/* Navigation Styles */

.nav-category {
    margin-bottom: var(--spacing-xs);
}

.nav-category-header {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
    border-radius: 4px;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-category-header:hover {
    background-color: var(--bg-secondary);
}

.nav-category-icon {
    margin-right: var(--spacing-sm);
    font-size: var(--font-size-base);
}

.nav-category-title {
    flex: 1;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: var(--font-size-xs);
}

.nav-category-arrow {
    font-size: var(--font-size-xs);
    transition: transform var(--transition-base);
    color: var(--text-secondary);
}

.nav-category-arrow.expanded {
    transform: rotate(180deg);
}

.nav-category-items {
    display: flex;
    flex-direction: column;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base), opacity var(--transition-base);
    opacity: 0;
}

.nav-category-items.expanded {
    max-height: 1000px;
    opacity: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm) var(--spacing-2xl);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 4px;
    transition: all var(--transition-fast);
    margin-bottom: 2px;
    position: relative;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: var(--spacing-md);
    width: 4px;
    height: 0;
    background-image: var(--accent-gradient);
    border-radius: 2px;
    transition: height var(--transition-fast);
}

.nav-item:hover {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    padding-left: calc(var(--spacing-2xl) + 4px);
}

.nav-item:hover::before {
    height: 60%;
}

.nav-item.active {
    background-color: var(--primary-surface);
    color: var(--primary-color);
    font-weight: 500;
    padding-left: calc(var(--spacing-2xl) + 4px);
}

.nav-item.active::before {
    height: 100%;
}

.nav-item-icon {
    margin-right: var(--spacing-sm);
    font-size: var(--font-size-base);
    width: 20px;
    text-align: center;
}

.nav-item-text {
    flex: 1;
    font-size: var(--font-size-sm);
}

/* File item styles */
.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: 4px;
    margin-bottom: var(--spacing-sm);
}

.btn-remove {
    background: none;
    border: none;
    color: var(--error-color);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    padding: 0 var(--spacing-sm);
    line-height: 1;
    transition: transform var(--transition-fast);
}

.btn-remove:hover {
    transform: scale(1.2);
}

.result-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: 4px;
    margin-bottom: var(--spacing-sm);
}

.btn-download {
    margin-left: var(--spacing-md);
}