:root { 
    --primary-color: #007bff; --hover-color: #0056b3; --border-color: #dee2e6; 
    --bg-color: #f8f9fa; --text-color: #333; --danger-color: #dc3545; 
    --danger-hover-color: #c82333;
}

.hidden { display: none !important; }

body { 
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; 
    margin: 0; background-color: #f0f2f5; color: var(--text-color); 
}

/* FIX: Main layout wrapper */
.main-content-wrapper {
    display: flex;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

/* FIX: Styles for side panels (Upload/Download) */
.side-panel {
    flex: 1 1 280px;
    padding: 1rem;
    background-color: #e9ecef;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
}
.side-panel h2 {
    margin-top: 0;
    text-align: center;
    color: var(--primary-color);
}

/* FIX: Center file browser panel */
#file-browser-panel {
    flex: 2 1 60%;
    overflow-y: auto;
    padding: 2rem;
}

.login-container {
    background: white; padding: 2rem 3rem; border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,.15); width: 320px; text-align: center;
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
}
.login-container h1 { color: var(--primary-color); margin-bottom: 1.5rem; }
.form-group { margin-bottom: 1rem; text-align: left; }
.form-group label { display: block; margin-bottom: 5px; font-weight: 500; color: #555; }
.form-group input { width: 100%; padding: 10px; border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; }
.login-btn {
    width: 100%; padding: 10px; background-color: var(--primary-color);
    color: white; border: none; border-radius: 4px; font-size: 1rem;
    cursor: pointer; transition: background-color .2s;
}
.login-btn:hover { background-color: #0056b3; }
.error-msg { color: var(--danger-color); margin-top: 1rem; }


.container { 
    max-width: 900px; margin: 0 auto; padding: 0;
    background-color: #fff; border-radius: 8px; 
    box-shadow: 0 4px 6px rgba(0,0,0,0.1); 
    padding: 2rem;
}

.hub-container {
    background: white; padding: 2rem 3rem; border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,.1); text-align: center;
    max-width: 600px; width: 90%;
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
}
.hub-container h1 { color: var(--primary-color); margin-bottom: 2rem; }
.share-list { list-style: none; padding: 0; margin: 0; }
.share-list li { margin: 1rem 0; }
.share-list a {
    display: flex; align-items: center; padding: 1rem; background-color: var(--primary-color);
    color: white; text-decoration: none; border-radius: 5px;
    transition: background-color .2s; font-size: 1.1rem;
}
.share-list a:hover { background-color: var(--hover-color); }
.share-list a svg { vertical-align: middle; margin-right: 12px; width: 24px; height: 24px; stroke-width: 1.5; }

.file-table { width: 100%; border-collapse: collapse; }
.file-table tr.clickable-row:hover { background-color: #f1f1f1; cursor: pointer; }
.file-table tr.selected { background-color: #d8eaff; }
.file-table th, .file-table td { 
    padding: 0.75rem; text-align: left; 
    border-bottom: 1px solid var(--border-color); vertical-align: middle; 
}
.file-table th { background-color: var(--bg-color); }

.file-table th.sortable { cursor: pointer; user-select: none; }
.file-table th.sortable:hover { background-color: #e9ecef; }
.file-table th.sortable::after {
    content: ''; display: inline-block;
    width: 0; height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    margin-left: 8px;
    opacity: 0.4;
}
.file-table th.sort-asc::after { border-bottom: 5px solid #333; }
.file-table th.sort-desc::after { border-top: 5px solid #333; }
.file-table th.sort-asc::after, .file-table th.sort-desc::after { opacity: 1; }

.file-table .type-icon svg { vertical-align: middle; margin-right: 10px; width: 20px; height: 20px; }
.file-table a { text-decoration: none; color: var(--primary-color); word-break: break-all; }
.file-table a:hover { text-decoration: underline; }

