.ui-loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(3, 7, 18, 0.56);
    backdrop-filter: blur(3px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1200;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.ui-loading-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.ui-loading-card {
    min-width: 220px;
    max-width: 90vw;
    background: rgba(15, 23, 42, 0.94);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 16px;
    padding: 22px 20px;
    color: #e5eef8;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.32);
}

.ui-loading-spinner {
    width: 26px;
    height: 26px;
    border: 3px solid rgba(148, 163, 184, 0.3);
    border-top-color: #38bdf8;
    border-radius: 50%;
    animation: ui-spin 0.8s linear infinite;
    flex: 0 0 auto;
}

.ui-loading-text {
    font-family: "Trebuchet MS", sans-serif;
    font-size: 0.96rem;
}

.ui-toast-stack {
    position: fixed;
    top: 92px;
    right: 18px;
    z-index: 1250;
    display: grid;
    gap: 10px;
    width: min(360px, calc(100vw - 24px));
}

.ui-toast {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 14px;
    color: #f8fafc;
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.28);
    transform: translateY(-8px);
    opacity: 0;
    animation: ui-toast-in 0.22s ease forwards;
}

.ui-toast.success {
    background: linear-gradient(135deg, rgba(15, 118, 110, 0.98), rgba(22, 163, 74, 0.96));
}

.ui-toast.error {
    background: linear-gradient(135deg, rgba(153, 27, 27, 0.98), rgba(220, 38, 38, 0.96));
}

.ui-toast-icon {
    font-size: 1.05rem;
    line-height: 1.4;
}

.ui-toast-message {
    font-family: "Trebuchet MS", sans-serif;
    font-size: 0.94rem;
    line-height: 1.45;
}

@keyframes ui-spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes ui-toast-in {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@media (max-width: 700px) {
    .ui-toast-stack {
        top: 84px;
        left: 12px;
        right: 12px;
        width: auto;
    }

    .ui-loading-card {
        min-width: 0;
        width: calc(100vw - 28px);
    }
}