.gop-stm-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(15, 30, 45, 0.55);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    transition: opacity 160ms ease-out;
}

.gop-stm-overlay[data-gop-stm-open="true"] {
    display: flex;
    opacity: 1;
}

.gop-stm-panel {
    background-color: #ffffff;
    width: min(440px, calc(100vw - 32px));
    max-width: 100%;
    border-radius: 6px;
    box-shadow: 0 18px 48px rgba(15, 30, 45, 0.20), 0 2px 6px rgba(15, 30, 45, 0.08);
    border: 1px solid rgba(15, 30, 45, 0.08);
    padding: 28px 32px 32px;
    text-align: center;
    position: relative;
    font-family: inherit;
    color: #3a4553;
}

.gop-stm-close {
    position: absolute;
    top: 10px;
    right: 12px;
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: #8a96a3;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    border-radius: 4px;
}

.gop-stm-close:hover,
.gop-stm-close:focus-visible {
    color: #3a4553;
    background-color: rgba(15, 30, 45, 0.06);
    outline: none;
}

.gop-stm-title {
    color: #2ea0c8;
    font-size: 18px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-weight: 700;
    margin: 4px 0 14px;
    line-height: 1.25;
}

.gop-stm-body {
    font-size: 13px;
    line-height: 1.55;
    color: #4a5663;
    margin: 0 auto 22px;
    max-width: 320px;
}

.gop-stm-countdown {
    font-size: 44px;
    letter-spacing: 0.06em;
    color: #b7bec6;
    font-weight: 300;
    font-variant-numeric: tabular-nums;
    margin: 4px 0 26px;
    line-height: 1;
}

.gop-stm-actions {
    display: flex;
    justify-content: center;
}

.gop-stm-primary {
    background-color: #2ea0c8;
    color: #ffffff;
    border: none;
    padding: 11px 28px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.02em;
    cursor: pointer;
    min-width: 180px;
    transition: background-color 120ms ease-out;
}

.gop-stm-primary:hover,
.gop-stm-primary:focus-visible {
    background-color: #2688a8;
    outline: none;
}

.gop-stm-primary[disabled] {
    opacity: 0.6;
    cursor: progress;
}

@media (max-width: 480px) {
    .gop-stm-panel {
        padding: 24px 20px 26px;
    }
    .gop-stm-countdown {
        font-size: 36px;
    }
}