:root{
    --bg:#f8fafc;
    --surface:#ffffff;
    --muted:#64748b;
    --accent:#4f46e5;
    --accent-dark:#4338ca;
    --accent-600:#6366f1;
    --card:#ffffff;
    --glass:rgba(255,255,255,0.6);
    --max-width:1200px;
    --radius:14px;
    --container-padding:24px;
    --border-soft:rgba(0,0,0,0.06);
    --gradient-main: linear-gradient(135deg, #4338ca, #2563eb);
}
.container{
    max-width:var(--max-width);
    margin:auto;
}

.header{
    margin-bottom:40px;
}

.header h1{
    font-size:42px;
    margin-bottom:12px;
}

.header p{
    color:var(--muted);
    line-height:1.7;
    max-width:800px;
}

.disclaimer{
    margin-top:20px;
    background:#fff7ed;
    border:1px solid #fdba74;
    padding:18px;
    border-radius:12px;
    color:#9a3412;
    line-height:1.6;
}

.card{
    background:var(--surface);
    border-radius:var(--radius);
    padding:32px;
    border:1px solid var(--border-soft);
    box-shadow:0 10px 40px rgba(0,0,0,0.04);
    margin-bottom: 5%;
}

.section-title{
    font-size:24px;
    margin-bottom:20px;
}

select{
    width:100%;
    padding:16px;
    border-radius:12px;
    border:1px solid #cbd5e1;
    font-size:16px;
    outline:none;
}

.tabs{
    display:flex;
    gap:12px;
    margin:30px 0;
    flex-wrap:wrap;
}

.tab-btn{
    border:none;
    background:#e2e8f0;
    color:#0f172a;
    padding:12px 18px;
    border-radius:10px;
    cursor:pointer;
    transition:0.3s;
    font-weight:600;
}

.tab-btn.active{
    background:var(--gradient-main);
    color:white;
}

.tab-content{
    display:none;
}

.tab-content.active{
    display:block;
}

.options-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
    gap:18px;
}

.option-card{
    background:#fff;
    border:1px solid #e2e8f0;
    border-radius:14px;
    padding:18px;
    transition:0.3s;
}

.option-card:hover{
    border-color:var(--accent);
    transform:translateY(-2px);
}

.option-card label{
    display:flex;
    align-items:flex-start;
    gap:12px;
    cursor:pointer;
}

.option-card input{
    margin-top:4px;
    transform:scale(1.2);
}

.option-content{
    flex:1;
}

.option-title{
    font-weight:700;
    margin-bottom:6px;
}

.option-price{
    color:var(--accent);
    font-weight:700;
}

.summary{
    margin-top:40px;
    background:linear-gradient(135deg,#4338ca,#2563eb);
    color:white;
    padding:30px;
    border-radius:20px;
}

.summary h2{
    margin-bottom:20px;
}

.total{
    font-size:46px;
    font-weight:800;
}

.summary ul{
    margin-top:20px;
    padding-left:18px;
}

.summary li{
    margin-bottom:8px;
}

.footer-note{
    margin-top:20px;
    opacity:0.9;
    line-height:1.6;
}

@media(max-width:768px){

    .header h1{
        font-size:32px;
    }

    .total{
        font-size:34px;
    }

}