body {
    background: #e9eef5;
    font-family: Arial, sans-serif;
}

.step-tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 20px;
}

.step-tab {
    background: #cfe2ff;
    padding: 12px 20px;
    border-radius: 5px;
    margin-right: 5px;
    cursor: pointer;
    font-weight: 600;
    transition: 0.2s;
}

    .step-tab.active {
        background: #003366 !important;
        color: #fff !important;
    }

    .step-tab.disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }

.btn-navy {
    background: #003366;
    color: #fff;
}

    .btn-navy:hover {
        background: #001f44;
        color: #fff;
    }

.input-error {
    border: 2px solid #d9534f !important;
    background: #fff5f5;
}

.content-box {
    background: #ffffff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.loader {
    --d: 22px;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    color: #25b09b;
    box-shadow: calc(1*var(--d)) calc(0*var(--d)) 0 0, calc(0.707*var(--d)) calc(0.707*var(--d)) 0 1px, calc(0*var(--d)) calc(1*var(--d)) 0 2px, calc(-0.707*var(--d)) calc(0.707*var(--d)) 0 3px, calc(-1*var(--d)) calc(0*var(--d)) 0 4px, calc(-0.707*var(--d)) calc(-0.707*var(--d))0 5px, calc(0*var(--d)) calc(-1*var(--d)) 0 6px;
    animation: l27 1s infinite steps(8);
}

@keyframes l27 {
    100% {
        transform: rotate(1turn)
    }
}

.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
}

.step-tab.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    color: #000000;
}