* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--tg-theme-bg-color, #fff);
    color: var(--tg-theme-text-color, #000);
    padding: 12px;
}

#breadcrumb {
    padding: 8px 0;
    font-size: 14px;
    color: var(--tg-theme-hint-color, #999);
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

#breadcrumb span {
    cursor: pointer;
    color: var(--tg-theme-link-color, #2481cc);
}

#breadcrumb span:last-child {
    color: var(--tg-theme-text-color, #000);
    font-weight: 600;
}

#search-bar { margin: 8px 0; }

#search-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--tg-theme-hint-color, #ccc);
    border-radius: 8px;
    background: var(--tg-theme-secondary-bg-color, #f5f5f5);
    color: var(--tg-theme-text-color, #000);
    font-size: 15px;
}

#folder-list { margin: 8px 0; }

.folder-item {
    display: flex;
    align-items: center;
    padding: 12px;
    margin: 4px 0;
    background: var(--tg-theme-secondary-bg-color, #f5f5f5);
    border-radius: 10px;
    cursor: pointer;
    transition: opacity 0.15s;
}

.folder-item:active { opacity: 0.7; }

.folder-item .icon { font-size: 20px; margin-right: 10px; }
.folder-item .name { font-size: 15px; flex: 1; }
.folder-item .arrow { color: var(--tg-theme-hint-color, #999); }

#upload-section {
    margin: 16px 0;
    text-align: center;
}

#upload-btn {
    width: 100%;
    padding: 14px;
    background: var(--tg-theme-button-color, #2481cc);
    color: var(--tg-theme-button-text-color, #fff);
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 8px;
}

#file-input { margin: 8px 0; }

#progress { margin: 12px 0; text-align: center; }

#progress-bar {
    width: 100%;
    height: 6px;
    background: var(--tg-theme-secondary-bg-color, #eee);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 6px;
}

#progress-fill {
    height: 100%;
    width: 0;
    background: var(--tg-theme-button-color, #2481cc);
    transition: width 0.3s;
}

#progress-text { font-size: 13px; color: var(--tg-theme-hint-color, #999); }

#status {
    margin: 12px 0;
    text-align: center;
    font-size: 14px;
}

.status-ok { color: #4caf50; }
.status-err { color: #f44336; }

#file-list { margin: 8px 0; }

.file-section-title {
    font-size: 13px;
    color: var(--tg-theme-hint-color, #999);
    padding: 8px 4px 4px;
    font-weight: 600;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    margin: 4px 0;
    background: var(--tg-theme-secondary-bg-color, #f5f5f5);
    border-radius: 10px;
    cursor: pointer;
    transition: opacity 0.15s;
}

.file-item:active { opacity: 0.7; }

.file-item .icon { font-size: 20px; margin-right: 10px; flex-shrink: 0; }
.file-item .file-info { flex: 1; min-width: 0; }
.file-item .file-name { font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-item .file-size { font-size: 12px; color: var(--tg-theme-hint-color, #999); }
.file-item .download-icon { color: var(--tg-theme-link-color, #2481cc); font-size: 16px; flex-shrink: 0; }