:root {
    --sn-spacing: 16px;
    --sn-radius: 12px;
    --sn-shadow: 0 18px 40px rgba(15, 23, 42, 0.15);
    --sn-background: var(--bs-body-bg, #ffffff);
    --sn-color: var(--bs-body-color, #212529);
    --sn-zindex: 1090;
}

.sn-notify-container {
    position: fixed;
    z-index: var(--sn-zindex);
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: min(360px, calc(100vw - 32px));
    pointer-events: none;
}

.sn-notify-container--top-left {
    top: var(--sn-spacing);
    left: var(--sn-spacing);
    align-items: flex-start;
}

.sn-notify-container--top-center {
    top: var(--sn-spacing);
    left: 50%;
    transform: translateX(-50%);
    align-items: center;
}

.sn-notify-container--top-right {
    top: var(--sn-spacing);
    right: var(--sn-spacing);
    align-items: flex-end;
}

.sn-notify-container--bottom-left {
    bottom: var(--sn-spacing);
    left: var(--sn-spacing);
    align-items: flex-start;
}

.sn-notify-container--bottom-center {
    bottom: var(--sn-spacing);
    left: 50%;
    transform: translateX(-50%);
    align-items: center;
}

.sn-notify-container--bottom-right {
    bottom: var(--sn-spacing);
    right: var(--sn-spacing);
    align-items: flex-end;
}

.sn-notification {
    --sn-accent: var(--bs-primary);
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 14px 18px;
    border-radius: var(--sn-radius);
    border-inline-start: 4px solid var(--sn-accent);
    background: var(--sn-background);
    color: var(--sn-color);
    box-shadow: var(--sn-shadow);
    opacity: 0;
    transform: translateY(12px) scale(0.98);
    transition: opacity 180ms ease, transform 180ms ease;
    pointer-events: auto;
    overflow: hidden;
}

.sn-notification--visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.sn-notification--closing {
    opacity: 0;
    transform: translateY(8px) scale(0.97);
}

.sn-notification__content {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-right: 28px;
}

.sn-notification__title {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.sn-notification__body {
    font-size: 0.92rem;
    line-height: 1.45;
    word-break: break-word;
}

.sn-notification__body strong,
.sn-notification__body b {
    font-weight: 700;
}

.sn-notification__close {
    position: absolute;
    top: 10px;
    right: 10px;
    border: 0;
    background: transparent;
    color: inherit;
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 120ms ease;
}

.sn-notification__close:hover,
.sn-notification__close:focus-visible {
    opacity: 1;
}

.sn-notification__progress {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 3px;
    background: var(--sn-accent);
    opacity: 0.35;
    transform-origin: left;
    transform: scaleX(1);
}

.sn-notification--success {
    --sn-accent: var(--bs-success, #198754);
}

.sn-notification--danger {
    --sn-accent: var(--bs-danger, #dc3545);
}

.sn-notification--warning {
    --sn-accent: var(--bs-warning, #ffc107);
}

.sn-notification--info {
    --sn-accent: var(--bs-info, #0dcaf0);
}

.sn-notification--secondary {
    --sn-accent: var(--bs-secondary, #6c757d);
}

.sn-notification--light {
    --sn-accent: var(--bs-light, #f8f9fa);
}

.sn-notification--dark {
    --sn-accent: var(--bs-dark, #212529);
}

.sn-notification:focus-visible {
    outline: 2px solid var(--sn-accent);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    .sn-notification,
    .sn-notification__close,
    .sn-notification__progress {
        transition: none !important;
    }
}