/* Google Drive Style S3 Studio & Upload Progress Overlay CSS */
.s3-fs {
    position: fixed;
    inset: 64px 12px 12px 12px;
    z-index: 900;
    background-color: var(--md-sys-color-background);
    border-radius: var(--md-radius-xl);
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.s3-fs.view--active { display: flex; }

.s3-fs__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    margin: 10px 0;
    background-color: var(--md-sys-color-surface);
    border-radius: var(--md-radius-xl);
}

.s3-fs__brand { display: flex; align-items: center; gap: 24px; }
.s3-fs__title { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; }
.s3-fs__body { flex: 1; display: flex; gap: 12px; overflow: hidden; padding: 0 12px 12px 0; }

.s3-fs__main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 20px;
    background-color: var(--md-sys-color-surface);
    border-radius: var(--md-radius-xl);
    overflow: hidden;
    position: relative;
}

/* Google Drive Style Bar */
.s3-drive-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    align-content: center;
    height: 38px;
}

.s3-drive-fab-wrapper {position: relative;height: 32px;}
.s3-drive-fab {padding: 0 20px;border-radius: 22px;font-size: 14px;font-weight: 600;}

.s3-fab-menu {
    position: absolute;
    top: 38px;
    left: 0;
    z-index: 100;
    width: 200px;
    background-color: var(--md-sys-color-surface);
    border-radius: var(--md-radius-l);
    box-shadow: var(--md-sys-elevation-3);
    border: 1px solid var(--md-sys-color-outline-variant);
    padding: 6px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.s3-fab-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--md-radius-m);
    font-size: 13px;
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
    cursor: pointer;
    background: transparent;
    border: none;
    width: 100%;
    text-align: left;
    transition: background-color var(--md-transition-fast);
}

.s3-fab-item:hover { background-color: var(--md-sys-color-surface-container-high); }

.s3-drive-search {position: relative;flex: 1;max-width: 420px;height: 100%;}
.s3-drive-search__icon {position: absolute;left: 12px;top: calc(50% - 10px);color: var(--md-sys-color-on-surface-variant);font-size: 20px;pointer-events: none;}
.s3-drive-tools {display: flex;gap: 6px;height: 100%;}
.s3-drive-tools .btn {
    height: auto;
}

/* Floating Selection Bar */
.s3-selection-bar {
    position: absolute;
    top: 72px;
    left: 20px;
    right: 20px;
    z-index: 80;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    border-radius: var(--md-radius-pill);
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    box-shadow: var(--md-sys-elevation-2);
    animation: s3-slide-down var(--md-transition-fast);
}

.s3-selection-bar__count { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 13px; }
.s3-selection-bar__actions { display: flex; align-items: center; gap: 6px; }

@keyframes s3-slide-down {
    from { transform: translateY(-12px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.s3-breadcrumbs {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
    padding: 8px 12px;
    border-radius: var(--md-radius-pill);
    background-color: var(--md-sys-color-surface-container-low);
    font-size: 12px;
}

.s3-crumb {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: var(--md-radius-pill);
    background: transparent;
    color: var(--md-sys-color-primary);
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

.s3-crumb:hover { background-color: var(--md-sys-color-primary-container); }
.s3-crumb--current { color: var(--md-sys-color-on-surface-variant); cursor: default; }
.s3-crumb__sep { color: var(--md-sys-color-on-surface-variant); }

.s3-dropzone {
    position: relative;
    flex: 1;
    min-height: 0;
    border-radius: var(--md-radius-l);
    border: 2px dashed transparent;
    transition: border-color var(--md-transition-fast), background-color var(--md-transition-fast);
    overflow: auto;
}

.s3-dropzone--hot {
    border-color: var(--md-sys-color-primary);
    background-color: var(--md-sys-color-primary-container);
}

.s3-dropzone__hint {
    position: absolute;
    inset: 0;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    color: var(--md-sys-color-on-primary-container);
    pointer-events: none;
}

.s3-dropzone--hot .s3-dropzone__hint { display: flex; }

.s3-files {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
    padding: 4px;
    align-content: start;
}

.s3-files--table { display: block; }

.s3-tile {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px;
    border-radius: var(--md-radius-m);
    background-color: var(--md-sys-color-surface-container-low);
    border: 2px solid transparent;
    cursor: pointer;
    user-select: none;
    transition: background-color var(--md-transition-fast), border-color var(--md-transition-fast);
}

.s3-tile:hover { background-color: var(--md-sys-color-surface-container-high); }
.s3-tile--selected { border-color: var(--md-sys-color-primary); background-color: var(--md-sys-color-primary-container); }

