:root { --platinum-grad: linear-gradient(135deg, #e5e4e2 0%, #ffffff 50%, #b4b4b4 100%); }
body { background-color: #f8fafd; font-family: 'Segoe UI', sans-serif; margin: 0; }

/* Sidebar Stabil */
.sidebar { background: #fff; border-right: 1px solid #e3e3e3; height: 100vh; position: fixed; width: 300px; z-index: 1000; top: 0; left: 0; padding: 25px; }
.logo-img { width: 140px; display: block; margin: 0 auto 20px; }

/* Konten Utama */
main { margin-left: 300px; padding: 40px; min-height: 100vh; padding-bottom: 120px; }

/* KARTU PLATINUM KDKMPPay */
.bank-card {
    background: var(--platinum-grad); color: #1a1a1a; border-radius: 28px; padding: 40px;
    min-height: 300px; display: flex; flex-direction: column; justify-content: space-between;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1); border: 1px solid #fff; position: relative;
}
.card-chip { width: 55px; height: 40px; background: linear-gradient(135deg, #d4d4d4, #888); border-radius: 8px; margin-bottom: 20px; }

/* Grid Fitur agar tidak berantakan */
.feature-grid { display: grid; grid-template-columns: repeat(2, 1); gap: 20px; }
.feature-card { background: #fff; border-radius: 20px; padding: 25px; border: 1px solid #eee; height: 100%; transition: 0.3s; }

/* Motif Suku Bawah */
.cultural-footer {
    position: fixed; bottom: 0; left: 300px; width: calc(100% - 300px);
    height: 100px; opacity: 0.4; pointer-events: none; z-index: 1;
    background-image: url('https://www.transparenttextures.com/patterns/batik-fractal.png');
}