body {
    background-color: #f1f5f9;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* Avatar Gradient Modern */
.avatar-circle {
    width: 46px;
    height: 46px;
    background: linear-gradient(135deg, #4f46e5, #3b82f6);
    color: #ffffff;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.25);
}

/* Kartu Aktif */
.card-active {
    border: 2px solid #4f46e5 !important;
    background: #ffffff;
}

/* Kartu Terkunci / Belum Dimulai (Cerah & Kontras) */
.card-locked {
    background: #ffffff;
    border: 1px solid #e2e8f0 !important;
}

/* Kartu Selesai */
.card-completed {
    background: #ffffff;
    border: 1px solid #cbd5e1 !important;
}

/* Badge Pojok Kanan Atas Kartu */
.badge-status-top {
    position: absolute;
    top: 0;
    right: 0;
    border-bottom-left-radius: 0.75rem;
    padding: 6px 14px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.btn-action {
    padding: 10px;
    font-weight: 600;
    border-radius: 0.75rem;
}