        font-size: 18px;
    }
    .footer h5 {
        font-size: 13px;
        margin-top: 5px;
        margin-bottom: 5px;
    }
    .footer li {
        margin-bottom: 4px;
        font-size: 11.5px;
        word-break: break-word;
    }
    .footer li i {
        margin-right: 4px !important;
    }
    .footer p {
        font-size: 13px;
    }
    .social {
        margin-top: 8px;
        gap: 6px;
    }
    .social a {
        width: 30px;
        height: 30px;
        font-size: 13px;
    }
    .footer hr {
        margin: 12px 0 8px;
    }
    .copyright {
        font-size: 11px;
    }
}