.sonner {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 9999;
    width: min(420px, calc(100% - 32px));
    background: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 10px;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
    padding: 12px 14px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.sonner.is-active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.sonner-content {
    font-size: 14px;
    color: #111827;
    margin-bottom: 8px;
}

.sonner-bar {
    width: 100%;
    height: 6px;
    background: #f1f5f9;
    border-radius: 999px;
    overflow: hidden;
}

.sonner-bar-fill {
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, #9A1C1F, #C42C30, #9A1C1F);
    background-size: 200% 100%;
    border-radius: 999px;
    transition: width 0.25s ease;
    animation: sonnerShift 2s linear infinite;
}

@keyframes sonnerShift {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

@media (max-width: 640px) {
    .sonner {
        top: 12px;
        right: 12px;
        width: calc(100% - 24px);
    }
}