.action-cell { text-align: right; white-space: nowrap; }
.action-btn { 
    display: inline-flex; align-items: center; justify-content: center; 
    padding: 5px; width: 32px; height: 32px; border-radius: 5px;
    text-decoration: none !important; border: 1px solid transparent;
    cursor: pointer; margin-left: 5px; 
}
.action-btn svg { width: 16px; height: 16px; }
.download-btn-icon { background-color: var(--primary-color); color: #ffffff !important; }
.download-btn-icon:hover { background-color: var(--hover-color); }
.delete-btn { background-color: var(--danger-color); color: #ffffff !important; }
.delete-btn:hover { background-color: var(--danger-hover-color); }
.action-toolbar { 
    padding: 10px; background-color: var(--bg-color); border: 1px solid var(--border-color); 
    margin-bottom: 1rem; border-radius: 5px; 
}
.action-toolbar button { 
    background-color: var(--primary-color); color: white; border: none;
    padding: 8px 12px; border-radius: 5px; cursor: pointer; margin-right: 10px;
}
.action-toolbar button:hover:not(:disabled) { background-color: var(--hover-color); }
.action-toolbar button:disabled { background-color: #a0a0a0; color: #e0e0e0; cursor: not-allowed; }

#create-folder-btn { background-color: #6c757d; }
#create-folder-btn:hover:not(:disabled) { background-color: #5a6268; }

#delete-selected-btn { background-color: var(--danger-color); }
#delete-selected-btn:hover:not(:disabled) { background-color: var(--danger-hover-color); }

.upload-section { 
    border: 2px dashed var(--border-color); border-radius: 8px; 
    padding: 1.5rem; text-align: center; transition: all 0.2s ease-in-out;
    background-color: #fff;
    margin-bottom: 1rem;
}
.upload-section.dragover { border-color: var(--primary-color); background-color: #f0f8ff; }

.upload-buttons { margin-top: 1rem; }

.upload-btn {
    background-color: var(--primary-color); color: white; border: none;
    padding: 10px 15px; border-radius: 5px; cursor: pointer; margin: 0 5px;
    font-size: 0.95rem;
    transition: background-color 0.2s;
}

.upload-btn:hover { background-color: var(--hover-color); }

/* FIX: Shared styles for upload and download queues */
.task-queue {
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%;
}

.task-queue li {
    background: #fff; border: 1px solid var(--border-color); padding: 8px 12px;
    margin-bottom: 8px; border-radius: 4px;
    font-size: 0.9rem;
}

.file-info {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 5px;
}
.file-name {
    word-break: break-all; padding-right: 10px;
    font-weight: 500;
}
.upload-status { white-space: nowrap; color: #555; font-size: 0.85rem; }
.progress-bar-container {
    height: 6px; width: 100%; background-color: #e9ecef; border-radius: 3px; overflow: hidden;
}
.progress-bar-fill {
    height: 100%; width: 0%; background-color: var(--primary-color);
    transition: width 0.2s ease-in-out, background-color 0.2s;
}

.modal { 
    display: none; position: fixed; z-index: 1000; left: 0; top: 0;
    width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.8); 
}
.modal-content { 
    position: relative; margin: auto; padding: 20px; width: 80%; max-width: 900px;
    top: 50%; transform: translateY(-50%); 
}
.modal-content video, .modal-content img, .modal-content iframe { 
    max-width: 100%; max-height: 80vh; display: block; margin: auto; background: white; 
}
.close { 
    position: absolute; top: 15px; right: 35px; color: #f1f1f1;
    font-size: 40px; font-weight: bold; transition: 0.3s; cursor: pointer; 
}

.path-nav { 
    display: flex; flex-wrap: wrap; align-items: center; margin-bottom: 1rem; 
    font-size: 1.1rem; word-break: break-all; 
}
.path-nav a { margin: 0 0.25rem; }
.path-nav span { margin: 0 0.25rem; }

.hub-button { 
    display: inline-block; padding: 8px 12px; background-color: #6c757d;
    color: white; text-decoration: none; border-radius: 5px; 
    font-size: 0.9rem; margin-right: 15px; 
}
.hub-button:hover { background-color: #5a6268; }

.disk-info { margin-bottom: 2rem; } 
.disk-info p { margin: 0.5rem 0; font-size: 0.9rem; }
.progress-bar { 
    width: 100%; background-color: var(--bg-color); border-radius: 5px;
    overflow: hidden; border: 1px solid var(--border-color); 
}
.progress { 
    height: 20px; background-color: var(--primary-color); text-align: center;
    color: white; line-height: 20px; font-size: 0.8rem;
    transition: width 0.5s ease-in-out; 
}

.overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    z-index: 2000;
    display: flex; justify-content: center; align-items: center;
    color: white; text-align: center;
}

.overlay-content {
    background: #333;
    padding: 2rem 3rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
}

.overlay-content h2 {
    color: var(--danger-color);
    margin-top: 0;
}