/* ─── CONTAINER ─── */
.alert-container {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column-reverse;
    gap: 0.6rem;
    max-width: 380px;
    width: calc(100% - 3rem);
    pointer-events: none;
}

/* ─── ALERT ─── */
.alert {
    position: relative;
    border-radius: 1rem;
    padding: 1.1rem 1.25rem 1.1rem 1.25rem;
    pointer-events: auto;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    overflow: hidden;

    transform: translateX(calc(100% + 2rem));
    opacity: 0;
    animation: slideIn 0.45s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.alert.removing {
    animation: slideOut 0.3s cubic-bezier(0.5, 0, 0.75, 0) forwards;
}

/* ─── STRIPE (left accent bar) ─── */
.alert::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    border-radius: 999px;
    background: currentColor;
    opacity: 0.7;
}

/* ─── CLOSE ─── */
.alert-close {
    position: absolute;
    top: 0.55rem;
    right: 0.65rem;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.35;
    transition:
        opacity 0.2s,
        background 0.2s;
    color: currentColor;
    padding: 0;
}

.alert-close:hover {
    opacity: 0.85;
    background: rgba(0, 0, 0, 0.1);
}

.alert-close svg {
    width: 10px;
    height: 10px;
    stroke: currentColor;
    stroke-width: 2.2;
    stroke-linecap: round;
}

/* ─── LABEL ─── */
.alert-label {
    font-size: 0.67rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.65;
    margin-bottom: 0.15rem;
}

/* ─── MESSAGE ─── */
.alert-message {
    font-size: 0.88rem;
    font-weight: 500;
    line-height: 1.5;
    padding-right: 1.2rem;
}

/* ─── PROGRESS ─── */
.alert-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    width: 100%;
    transform-origin: left;
    background: currentColor;
    opacity: 0.25;
}

/* ─── VARIANTS ─── */
.alert.success {
    background: linear-gradient(
        135deg,
        var(--alert-success-bg-start) 0%,
        var(--alert-success-bg-end) 100%
    );
    border: 1px solid var(--alert-success-border);
    color: var(--alert-success-text);
    box-shadow:
        0 8px 32px var(--alert-success-shadow),
        0 1px 2px var(--alert-base-shadow);
}

.alert.error {
    background: linear-gradient(
        135deg,
        var(--alert-error-bg-start) 0%,
        var(--alert-error-bg-end) 100%
    );
    border: 1px solid var(--alert-error-border);
    color: var(--alert-error-text);
    box-shadow:
        0 8px 32px var(--alert-error-shadow),
        0 1px 2px var(--alert-base-shadow);
}

.alert.warning {
    background: linear-gradient(
        135deg,
        var(--alert-warning-bg-start) 0%,
        var(--alert-warning-bg-end) 100%
    );
    border: 1px solid var(--alert-warning-border);
    color: var(--alert-warning-text);
    box-shadow:
        0 8px 32px var(--alert-warning-shadow),
        0 1px 2px var(--alert-base-shadow);
}

.alert.info {
    background: linear-gradient(
        135deg,
        var(--alert-info-bg-start) 0%,
        var(--alert-info-bg-end) 100%
    );
    border: 1px solid var(--alert-info-border);
    color: var(--alert-info-text);
    box-shadow:
        0 8px 32px var(--alert-info-shadow),
        0 1px 2px var(--alert-base-shadow);
}

/* ─── ANIMATIONS ─── */
@keyframes slideIn {
    from {
        transform: translateX(calc(100% + 2rem));
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
        max-height: 120px;
        margin-bottom: 0;
    }

    to {
        transform: translateX(calc(100% + 2rem));
        opacity: 0;
        max-height: 0;
        margin-bottom: -0.6rem;
    }
}

@keyframes shrink {
    from {
        transform: scaleX(1);
    }

    to {
        transform: scaleX(0);
    }
}