:root {
    --notification-bg: #4279EF;
    --notification-success: #2e7d32;
    --notification-error: #d32f2f;
    --notification-info: #1976d2;
    --notification-color: #fff;
    --indicator-color: #FFD700;
    --border-radius: 10px;
    --shadow: 0 4px 18px rgba(0, 0, 0, 0.18);
    --speed: .25s ease-in-out;
}

/* Контейнеры */
.notification__container {
    position: fixed;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 12px;
    pointer-events: none;
}

.notification__container--top-left   { top: 0;    left: 0;    align-items: flex-start; }
.notification__container--top-right  { top: 0;    right: 0;   align-items: flex-end; }
.notification__container--bottom-left{ bottom: 0; left: 0;    align-items: flex-start; }
.notification__container--bottom-right{bottom: 0; right: 0;   align-items: flex-end; }
.notification__container--top-center {
    top: 0; left: 50%;
    transform: translateX(-50%);
    align-items: center;
}
.notification__container--bottom-center {
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    align-items: center;
}

/* Карточка */
.notification {
    background-color: var(--notification-bg);
    color: var(--notification-color);
    min-width: 240px;
    max-width: 320px;
    width: 100%;
    padding: 12px 32px 12px 12px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .4s ease, transform .4s ease;
    pointer-events: auto;
    will-change: transform, opacity;
}

.notification--show {
    opacity: 1;
    transform: translateY(0);
}

/* Типы */
.notification--success { background-color: var(--notification-success); }
.notification--error   { background-color: var(--notification-error); }
.notification--info    { background-color: var(--notification-info); }

/* Контент */
.notification__header {
    font-weight: 700;
    font-size: 14px;
    margin: 0 0 4px;
    line-height: 1.25;
}
.notification__content {
    font-size: 14px;
    margin: 0;
    line-height: 1.35;
}

/* Индикатор жизни */
.notification__indicator {
    position: absolute;
    bottom: 0; left: 0;
    height: 3px; width: 100%;
    background-color: var(--indicator-color);
    border-bottom-left-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
}

/* Кнопка закрытия */
.notification__close {
    position: absolute;
    top: 6px; right: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: none;
    border: none;
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    color: #fff;
    width: 22px; height: 22px;
    padding: 0;
    border-radius: 999px;
    z-index: 10;
}
.notification__close:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
}
@media (hover: hover) {
    .notification__close:hover {
        background: rgba(255,255,255,.15);
    }
}

/* Снижение анимаций */
@media (prefers-reduced-motion: reduce) {
    .notification {
        transition: none !important;
        transform: none !important;
    }
    .notification__indicator {
        display: none !important;
    }
}

/* Тёмная тема (опционально) */
[data-theme="dark"] .notification {
    box-shadow: 0 6px 26px rgba(0,0,0,.35);
}