.archive-download-dialog {
    width: min(34rem, calc(100vw - 2rem));
    max-width: calc(100vw - 2rem);
    margin: auto;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    background: var(--bg-surface);
    box-shadow: var(--shadow-dialog);
    overflow: hidden;
}

.archive-download-dialog[open] { display: flex; flex-direction: column; }
.archive-download-dialog::backdrop { background: var(--overlay-backdrop); backdrop-filter: blur(2px); }

.archive-download-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--border-color);
}

.archive-download-symbol {
    display: inline-grid;
    place-items: center;
    width: 3rem;
    height: 3rem;
    flex: 0 0 auto;
    border-radius: var(--radius-lg);
    color: var(--primary-foreground);
    background: var(--primary-subtle);
    font-size: var(--font-size-xl);
}

.archive-download-heading { min-width: 0; }
.archive-download-title { margin: 0; font-size: var(--font-size-lg); line-height: 1.3; }
.archive-download-stage { margin: var(--space-1) 0 0; color: var(--text-secondary); line-height: 1.45; }

.archive-download-body { padding: var(--space-6); }
.archive-download-progress {
    position: relative;
    height: 0.5rem;
    border-radius: var(--radius-full);
    background: var(--bg-active);
    overflow: hidden;
}

.archive-download-progress-bar {
    position: absolute;
    inset-block: 0;
    left: -35%;
    width: 35%;
    border-radius: inherit;
    background: var(--primary);
    animation: archive-download-indeterminate 1.25s ease-in-out infinite;
}

.archive-download-dialog.is-complete .archive-download-progress-bar {
    left: 0;
    width: 100%;
    animation: none;
    background: var(--success);
}

.archive-download-dialog.is-error .archive-download-progress-bar {
    left: 0;
    width: 100%;
    animation: none;
    background: var(--danger);
}

.archive-download-stats {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
    margin-top: var(--space-5);
}

.archive-download-stat {
    min-width: 0;
    padding: var(--space-3);
    border: 1px solid var(--border-color-light);
    border-radius: var(--radius);
    background: var(--bg-subtle);
}

.archive-download-stat-label { display: block; color: var(--text-tertiary); font-size: var(--font-size-xs); }
.archive-download-stat-value { display: block; margin-top: var(--space-1); overflow-wrap: anywhere; font-weight: var(--font-weight-semibold); }

.archive-download-footer {
    display: flex;
    justify-content: flex-end;
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border-color);
}

.archive-download-footer .btn { min-height: 44px; border-radius: var(--radius-full); }
.archive-download-footer .btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

@keyframes archive-download-indeterminate {
    from { transform: translateX(0); }
    to { transform: translateX(390%); }
}

@media (max-width: 480px) {
    .archive-download-header, .archive-download-body { padding: var(--space-5); }
    .archive-download-footer { padding: var(--space-4) var(--space-5); }
    .archive-download-stats { grid-template-columns: 1fr; }
    .archive-download-footer .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    .archive-download-progress-bar {
        left: 0;
        width: 100%;
        animation: none;
        opacity: 0.72;
    }
}