/* File Selector - Metro style */
.file-selector {
    position: relative;
    min-width: 300px;
}

.file-selector-button {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    font-size: var(--font-size-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-selector-button:hover {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-border);
}

.file-selector-button.active {
    border-color: var(--metro-blue);
    border-width: 3px;
}

.file-name {
    flex: 1;
    text-align: left;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-level {
    font-size: var(--font-size-xs);
    color: var(--color-text-primary);
    padding: 4px 8px;
    background-color: var(--color-bg-elevated);
    border-radius: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dropdown-arrow {
    width: 12px;
    height: 12px;
    color: var(--color-text-secondary);
    transition: transform var(--transition-fast);
}

.file-selector-button.active .dropdown-arrow {
    transform: rotate(180deg);
}

.file-selector-dropdown {
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    left: 0;
    right: 0;
    background-color: var(--color-bg-primary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    max-height: 400px;
    overflow-y: auto;
    z-index: var(--z-controls);
}

.file-option {
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    cursor: pointer;
    border-bottom: 2px solid var(--color-border-light);
    transition: background-color var(--transition-fast);
}

.file-option:last-child {
    border-bottom: none;
}

.file-option:hover {
    background-color: var(--color-bg-secondary);
}

.file-option.selected {
    background-color: var(--color-bg-secondary);
    border-left: 4px solid var(--metro-blue);
}

.file-option-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.file-option-name {
    font-size: var(--font-size-md);
    color: var(--color-text-primary);
}

.file-option-id {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    font-family: 'Courier New', monospace;
}

.file-hierarchy-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.hierarchy-icon {
    width: 16px;
    height: 16px;
}

/* Show All Files Option */
.file-option.show-all {
    background-color: var(--color-bg-tertiary);
    font-weight: 500;
}

.file-option.show-all:hover {
    background-color: var(--color-bg-elevated);
}