.s3-tile__badge {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--md-sys-elevation-1);
}

.s3-tile__badge .material-symbols-rounded { font-size: 14px; }
.s3-tile--selected .s3-tile__badge { display: flex; }

.s3-tile__thumb {
    height: 84px;
    border-radius: var(--md-radius-s);
    background-color: var(--md-sys-color-surface-container-high);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.s3-tile__thumb .material-symbols-rounded { font-size: 36px; color: var(--md-sys-color-primary); }
.s3-tile__img { width: 100%; height: 100%; object-fit: cover; }

.s3-tile__name {
    font-size: 12px;
    font-weight: 600;
    word-break: break-all;
    line-height: 1.35;
    max-height: 34px;
    overflow: hidden;
}

.s3-tile__meta { font-size: 11px; font-family: var(--md-sys-font-code); color: var(--md-sys-color-on-surface-variant); }

.s3-tile__actions { display: flex; gap: 4px; justify-content: flex-end; }

/* Upload Progress Modal Overlay (> 2MB) */
.upload-overlay {
    position: fixed;
    inset: 0;
    z-index: 1500;
    display: grid;
    place-items: center;
    background-color: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(6px);
    animation: s3-fade-in var(--md-transition-fast);
}

.upload-overlay__card {
    width: min(440px, 92vw);
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 24px;
    border-radius: var(--md-radius-xl);
    background-color: var(--md-sys-color-surface);
    box-shadow: var(--md-sys-elevation-3);
}

.upload-overlay__head { display: flex; align-items: center; gap: 14px; }
.upload-overlay__icon { font-size: 32px; color: var(--md-sys-color-primary); }
.upload-overlay__title-group { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.upload-overlay__title { font-weight: 700; font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.upload-overlay__sub { font-size: 12px; font-family: var(--md-sys-font-code); color: var(--md-sys-color-on-surface-variant); }

.upload-overlay__stats {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    font-family: var(--md-sys-font-code);
    font-weight: 600;
    color: var(--md-sys-color-primary);
}

/* Share Modal Styling */
.share-dialog { display: grid; gap: 14px; }
.share-file-card { display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: var(--md-radius-m); background-color: var(--md-sys-color-surface-container-low); }
.share-file-card__icon { font-size: 28px; color: var(--md-sys-color-primary); }
.share-file-card__meta { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.share-file-card__name { font-weight: 700; font-size: 13px; word-break: break-all; }
.share-file-card__sub { font-size: 11px; font-family: var(--md-sys-font-code); color: var(--md-sys-color-on-surface-variant); }

.share-presets { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.share-preset { cursor: pointer; text-align: center; }
.share-preset input { display: none; }
.share-preset__chip { display: block; padding: 8px 0; border-radius: var(--md-radius-pill); background-color: var(--md-sys-color-surface-container-low); font-size: 12px; font-weight: 600; color: var(--md-sys-color-on-surface-variant); transition: all var(--md-transition-fast); }
.share-preset input:checked + .share-preset__chip { background-color: var(--md-sys-color-primary-container); color: var(--md-sys-color-on-primary-container); }

.share-out-box { display: flex; gap: 8px; }
.share-out-input { font-size: 11px; flex: 1; }

.s3-more { align-self: center; }
.s3-hidden { display: none !important; }

.s3-fs__inspector {
    width: 340px;
    flex-shrink: 0;
    padding: 20px;
    background-color: var(--md-sys-color-surface);
    border-radius: var(--md-radius-xl);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: width var(--md-transition-normal), opacity var(--md-transition-normal);
}

.s3-fs__inspector--collapsed { width: 0; padding: 0; opacity: 0; pointer-events: none; }
.s3-inspector__title { font-size: 15px; font-weight: 700; }
.s3-inspector__body { display: grid; gap: 10px; }
.s3-inspector__empty { font-size: 13px; color: var(--md-sys-color-on-surface-variant); }

.s3-kv {
    display: grid;
    gap: 2px;
    padding: 8px 10px;
    border-radius: var(--md-radius-s);
    background-color: var(--md-sys-color-surface-container-low);
}

.s3-kv__key { font-size: 11px; font-weight: 600; color: var(--md-sys-color-on-surface-variant); }
.s3-kv__val { font-size: 12px; font-family: var(--md-sys-font-code); word-break: break-all; }

@keyframes s3-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@media (max-width: 900px) {
    .s3-fs__inspector { position: absolute; right: 12px; top: 76px; bottom: 12px; z-index: 5; box-shadow: var(--md-sys-elevation-3); }
}